Vector.Epoch Property

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Description

For Vector objects built on vectors which are relative to the position of bodies that move in space over time, the Epoch property indicates the time at which the Vector is defined or re-evaluated.

To model a Vector that rotates in time, the Vector object should be updated any time the spacecraft state is updated. Therefore, the user should add a line Inside the control loop of the script to synchronize the coordinate system (in time) with the spacecraft, such asVector1.Epoch = Spacecraft1.Epoch;

The Epoch property can also be set to a time in GSFC MJD Format

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.

Attributes

Type:	number
Access:	read/write
Units:	day
Default Value:	"Undefined"

Syntax

myVariable1 = myVector1.Epoch;

myVector1.Epoch = myVariable1;