Data Provider Groups | Data Provider Elements
Astrogator Pass Data
Calc Object values at the end of each pass break. Each Calc Object contained in the Component Browser is available for use, including user defined Calc Objects. The Calc Objects listed here are representative.Available for these objects: Satellite
Type: Time-varying data. Intended to be used only with elements from this same data provider.
Availability: Reports | Graphs | Dynamic Displays | Strip Charts
Data Provider Groups
Name | Description |
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Top | Time measures. |
Access | An Access calculation object that computes access between two objects. |
Cartesian Elems | Calc Objects for the ephemeris of the object, expressed in Cartesian components. Each Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Cartesian STM | The 6x6 State Transition Matrix (STM) for the Cartesian position and velocity. The STM describes the effect of position-velocity perturbations made at the start of propagation on the position-velocity state at the reported time. The coordinate system is a property of the calc objects. Updated data is generated only for segments with a propagator that has a State Transition Matrix propagator function. |
Constants | Constant values used in astrodynamic calculations. |
Delaunay Elems | A set of canonical angle-action variables commonly used in general perturbation theories. An orbit is defined by a set of conjugate angle-action pairs. |
Environment | Calc Objects for the satellite environment. |
Equinoctial Elems | Calc Objects for the ephemeris of the object, expressed in equinoctial elements. Each Calc Object allows a choice of element type (Osculating elements, Kozai-Izsak Mean elements, Brouwer-Lyddane Mean elements using only short period terms, and Brouwer-Lyddane Mean elements using both short and long period terms). The default is osculating. Each Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Formation | Calc Objects for relative motion and close approaches with respect to the master satellite or a specified vehicle. See also Relative Motion. The close approach X axis is the unit vector in the direction of the cross product of the relative velocity vector with the orbit momentum vector of the reference vehicle. The close approach Y axis is the unit vector in the direction of the cross product of the X axis and the relative velocity vector. The close approach plane is the plane spanned by the X and Y axes. The close approach vector is the relative position vector from the reference vehicle. |
GeoStationary | Calc Objects that are useful for station keeping of geostationary satellites. Each Calc Object allows a choice of a central body. The default is Earth. |
Geodetic | Calc Objects for the ephemeris of the object, expressed in LLA elements. Each Calc Object allows a choice of a central body. The default is Earth. |
Ground Track | Calc Objects for maintaining a repeating ground track. |
Keplerian Elems | Calc Objects for the ephemeris of the object, expressed in keplerian (i.e., instantaneous two-body) elements. Each Calc Object allows a choice of element type (Osculating elements, Kozai-Izsak Mean elements, Brouwer-Lyddane Mean elements using only short period terms, and Brouwer-Lyddane Mean elements using both short and long period terms). The default is osculating. |
Maneuver | Maneuver related Calc Objects. |
Math | Used to perform functions on other Calc Objects. |
Mean Elems | Calc Objects for the ephemeris of the object, expressed in Keplerian elements. Each Calc Object allows a choice of element type (Osculating elements, Kozai-Izsak Mean elements, Brouwer-Lyddane Mean elements using only short period terms, and Brouwer-Lyddane Mean elements using both short and long period terms). The default is Kozai-Izsak mean elements. The mean elements are computed using mean element theory (not simply a numerical average of the element over a period), considering only gravity perturbations (J2 and for some theories J3 through J5). |
MultiBody | Used for targeting a different central body. See also B-plane targeting under Astrogator help. |
Other Orbit | Miscellaneous Calc Objects. |
Power | Calc Objects that compute power. |
Relative Motion | Calc Objects for relative ephemeris. The relative ephemeris is computed with respect to two rotating frames, the RIC (Radial, In-Track, Cross-Track) frame and the NTC (Normal, Tangential, and Cross-Track) frames, that are defined using the primary's ephemeris. Cross-track refers to the direction perpendicular to the position and inertial velocity; in-track refers to the direction perpendicular to both the radial and cross-track (positive in the direction of motion); tangential refers to the direction along the velocity vector; and normal refers to the direction perpendicular to the velocity and cross-track directions (positive outward along radial). Each Calc Object allows a choice of a central body. The default is Earth. See Also Formation. |
SEET | Calc Objects utilizing computations provided by SEET. |
STM Eigenvalues | The eigenvalues of the 6x6 cartesian State Transition Matrix (STM). The STM describes the effect of position-velocity perturbations made at the start of propagation on the position-velocity state at the reported time. The coordinate system is a property of the calc objects. Updated data is generated only for segments with a propagator that has a State Transition Matrix propagator function. When accessing after the MCS has been run, the eigenvalues are sorted for consistency between ephemeris points. When accessing during an MCS run, the eigenvalues are sorted by absolute value of the real part. |
STM Eigenvectors | The eigenvectors of the 6x6 cartesian State Transition Matrix (STM). The STM describes the effect of position-velocity perturbations made at the start of propagation on the position-velocity state at the reported time. The coordinate system is a property of the calc objects. Updated data is generated only for segments with a propagator that has a State Transition Matrix propagator function. When accessing after the MCS has been run, the eigenvalues are sorted for consistency between ephemeris points. When accessing during an MCS run, the eigenvalues are sorted by absolute value of the real part. The first eigenvector then corresponds to the first eigenvalue, etc. |
Scalar | Scalar calculation component. |
Scripts | Values from Astrogator plugin scripts. |
Spacecraft Properties | Calc objects for spacecraft properties. |
Spherical Elems | Calc Objects for the ephemeris of the object, expressed in spherical elements. |
Target Vector | Data for incoming and outgoing asymptotes as well as C3 energy. |
Time | Time related Calc Objects. |
UserValues | User Variable related Calc Objects. |
Vector | Vector-related Calc Objects. |
Segment Data | Properties of each MCS segment in the Astrogator satellite. |
Data Provider Elements
Top | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Epoch | Date | Real Number or Text | The reference epoch for the object. |
Access | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Access | Unitless | Real Number | Indicates whether there is access between two objects. 1 = access, and 0 = no access. |
