Spacecraft.AnnularShadowTimes Method

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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.

 

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.

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 nanosecond timing precision mode.

Click here to see the documentation for this object in millisecond timing precision mode.

 

Overload List

Signatures

Return Value

Description

Spacecraft.AnnularShadowTimes()

String

Determines the entry time, exit time, and duration of a Spacecraft's pass through the shadow of the spacecraft's central body.

Spacecraft.AnnularShadowTimes(CelestialObject celestialObject)

String

Determines the entry time, exit time, and duration of a Spacecraft's pass through the shadow of the central body specified by celestialObject.

Spacecraft.AnnularShadowTimes(TimeSpanArray EventTime, Array EventType)

Variable

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.

Spacecraft.AnnularShadowTimes(CelestialObject celestialObject, TimeSpanArray EventTime, Array EventType)

Variable

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.

 

 

See also

Spacecraft Object

Spacecraft Propagation Guide

Coverage and Contact Analysis Guide