Description
Determines the entry time, exit time, and duration of a Spacecraft's pass through the shadow of a central body. Events are reported for annular shadow conditions only. If the specified body is a member of the Earth-Moon system, the counterpart not specified will also be considered in shadow evaluation.
The shadow times are determined using a conical shadow. The three regions of the Spacecraft's central body's shadow, umbra, penumbra, and annular, are shown in the diagram below. AnnularShadowTimes reports events when the Spacecraft is in the annual portion of it's central body's shadow.
The three regions of the Spacecraft's central body's shadow.
Note: This method uses a spherical model for the occulting body. Use the options available in the VisibilityCalculator to exercise more control over the analysis.
Timing Precision Mode
This page describes functionality in millisecond timing precision mode. Millisecond timing precision mode is deprecated and will be removed in a future release. We recommend that you migrate your Mission Plans to nanosecond timing precision mode.
Click here to see the documentation for this object in nanosecond timing precision mode.
Overload List
Signatures |
Return Value |
Description |
Determines the entry time, exit time, and duration of a Spacecraft's pass through the shadow of the spacecraft's central body. |
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Spacecraft.AnnularShadowTimes(CelestialObject celestialObject) |
Determines the entry time, exit time, and duration of a Spacecraft's pass through the shadow of the central body specified by celestialObject. |
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Spacecraft.AnnularShadowTimes(Array EventTime, Array EventType) |
Determines the entry time, exit time, and duration of a Spacecraft's pass through the shadow of a central body. Events are reported for annular shadow conditions only. If the specified body is a member of the Earth-Moon system, the counterpart not specified will also be considered in shadow evaluation. |
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Spacecraft.AnnularShadowTimes(CelestialObject celestialObject, Array EventTime, Array EventType) |
Determines the entry time, exit time, and duration of a Spacecraft's pass through the shadow of a central body. Events are reported for annular shadow conditions only. If the specified body is a member of the Earth-Moon system, the counterpart not specified will also be considered in shadow evaluation. |
See also
Coverage and Contact Analysis Guide