Cartesian Elems | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Vx | Rate | Real Number | X Cartesian component of velocity. |
Vy | Rate | Real Number | Y Cartesian component of velocity. |
Vz | Rate | Real Number | Z Cartesian component of velocity. |
X | Distance | Real Number | The X component of the position vector in the coordinate system specified by this Calc Object. |
Y | Distance | Real Number | The Y component of the position vector in the coordinate system specified by this Calc Object. |
Z | Distance | Real Number | The Z component of the position vector in the coordinate system specified by this Calc Object. |
Cartesian STM | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
STMPosXPosX | Unitless | Real Number | State transition function: delta(PosX,tf) = [this value] * delta(PosX,ti). |
STMPosXPosY | Unitless | Real Number | State transition function: delta(PosX,tf) = [this value] * delta(PosY,ti). |
STMPosXPosZ | Unitless | Real Number | State transition function: delta(PosX,tf) = [this value] * delta(PosZ,ti). |
STMPosXVelX | Unitless | Real Number | State transition function: delta(PosX,tf) = [this value] * delta(VelX,ti). |
STMPosXVelY | Unitless | Real Number | State transition function: delta(PosX,tf) = [this value] * delta(VelY,ti). |
STMPosXVelZ | Unitless | Real Number | State transition function: delta(PosX,tf) = [this value] * delta(VelZ,ti). |
STMPosYPosX | Unitless | Real Number | State transition function: delta(PosY,tf) = [this value] * delta(PosX,ti). |
STMPosYPosY | Unitless | Real Number | State transition function: delta(PosY,tf) = [this value] * delta(PosY,ti). |
STMPosYPosZ | Unitless | Real Number | State transition function: delta(PosY,tf) = [this value] * delta(PosZ,ti). |
STMPosYVelX | Unitless | Real Number | State transition function: delta(PosY,tf) = [this value] * delta(VelX,ti). |
STMPosYVelY | Unitless | Real Number | State transition function: delta(PosY,tf) = [this value] * delta(VelY,ti). |
STMPosYVelZ | Unitless | Real Number | State transition function: delta(PosY,tf) = [this value] * delta(VelZ,ti). |
STMPosZPosX | Unitless | Real Number | State transition function: delta(PosZ,tf) = [this value] * delta(PosX,ti). |
STMPosZPosY | Unitless | Real Number | State transition function: delta(PosZ,tf) = [this value] * delta(PosY,ti). |
STMPosZPosZ | Unitless | Real Number | State transition function: delta(PosZ,tf) = [this value] * delta(PosZ,ti). |
STMPosZVelX | Unitless | Real Number | State transition function: delta(PosZ,tf) = [this value] * delta(VelX,ti). |
STMPosZVelY | Unitless | Real Number | State transition function: delta(PosZ,tf) = [this value] * delta(VelY,ti). |
STMPosZVelZ | Unitless | Real Number | State transition function: delta(PosZ,tf) = [this value] * delta(VelZ,ti). |
STMVelXPosX | Unitless | Real Number | State transition function: delta(VelX,tf) = [this value] * delta(PosX,ti). |
STMVelXPosY | Unitless | Real Number | State transition function: delta(VelX,tf) = [this value] * delta(PosY,ti). |
STMVelXPosZ | Unitless | Real Number | State transition function: delta(VelX,tf) = [this value] * delta(PosZ,ti). |
STMVelXVelX | Unitless | Real Number | State transition function: delta(VelX,tf) = [this value] * delta(VelX,ti). |
STMVelXVelY | Unitless | Real Number | State transition function: delta(VelX,tf) = [this value] * delta(VelY,ti). |
STMVelXVelZ | Unitless | Real Number | State transition function: delta(VelX,tf) = [this value] * delta(VelZ,ti). |
STMVelYPosX | Unitless | Real Number | State transition function: delta(VelY,tf) = [this value] * delta(PosX,ti). |
STMVelYPosY | Unitless | Real Number | State transition function: delta(VelY,tf) = [this value] * delta(PosY,ti). |
STMVelYPosZ | Unitless | Real Number | State transition function: delta(VelY,tf) = [this value] * delta(PosZ,ti). |
STMVelYVelX | Unitless | Real Number | State transition function: delta(VelY,tf) = [this value] * delta(VelX,ti). |
STMVelYVelY | Unitless | Real Number | State transition function: delta(VelY,tf) = [this value] * delta(VelY,ti). |
STMVelYVelZ | Unitless | Real Number | State transition function: delta(VelY,tf) = [this value] * delta(VelZ,ti). |
STMVelZPosX | Unitless | Real Number | State transition function: delta(VelZ,tf) = [this value] * delta(PosX,ti). |
STMVelZPosY | Unitless | Real Number | State transition function: delta(VelZ,tf) = [this value] * delta(PosY,ti). |
STMVelZPosZ | Unitless | Real Number | State transition function: delta(VelZ,tf) = [this value] * delta(PosZ,ti). |
STMVelZVelX | Unitless | Real Number | State transition function: delta(VelZ,tf) = [this value] * delta(VelX,ti). |
STMVelZVelY | Unitless | Real Number | State transition function: delta(VelZ,tf) = [this value] * delta(VelY,ti). |
STMVelZVelZ | Unitless | Real Number | State transition function: delta(VelZ,tf) = [this value] * delta(VelZ,ti). |
Constants | |||
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Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Gravitational_Parameter | Grav Parameter | Real Number | Gravitational Parameter of a central body. |
Gravity_Coefficient | Unitless | Real Number | Coefficient value of a gravity field. |
Pi | Unitless | Real Number | The common mathematical constant consistent with the ratio of a circle's circumference to its diameter. |
Reference_Radius | Distance | Real Number | Reference radius of a central body. |
Speed_of_Light | Rate | Real Number | Light speed. |
Delaunay Elems | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Delaunay_G | Area Rate | Real Number | The magnitude of the orbital angular momentum: sqrt (GM * p). |
Delaunay_H | Area Rate | Real Number | The Z component of the orbital angular momentum: G cos(inc). |
Delaunay_L | Area Rate | Real Number | sqrt (GM * a). |
Semi-latus_Rectum | Distance | Real Number | The distance from focus to orbit at true anomaly of 90 degrees. |
Environment | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
AtmosDensity | Density | Real Number | The density of the atmosphere. The default is the US Standard Atmosphere, though other models are available. |
AtmosPressure | Pressure | Real Number | The pressure of the atmosphere. The default is the US Standard Atmosphere, though other models are available. Some density models do not compute the pressure, in which case an error condition is returned. |
AtmosTemperature | Temperature | Real Number | The temperature of the atmosphere. The default is the US Standard Atmosphere, though other models are available. Some density models do not compute the temperature, in which case an error condition is returned. |
Equinoctial Elems | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Equinoctial_h | Unitless | Real Number | h = eccentricity * sin(right_ascension_of_the_ascending_node + argument_of_periapse). Equinoctial elements h and k together describe the shape of the orbit and the location of the periapse. |
Equinoctial_k | Unitless | Real Number | k = eccentricity * cos(right_ascension_of_the_ascending_node + argument_of_periapse). Equinoctial elements h and k together describe the shape of the orbit and the location of the periapse. |
