Star
Available Data Providers
| Name | Description |
|---|---|
| Active Constraints | Lists the constraints that are considered when computing access for the object. |
| All Constraints | Descriptions of all constraints available for this object and its parent object. |
| Angles | Reports angle and its time rate of change rate. Angle must be defined in the Vector Geometry Tool. |
| Astrometric Data | The astrometric parameters which serve as input to the stellar motion model including position at a specified epoch, proper motion and parallax. |
| Available Times | The time intervals over which the object is available to participate in access computations. |
| Axes Choose Axes | Reports the orientation and angular velocity of the selected set of axes relative to a chosen reference set of axes. The selected set of axes can be selected from any axes in the Vector Geometry Tool owned by the object; the reference axes may be chosen from any axes in the Vector Geometry Tool. |
| Crdn Available Times | Time intervals for which a Vector Geometry Tool component for the object is available. |
| Data Provider Detail | Data Provider Detail - hierarchically list the available data providers and all of the included elements. |
| Data Provider Summary | Data Provider Summary - a list of all available data providers. |
| J2000 Cartesian Position | The apparent direction of the star from the scenario's central body, expressed in J2000 components. |
| J2000 Position | The apparent direction of the star from the scenario's central body, expressed in angles with respect to J2000 axes. |
| Parameter Set: Attitude | The Attitude parameter set defines orientation of one set of Axes from VGT relative to another. This parameter includes the following sub-sets: Quaternion, Euler, DCM and AngleAxis. Quaternion includes four quaternion elements Q1, Q2, Q3, Q4. Euler includes all 12 sequences where within each there are three angles: A, B, C. DCM includes all nine elements of the direction cosine matrix; e.g., XX, XY, etc. AngleAxis includes X, Y, Z components of the unit axis of rotation and RotationAngle. |
| Parameter Set: Vector | The Vector parameter defines the position of one access object relative to the other. The position data can be reported in multiple different reference frames. |
| Physical Data | Properties of the star. |
| Scalar Calculations | Calculation component that produces scalar time-varying calculations. |
| User Supplied Data | Values of custom data associated with the object. |
| Vector Choose Axes | Reports the selected vector and its derivative in a specified reference set of axes. Both vector and axes must be defined in the Vector Geometry Tool. |
| Vector Choose Plane | Reports projection of the selected vector and its derivative on a specified reference plane. Both vector and plane must be defined in the Vector Geometry Tool. |
| Vectors(Fixed) | Reports the selected vector and its derivative in the object's central body fixed axes. The vector must be defined in the Vector Geometry Tool. |
| Vectors(ICRF) | Reports the selected vector and its derivative in ICRF axes. The vector must be defined in the Vector Geometry Tool. |
| Vectors(Inertial) | Reports the selected vector and its derivative in the object's central body inertial axes. The vector must be defined in the Vector Geometry Tool. |
| Vectors(J2000) | Reports the selected vector and its derivative in J2000 axes. The vector must be defined in the Vector Geometry Tool. |