Name
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Description
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AutoDowngradeInterpolation
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When turned on, the ephemeris will use lower-order interpolation methods when the interpolation method would require more vectors than available.
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CCSDSOEMProperties
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A collection of properties associated with reading and writing the header of CCSDS Ephemeris Files.
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CentralBody
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States in the ephemeris will be referenced from this central body.
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CurrentIndex
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The index of the vector that corresponds to the current state of the Spacecraft that is associated with this Ephemeris.
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DeclaredName
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The name of the object as declared.
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Duration
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The duration of the ephemeris. Equal to EndEpoch - StartEpoch.
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EndEpoch
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The epoch of the last vector in the ephemeris.
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FFEphemProperties
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A collection of properties and methods associated with handling the header and contents of an FFEphem ephemeris file.
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Filename
|
The filename of the Ephemeris file.
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InterpolationMethod
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The interpolation method that is to be used when propagating the Spacecraft to epochs between ephemeris states.
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Name
|
The name displayed for this object in output windows such as views, plots, and reports.
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NextEpoch
|
The epoch of the Vector following the current vector in the ephemeris. Returns -999 if the current vector is the last Vector in the ephemeris.
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NumberOfVectors
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The number of discrete states held within the ephemeris.
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ObjectId
|
The unique identifier for the object.
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ObjectType
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The type of the object.
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PriorEpoch
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The epoch of the Vector prior to the current vector in the ephemeris. Returns -999 if the current vector is the first Vector in the ephemeris.
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PropagationDirection
|
Determines the direction of information put to the ephemeris and the way the ephemeris putting rules are applied. Changing this property clears the ephemeris of vectors.
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SPKProperties
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A collection of properties and methods associated with handling writing SPICE file.
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StartEpoch
|
The epoch of the first vector in the ephemeris.
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StepSize
|
The time step for propagation of the spacecraft using the ephemeris. A StepSize of 0.0 means the Spacecraft will advance to the next entry in the ephemeris. Otherwise, the Spacecraft using the ephemeris will advance forwards or backwards by StepSize seconds. This property has no effect when producing an ephemeris file.
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WriteAcceleration
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Determines whether the Spacecraft's acceleration vector will be written to the ephemeris file.
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WriteAngularAcceleration
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Determines whether the Spacecraft's angular acceleration vector will be written to the ephemeris file.
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WriteAngularVelocity
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Determines whether the Spacecraft's angular velocity vector will be written to the ephemeris file.
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WriteAttitude
|
Determines whether the Spacecraft's orientation will be written to the ephemeris file.
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WriteClockBiasAndDrift
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Determines whether the Spacecraft's GPSReceiver Clock Bias and Drift will be written to the ephemeris file. This property is only used for writing to the SP3 Precise Ephemeris format.
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WritePositionVelocityCovariance
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Determines whether the Spacecraft's 6x6 position/velocity covariance matrix will be written to the ephemeris file. This property is only used for writing to the CCSDS OEM Ephemeris format.
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WritePosVel
|
Determines whether the Spacecraft position and velocity vectors will be written to the ephemeris file.
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