Equinoctial_p | Unitless | Real Number | p = tan(inclination/2) * sin(right_ascension_of_the_ascending_node). Equinoctial elements p and q together describe the orientation of the orbit plane. Retrograde orbits have a singularity at zero inclination, and posigrade orbits have a singularity at 180 deg inclination. |
Equinoctial_q | Unitless | Real Number | q = tan(inclination/2) * cos(right_ascension_of_the_ascending_node). Equinoctial elements p and q together describe the orientation of the orbit plane. Retrograde orbits have a singularity at zero inclination, and posigrade orbits have a singularity at 180 deg inclination. |
Mean_Longitude | Angle | Real Number or Text | mean longitude is the sum: right_ascension_of_the_ascending_node + argument_of_periapse + mean_anomaly. A measure of the location within the orbit. |
Formation | |||
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Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
CloseApproachBearing | Angle | Real Number or Text | The angle from the relative velocity vector to the reference vehicle. The Calc Object allows a choice of a central body. The default is Earth. |
CloseApproachMagnitude | Distance | Real Number | The magnitude of close approach vector. The value is sqrt(x^2 + y^2). The Calc Object allows a choice of a central body. The default is Earth. |
CloseApproachTheta | Angle | Real Number or Text | The angle from X to close approach vector. The Calc Object allows a choice of a central body. The default is Earth. |
CloseApproachX | Distance | Real Number | The X component of close approach vector. The Calc Object allows a choice of a central body. The default is Earth. |
CloseApproachY | Distance | Real Number | The Y component of close approach vector. The Calc Object allows a choice of a central body. The default is Earth. |
CosineOfCloseApproachBearing | Unitless | Real Number | The cosine of the close approach bearing. The Calc Object allows a choice of a central body. The default is Earth. |
Rel_Mean_Arg_of_Lat | Angle | Real Number or Text | The relative mean argument of latitude compared to the reference vehicle. |
Rel_Mean_Arg_of_Perigee | Angle | Real Number or Text | The relative mean argument of perigee compared to the reference vehicle. |
Rel_Mean_Eccentricity | Unitless | Real Number | The relative mean eccentricity compared to the reference vehicle. |
Rel_Mean_Inclination | Angle | Real Number or Text | The relative mean inclination compared to the reference vehicle. |
Rel_Mean_Mean_Anomaly | Angle | Real Number or Text | The relative mean mean anomaly compared to the reference vehicle. |
Rel_Mean_Period | Time | Real Number | The relative mean orbit period compared to the reference vehicle. |
Rel_Mean_RAAN | Angle | Real Number or Text | The relative mean RAAN compared to the reference vehicle. |
Rel_Mean_Semimajor_Axis | Distance | Real Number | The relative mean semimajor axis compared to the reference vehicle. |
RelativeAtAOL | Time | Real Number | The relative value (i.e., difference between the value computed for this satellite and the reference vehicle) of a specified calculation object. The value for the satellite is computed at the current state; the value for the reference is computed at either the previous or next state where the reference vehicle's argument of latitude is the same as the satellite's current value. |
RelativeValue | Time | Real Number | The relative value (i.e., difference between the value computed for this satellite and the reference vehicle) of a specified calculation object. Both values are computed at the given epoch. |
RelGroundTrackError | Distance | Real Number | Ground track error compared to the reference vehicle. The value for the satellite is computed at the current state; the value for the reference is computed at either the previous or next state where the reference vehicle's argument of latitude is the same as the satellite's current value. The ground track error can be unsigned or signed based on RxV. |
GeoStationary | |||
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Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Longitude_Drift_Rate | AngleRate | Real Number | The difference between the mean orbital rate and the central body rotation rate. The Calc Object allows a choice of element type (Osculating elements, Kozai-Izsak Mean elements, Brouwer-Lyddane Mean elements using only short period terms, and Brouwer-Lyddane Mean elements using both short and long period terms). The default is osculating. The mean orbital rate is computing using the element type and accounting for the effects of J2 of the central body. |
Mean_Earth_Longitude | Angle | Real Number or Text | Mean longitude, computed in the True Of Date coordinate system, minus the Greenwich hour angle. This Calc Object is only valid for the Earth central body. |
RectifiedLongitude | Angle | Real Number or Text | Two-body rectified longitude with respect to central body. The rectified motion moves nearly uniformally in true anomaly. The value is computed by first determining the two-body orbital elements, re-assigning the true anomaly value to the value of the mean anomaly, computing the cartesian position using these modified elements, and then computing the corresponding longitude from that position. |
Geodetic | |||
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Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Altitude | Distance | Real Number | The altitude value (i.e., magnitude of the relative position vector between the object and its detic subpoint). |
AltitudeRate | Rate | Real Number | The rate of change of altitude. |
Height_above_terrain | Distance | Real Number | The height above the terrain. |
Latitude | Angle | Real Number or Text | The detic latitude (i.e., angle between the detic subpoint's surface normal vector and the XY plane). |
LatitudeRate | AngleRate | Real Number | The rate of change of the detic latitude. |
Longitude | Angle | Real Number or Text | The detic longitude (i.e., angle from the X-axis locating the projection of the detic subpoint's surface normal vector onto the XY plane.) Longitude increases in the direction found using the right-hand rule about the Z-axis. |
LongitudeRate | AngleRate | Real Number | The rate of change of the detic longitude. |
Ground Track | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
RepeatingGroundTrackEquatorError | Distance | Real Number | The difference between the current longitude and the nearest grid point longitude computed as point of an orbit with the specified repeat count and reference longitude. This Calc Object should only be evaluated at an XY plane crossing. The reference longitude can range from -360 to 360 deg. The repeat count gives the number of orbits before the ground track repeats over the same longitude. The Calc Object allows a choice of a central body. The default is Earth. |
Keplerian Elems | |||
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Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Altitude_Of_Apoapsis | Distance | Real Number | The difference between the radius of apoapsis and the central body's equatorial radius. The Calc Object allows a choice of a central body. The default is Earth. |
