Determines the entry time, exit time, and duration of a Spacecraft's pass through the Earth's shadow. Events are reported for Penumbra, Umbra, or Annular shadow condition geometries.
The shadow times are determined using a conical shadow. The algorithm to determine the times a Spacecraft is in any portion of the Earth's shadow is shown in the diagram below.
The algorithm used to determine when the Spacecraft is in any portion of the Earth's shadow.
Timing Precision Mode
This page describes functionality in nanosecond timing precision mode.