Data Providers: Aircraft: Astrogator Values

Aircraft: Astrogator Values

Calc Object values, as a function of time. Each Calc Object contained in the Component Browser is available for use, including user defined Calc Objects. The Calc Objects listed here are representative.

Type: Time-varying data

Availability: Reports | Graphs | Dynamic Displays | Strip Charts

Name	Description
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.
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	Not defined for this class of object.
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.