Altitude_Of_Periapsis | Distance | Real Number | The difference between the radius of apoapsis and the central body's equatorial radius. The Calc Object allows a choice of a central body. The default is Earth. |
Argument_of_Latitude | Angle | Real Number or Text | The sum of the argument of periapsis and true anomaly. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Argument_of_Periapsis | Angle | Real Number or Text | The angle from the ascending node to the periapsis vector measured in the orbit plane in the direction of the object's motion. The periapsis vector locates the closest point of the orbit. For a circular orbit, the value is defined to be zero (i.e., periapsis at the ascending node). The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Eccentric_Anomaly | Angle | Real Number or Text | An angle used for converting between true and mean anomaly. Has a geometrical definition as the angle between the line of apsides and a line running from the center of the ellipse to a point Q on a circle circumscribed about the ellipse. The point Q is a projection of the satellite along a line parallel to the minor axis of the ellipse. The Calc Object allows a choice of a central body. The default is Earth. |
Eccentricity | Unitless | Real Number | A measure of the shape of the orbit. Values <1 indicate an ellipse (where zero is a circular orbit) and values >1 indicate a hyperbola. |
Inclination | Angle | Real Number or Text | The angle between the orbit plane and the XY plane of the coordinate system. |
Longitude_Of_Ascending_Node | Angle | Real Number or Text | A measure of the right ascension of the ascending node, made in the Fixed frame. The value is the detic longitude of the orbit's ascending node. The ascending node crossing is assumed to be at, or prior to, the current position in the orbit in the same nodal revolution. The Calc Object allows a choice of a central body. The default is Earth. |
Mean_Motion | AngleRate | Real Number | A measure of the osculating period of the orbit, expressed as an angular rate. The value is 2pi rad / orbit_period. The Calc Object allows a choice of a central body. The default is Earth. |
MeanAnomaly | Angle | Real Number or Text | A measure of the time past periapsis passing, expressed as an angle. The Calc Object allows a choice of a central body. The default is Earth. |
Orbit_Period | Time | Real Number | Time required for a complete revolution as computed from osculating semi-major axis length. The Calc Object allows a choice of a central body. The default is Earth. |
RAAN | Angle | Real Number or Text | The angle in the XY plane from the X axis to the ascending node, measured in a right-handed sense about the Z axis. in the equatorial plane. For equatorial orbits, the ascending node is defined to be directed along the positive X axis, and thus the value is 0.0. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Radius_Of_Apoapsis | Distance | Real Number | The magnitude of the apoapsis vector. The apoapsis vector (defined only when the eccentricity is <1) locates the position in the orbit furthest from the central body. The Calc Object allows a choice of a central body. The default is Earth. |
Radius_Of_Periapsis | Distance | Real Number | The magnitude of the periapsis vector. The periapsis vector locates the position in the orbit closest to the central body. The Calc Object allows a choice of a central body. The default is Earth. |
Semimajor_Axis | Distance | Real Number | A measure of the size of the orbit. Orbits with eccentricity less than 1 are ellipses, with major and minor axes identifying the symmetry axes of the ellipse, the major axis being the longer one. The value is half the length of the major axis. The Calc Object allows a choice of a central body. The default is Earth. |
Time_Past_Asc_Node | Time | Real Number | The elapsed time since passing the last ascending node crossing based on assumed two-body motion.. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Time_Past_Periapsis | Time | Real Number | The elapsed time since passing the last periapsis crossing based on assumed two-body motion. The Calc Object allows a choice of a central body. The default is Earth. |
True_Anomaly | Angle | Real Number or Text | The angle from the periapsis vector, measured in the orbit plane in the direction of motion, to the position vector. The Calc Object allows a choice of a central body. The default is Earth. |
Maneuver | |||
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Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
DeltaV | Rate | Real Number | Delta-V magnitude integrated along the trajectory path. |
DeltaV_Squared | Speed Change Squared | Real Number | Square of DeltaV integrated along path. |
Fuel_Density | SmallDensity | Real Number | Density of the fuel. |
Fuel_Used | Mass | Real Number | Fuel used since the initial state of the spacecraft. |
FuelMass | Mass | Real Number | Fuel mass remaining. |
Inertial_DeltaV_Magnitude | Rate | Real Number | The magnitude of accumulated Delta-V integrated in inertial coordinates. Computed by integrating the thrust acceleration over time. |
Inertial_DeltaVx | Rate | Real Number | The X component of accumulated Delta-V integrated in inertial coordinates. |
Inertial_DeltaVy | Rate | Real Number | The Y component of accumulated Delta-V integrated in inertial coordinates. |
Inertial_DeltaVz | Rate | Real Number | The Z component of accumulated Delta-V integrated in inertial coordinates. |
MCS_DeltaV | Speed Change | Real Number | Sum of DeltaV magnitude for all maneuvers in MCS. |
MCS_DeltaV_Squared | Speed Change Squared | Real Number | Sum of squares of DeltaV magnitude for all maneuvers in MCS. |
Specific_Impulse | SpecificImpulse | Real Number | The specific impulse during the maneuver, accounting for all engines, computed using the rocket equation. |
Tank_Pressure | Pressure | Real Number | Fuel tank pressure. |
Tank_Temperature | Temperature | Real Number | Fuel tank temperature. |
Thrust_Vector_X | Force | Real Number | The X component of the total thrust vector. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Thrust_Vector_Y | Force | Real Number | The Y component of the total thrust vector. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Thrust_Vector_Z | Force | Real Number | The Z component of the total thrust vector. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Total_Mass | Mass | Real Number | Total mass (fuel plus dry mass). |
Total_Mass_Flow_Rate | Mass Per Time | Real Number | The total mass flow rate, accounting for all engines, during a maneuver. |
Math | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Absolute_Value | Date | Real Number or Text | The absolute value of a specified calculation object. |
Difference | Time | Real Number | The difference of a specified calculation object. Difference is from the initial value. |
Negative | Date | Real Number or Text | The negative of a specified calculation object. |
Mean Elems | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Mean_Argument_of_Latitude | Angle | Real Number or Text | The sum of the argument of periapsis and true anomaly, where the angles are computed using Kozai-Izsak mean elements. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Mean_Argument_of_Perigee | Angle | Real Number or Text | The angle from the ascending node to the periapsis vector measured in the orbit plane in the direction of the object's motion. The periapsis vector locates the closest point of the orbit. For a circular orbit, the value is defined to be zero (i.e., periapsis at the ascending node). The ascending node and periapsis vector are computed using Kozai-Izsak mean elements. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Mean_Eccentricity | Unitless | Real Number | A measure of the shape of the orbit. Values <1 indicate an ellipse (where zero is a circular orbit) and values >1 indicate a hyperbola. The value is computed using Kozai-Izsak mean elements. The Calc Object allows a choice of a central body. The default is Earth. |
Mean_Inclination | Angle | Real Number or Text | The angle between the orbit plane and the XY plane of the coordinate system, where the orbit angular momentum vector is perpendicular to the orbit plane. The orbit angular momentum vector is computed using Kozai-Izsak mean elements. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Mean_Mean_Anomaly | Angle | Real Number or Text | A measure of the time past periapsis passing, expressed as an angle. The periapsis direction is computed using Kozai-Izsak mean elements. The Calc Object allows a choice of a central body. The default is Earth. |
Mean_Orbit_Period | Time | Real Number | Time required for a complete revolution as computed from the mean semi-major axis length, computed using Kozai-Izsak mean elements. The Calc Object allows a choice of a central body. The default is Earth. |
Mean_RAAN | Angle | Real Number or Text | The angle in the XY plane from the X axis to the ascending node, measured in a right-handed sense about the Z axis. in the equatorial plane. For equatorial orbits, the ascending node is defined to be directed along the positive X axis, and thus the value is 0.0. The ascending node vector is computed using Kozai-Izsak mean elements. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Mean_Semimajor_Axis | Distance | Real Number | A measure of the size of the orbit. Orbits with eccentricity <1 are ellipses, with major and minor axes identifying the symmetry axes of the ellipse, the major axis being the longer one. The value is half the length of the major axis. The value is computed using Kozai-Izsak mean elements. The Calc Object allows a choice of a central body. The default is Earth. |
Mean_True_Anomaly | Angle | Real Number or Text | The angle from the periapsis vector, measured in the orbit plane in the direction of motion, to the position vector. The periapsis vector and position vector are computed using Kozai-Izsak mean elements. The Calc Object allows a choice of a central body. The default is Earth. |
MultiBody | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
BDotR | Distance | Real Number | Dot product of B-Plane vectors B and R. B-vector is defined as the intersection of the B-plane and the trajectory plane, starting on the targeted central body and ending at the spot where the incoming asymptote crosses the B-plane. R is one of the axes of the B-plane. |
BDotT | Distance | Real Number | Dot product of B-Plane vectors B and T. B-vector is defined as the intersection of the B-plane and the trajectory plane, starting on the targeted central body and ending at the spot where the incoming asymptote crosses the B-plane. T is one of the axes of the B-plane. |
BMagnitude | Distance | Real Number | Magnitude of the B-plane B-vector. B-vector is defined as the intersection of the B-plane and the trajectory plane, starting on the targeted central body and ending at the spot where the incoming asymptote crosses the B-plane. |
BTheta | Angle | Real Number or Text | B-Plane theta angle is the angle between the B-vector and the T-axis of the B-plane. |
Delta_Declination | Angle | Real Number or Text | Delta Declination is the difference between the declination of the target body and that of the satellite with respect to the target body's parent body. |
Delta_Right_Asc | Angle | Real Number or Text | Delta Right Ascension is the difference between the right ascension of the target body and that of the satellite. The right ascension is measured with respect to the target body's parent body, in the parent body's inertial coordinate system. |
JacobiConstant | Unitless | Real Number | The single integral of the motion of the circular restricted three-body problem. Requires a valid Astrogator CR3BP propagated ephemeris for correct evaluation. |
Other Orbit | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Apparent_Solar_Time | Angle | Real Number or Text | Apparent solar time expressed as an angle. The Calc Object allows a choice of a central body. The default is Earth. |
Beta_Angle | Angle | Real Number or Text | The angle between the orbit plane and the apparent sun direction. The Calc Object allows a choice of a central body. The default is Earth. |
Earth_Mean_Local_Time_of_Ascending_Node | Angle | Real Number or Text | The Mean Solar (Local) Time of the instantaneously evaluated ascending node. The ascending node is computed by converting the osculating right ascension of the ascending nodes to its equivalent longitude of ascending node. This value is then used to compute the associated instantaneous Mean Solar Time. The resulting evolution is a slowly varying smooth function between the nodes that matches the Mean Solar Time at the ascending node. The value is computed as an angle with units of degrees by default with 0/360 degrees being directly opposite the Mean Sun in shadow and 180 degrees aligned with the Mean Sun in light. Units of HMS for the angle are also available. |
Earth_Mean_Solar_Time | Angle | Real Number or Text | Apparent solar time modified for earth's equation of time, expressed as an angle. The Calc Object allows a choice of a central body. The default is Earth. |
Local_Apparent_Solar_Longitude | Angle | Real Number or Text | Apparent solar longitude minus vehicle longitude. The Calc Object allows a choice of a central body. The default is Earth. |
Longitude_of_Periapsis | Angle | Real Number or Text | The sum of the right ascension of the ascending node and the argument of periapsis. The Calc Object allows a choice of element type (Osculating elements, Kozai-Izsak Mean elements, Brouwer-Lyddane Mean elements using only short period terms, and Brouwer-Lyddane Mean elements using both short and long period terms). The default is osculating. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Orbit_State_Value | Date | Real Number or Text | Computes the value of the specified Calc Object given the specified input values of position and velocity. |
SignedEccentricity | Unitless | Real Number | The eccentricity multiplied by either 1.0 or -1.0. The value is positive if the mean anomaly is within pi/2 radians of the periapsis, else it is negative. The Calc Object allows a choice of element type (Osculating elements, Kozai-Izsak Mean elements, Brouwer-Lyddane Mean elements using only short period terms, and Brouwer-Lyddane Mean elements using both short and long period terms). The default is osculating. |
SignedInclination | Angle | Real Number or Text | The inclination multiplied by either 1.0 or -1.0. The value is positive if the argument of latitude is within pi/2 radians of the ascending node, else it is negative. The Calc Object allows a choice of element type (Osculating elements, Kozai-Izsak Mean elements, Brouwer-Lyddane Mean elements using only short period terms, and Brouwer-Lyddane Mean elements using both short and long period terms). The default is osculating. |
True_Longitude | Angle | Real Number or Text | The sum of the right ascension of the ascending node, the argument of periapsis, and the true anomaly. The Calc Object allows a choice of element type (Osculating elements, Kozai-Izsak Mean elements, Brouwer-Lyddane Mean elements using only short period terms, and Brouwer-Lyddane Mean elements using both short and long period terms). The default is osculating. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Power | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Power | Power | Real Number | The power generated by a power source. The source can be solar panels, internal, or processed. |
Relative Motion | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
CrossTrack | Distance | Real Number | The cross-track component of the relative position vector. |
CrossTrackRate | Rate | Real Number | The cross-track component of the relative velocity vector as observed in the RIC rotating frame. |
InTrack | Distance | Real Number | The in-track component of the relative position vector. |
InTrackRate | Rate | Real Number | The in-track component of the relative velocity vector as observed in the RIC rotating frame. |
Normal | Distance | Real Number | The normal component of the relative position vector. |
NormalRate | Rate | Real Number | The normal component of the relative velocity vector as observed in the NTC rotating frame. |
Radial | Distance | Real Number | The radial component of the relative position vector. |
RadialRate | Rate | Real Number | The radial component of the relative velocity vector as observed in the RIC rotating frame. |
Range | Distance | Real Number | The range (i.e., distance between the primary and secondary object) at the given time. |
RangeRate | Rate | Real Number | The rate of change of the magnitude of the relative position vector. |
RICAzimuth | Angle | Real Number or Text | The angle measured in the plane formed by the in-track and cross-track directions, positive from the In-Track direction toward the Cross-Track direction. |
RICAzimuthRate | AngleRate | Real Number | The rate of change of the RIC azimuth. |
RICElevation | Angle | Real Number or Text | The angle measured perpendicular to the plane formed by the in-track and cross-track directions, positive toward the Radial direction. |
RICElevationRate | AngleRate | Real Number | The rate of change of the RIC elevation. |
Tangential | Distance | Real Number | The tangential component of the relative position vector. |
TangentialRate | Rate | Real Number | The tangential component of the relative velocity vector as observed in the NTC rotating frame. |
TimeDifference | Time | Real Number | Alternative measure for in-track position difference, computed as duration. The duration is computed by dividing the in-track component of the relative position vector by the inertial velocity of the primary object. |
SEET | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
DamageFlux | Flux | Real Number | The total impact flux that cause damage, from all meteoroid particulates, found as a simple sum of the damaging impact flux of all particulates. |
DamageMassFlux | MassFlux | Real Number | The total impact mass flux that cause damage, from all meteoroid particulates, found as the integral of the damaging particle impact flux distribution with respect to mass. |
GeoMagFieldDipoleL | Unitless | Real Number | The L value for the field line passing through the vehicle's location computed using the dipole approximation to the magnetic field. |
GeoMagFieldFieldLineSeparation | Angle | Real Number or Text | The centric angle between the north footprint of the field line containing the vehicle's location and the north footprint of the field line containing the target's location. The north footprint is the point of intersection of the field line with the earth's surface north of the magnetic equator. If either north footprint is not defined, then the south footprint is used. |
ImpactFlux | Flux | Real Number | The total impact flux from all meteoroid particulates, found as a simple sum of the impact flux of all particulates. |
ImpactMassFlux | MassFlux | Real Number | The total impact mass flux from all meteoroid particulates, found as the integral of the particle impact flux distribution with respect to mass. |
SAAFluxIntensity | FluxIntensity | Real Number | The SAA flux intensity at the vehicle's location for the vehicle's channel specification. |
VehicleTemperature | Temperature | Real Number | Vehicle temperature, computed assuming thermal equilibrium. |
STM Eigenvalues | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
lambda1Imag | Unitless | Real Number | The imaginary part of the first eigenvalue. |
lambda1Real | Unitless | Real Number | The real part of the first eigenvalue. |
lambda2Imag | Unitless | Real Number | The imaginary part of the second eigenvalue. |
lambda2Real | Unitless | Real Number | The real part of the second eigenvalue. |
lambda3Imag | Unitless | Real Number | The imaginary part of the third eigenvalue. |
lambda3Real | Unitless | Real Number | The real part of the third eigenvalue. |
lambda4Imag | Unitless | Real Number | The imaginary part of the fourth eigenvalue. |
lambda4Real | Unitless | Real Number | The real part of the fourth eigenvalue. |
lambda5Imag | Unitless | Real Number | The imaginary part of the fifth eigenvalue. |
lambda5Real | Unitless | Real Number | The real part of the fifth eigenvalue. |
lambda6Imag | Unitless | Real Number | The imaginary part of the sixth eigenvalue. |
lambda6Real | Unitless | Real Number | The real part of the sixth eigenvalue. |
STM Eigenvectors | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Lambda1PosXImag | Unitless | Real Number | The imaginary part of the PosX component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda1PosXReal | Unitless | Real Number | The real part of the PosX component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda1PosYImag | Unitless | Real Number | The imaginary part of the PosY component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda1PosYReal | Unitless | Real Number | The real part of the PosY component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda1PosZImag | Unitless | Real Number | The imaginary part of the PosZ component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda1PosZReal | Unitless | Real Number | The real part of the PosZ component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda1VelXImag | Unitless | Real Number | The imaginary part of the VelX component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda1VelXReal | Unitless | Real Number | The real part of the VelX component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda1VelYImag | Unitless | Real Number | The imaginary part of the VelY component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda1VelYReal | Unitless | Real Number | The real part of the VelY component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda1VelZImag | Unitless | Real Number | The imaginary part of the VelZ component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda1VelZReal | Unitless | Real Number | The real part of the VelZ component of the first eigenvector (i.e., the eigenvector associated with the first eigenvalue lambda1). |
Lambda2PosXImag | Unitless | Real Number | The imaginary part of the PosX component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda2PosXReal | Unitless | Real Number | The real part of the PosX component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda2PosYImag | Unitless | Real Number | The imaginary part of the PosY component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda2PosYReal | Unitless | Real Number | The real part of the PosY component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda2PosZImag | Unitless | Real Number | The imaginary part of the PosZ component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda2PosZReal | Unitless | Real Number | The real part of the PosZ component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda2VelXImag | Unitless | Real Number | The imaginary part of the VelX component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda2VelXReal | Unitless | Real Number | The real part of the VelX component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda2VelYImag | Unitless | Real Number | The imaginary part of the VelY component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda2VelYReal | Unitless | Real Number | The real part of the VelY component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda2VelZImag | Unitless | Real Number | The imaginary part of the VelZ component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda2VelZReal | Unitless | Real Number | The real part of the VelZ component of the second eigenvector (i.e., the eigenvector associated with the second eigenvalue lambda2). |
Lambda3PosXImag | Unitless | Real Number | The imaginary part of the PosX component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda3PosXReal | Unitless | Real Number | The real part of the PosX component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda3PosYImag | Unitless | Real Number | The imaginary part of the PosY component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda3PosYReal | Unitless | Real Number | The real part of the PosY component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda3PosZImag | Unitless | Real Number | The imaginary part of the PosZ component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda3PosZReal | Unitless | Real Number | The real part of the PosZ component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda3VelXImag | Unitless | Real Number | The imaginary part of the VelX component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda3VelXReal | Unitless | Real Number | The real part of the VelX component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda3VelYImag | Unitless | Real Number | The imaginary part of the VelY component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda3VelYReal | Unitless | Real Number | The real part of the VelY component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda3VelZImag | Unitless | Real Number | The imaginary part of the VelZ component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda3VelZReal | Unitless | Real Number | The real part of the VelZ component of the third eigenvector (i.e., the eigenvector associated with the third eigenvalue lambda3). |
Lambda4PosXImag | Unitless | Real Number | The imaginary part of the PosX component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda4PosXReal | Unitless | Real Number | The real part of the PosX component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda4PosYImag | Unitless | Real Number | The imaginary part of the PosY component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda4PosYReal | Unitless | Real Number | The real part of the PosY component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda4PosZImag | Unitless | Real Number | The imaginary part of the PosZ component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda4PosZReal | Unitless | Real Number | The real part of the PosZ component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda4VelXImag | Unitless | Real Number | The imaginary part of the VelX component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda4VelXReal | Unitless | Real Number | The real part of the VelX component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda4VelYImag | Unitless | Real Number | The imaginary part of the VelY component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda4VelYReal | Unitless | Real Number | The real part of the VelY component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda4VelZImag | Unitless | Real Number | The imaginary part of the VelZ component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda4VelZReal | Unitless | Real Number | The real part of the VelZ component of the fourth eigenvector (i.e., the eigenvector associated with the fourth eigenvalue lambda4). |
Lambda5PosXImag | Unitless | Real Number | The imaginary part of the PosX component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda5PosXReal | Unitless | Real Number | The real part of the PosX component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda5PosYImag | Unitless | Real Number | The imaginary part of the PosY component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda5PosYReal | Unitless | Real Number | The real part of the PosY component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda5PosZImag | Unitless | Real Number | The imaginary part of the PosZ component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda5PosZReal | Unitless | Real Number | The real part of the PosZ component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda5VelXImag | Unitless | Real Number | The imaginary part of the VelX component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda5VelXReal | Unitless | Real Number | The real part of the VelX component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda5VelYImag | Unitless | Real Number | The imaginary part of the VelY component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda5VelYReal | Unitless | Real Number | The real part of the VelY component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda5VelZImag | Unitless | Real Number | The imaginary part of the VelZ component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda5VelZReal | Unitless | Real Number | The real part of the VelZ component of the fifth eigenvector (i.e., the eigenvector associated with the fifth eigenvalue lambda5). |
Lambda6PosXImag | Unitless | Real Number | The imaginary part of the PosX component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Lambda6PosXReal | Unitless | Real Number | The real part of the PosX component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Lambda6PosYImag | Unitless | Real Number | The imaginary part of the PosY component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Lambda6PosYReal | Unitless | Real Number | The real part of the PosY component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Lambda6PosZImag | Unitless | Real Number | The imaginary part of the PosZ component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Lambda6PosZReal | Unitless | Real Number | The real part of the PosZ component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Lambda6VelXImag | Unitless | Real Number | The imaginary part of the VelX component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Lambda6VelXReal | Unitless | Real Number | The real part of the VelX component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Lambda6VelYImag | Unitless | Real Number | The imaginary part of the VelY component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Lambda6VelYReal | Unitless | Real Number | The real part of the VelY component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Lambda6VelZImag | Unitless | Real Number | The imaginary part of the VelZ component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Lambda6VelZReal | Unitless | Real Number | The real part of the VelZ component of the sixth eigenvector (i.e., the eigenvector associated with the sixth eigenvalue lambda6). |
Scalar | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Scalar | Unitless | Real Number | Scalar calculation component. |
Scripts | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
CustomFunctionCalcObject | Unitless | Real Number | Calculation produced by a Custom Function. |
JScript | Unitless | Real Number | JScript. |
Matlab | Unitless | Real Number | Calculation produced by a MATLAB inline function. |
Perl | Unitless | Real Number | Calculation produced by a Perl inline function. |
VBScript | Unitless | Real Number | Calculation produced by a VBScript inline function. |
Spacecraft Properties | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Cd | Unitless | Real Number | The dimensionless drag coefficient associated with the drag area. |
Cr | Unitless | Real Number | The solar radiation pressure coefficient. |
DragArea | Small Area | Real Number | The area used in the computation of atmospheric drag. |
RadPressureArea | Small Area | Real Number | The area used in radiation pressure computations. |
RadPressureCoefficient | Unitless | Real Number | The radiation pressure coefficient. |
SRPArea | Small Area | Real Number | The area used in Solar radiation pressure computations. |
Spherical Elems | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Cosine_of_Vertical_FPA | Unitless | Real Number | The dot product of the unit position and unit velocity vectors. The Calc Object allows a choice of a central body. The default is Earth. |
Declination | Angle | Real Number or Text | The signed angle measured from the XY plane to the position vector, where positive angles are used for locations above the XY plane, and negative for those below. |
Declination_Rate | AngleRate | Real Number | The rate of change in the declination. |
Flight_Path_Angle | Angle | Real Number or Text | The angle between the position and velocity vectors. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
R_Mag | Distance | Real Number | The magnitude of the position vector (i.e. the radius vector). The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Right_Asc | Angle | Real Number or Text | The signed angle measured from the X axis to the projection of the position vector into the XY plane. The angle increases in the direction found by the right hand rule about the Z axis. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Right_Asc_Rate | AngleRate | Real Number | Right Ascension Rate. |
V_Mag | Rate | Real Number | The magnitude of the velocity vector, as observed in the coordinate system. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Velocity_Azimuth | Angle | Real Number or Text | The angle, measured in the plane perpendicular to the position vector, between the local north direction and the projection of the velocity vector onto that plane, measured as positive moving toward local east. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Target Vector | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
C3_Energy | Rate Squared | Real Number | An energy defined as -(mu/semi-major-axis). The Calc Object allows a choice of a central body. The default is Earth. |
Incoming_Asymptote_Dec | Angle | Real Number or Text | Declination of incoming asymptote or apsides. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Incoming_Asymptote_RA | Angle | Real Number or Text | Right Ascension of incoming asymptote or apsides. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Incoming_Vel_Az_at_Periapsis | Angle | Real Number or Text | Velocity azimuth at periapsis for incoming trajectory. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Outgoing_Asymptote_Dec | Angle | Real Number or Text | Declination of outgoing asymptote or apsides. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Outgoing_Asymptote_RA | Angle | Real Number or Text | Right Ascension of outgoing asymptote or apsides. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Outgoing_Vel_Az_at_Periapsis | Angle | Real Number or Text | Velocity azimuth at periapsis for outgoing trajectory. The Calc Object allows a choice of coordinate systems. The default is Earth Centered Inertial. |
Time | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Duration | Time | Real Number | The duration of the event. |
Number_of_Revolutions | Unitless | Real Number | The fraction of the osculating or mean orbit period since the startTime (not always monotonic). |
UserValues | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
User_value | Unitless | Real Number | The value of a user variable. |
Vector | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Angle | Angle | Real Number or Text | The value of the angle at the given time. |
Angle_Between_Vectors | Angle | Real Number or Text | The angle between two specified vectors. |
Dot_Product | Unitless | Real Number | The dot Product of two specified vectors. |
Vector_Dec | Angle | Real Number or Text | The declination of the specified vector. |
Vector_Mag | Unitless | Real Number | The magnitude of the specified vector. |
Vector_RA | Angle | Real Number or Text | The right ascension of the specified vector. |
Vector_X | Unitless | Real Number | The X component of the specified vector. |
Vector_Y | Unitless | Real Number | The Y component of the specified vector. |
Vector_Z | Unitless | Real Number | The Z component of the specified vector. |
Segment Data | |||
---|---|---|---|
Name | Dimension | Type | Description |
Time | Date | Real Number or Text | Time. |
Segment Name | Unitless | Text | The name of the segment that produced ephemeris over this interval. |
Segment Type | Unitless | Text | The type of the segment. |