SGP4Properties.Bstar Property

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Description

A special "drag" term associated with the SGP4 propagator. It measured in units of 1/earth radii and is related to the Spacecraft's Cd. It is obtained by having FreeFlyer import a Two-Line Element (TLE) state vector. It is also computed by FreeFlyer when a conversion from Cartesian elements to SGP4 elements is invoked.

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.

Attributes

Type:	number
Access:	read/write
Units:	er-1
Default Value:	0.0002

Syntax

myVariable1 = mySGP4Properties1.Bstar;

mySGP4Properties1.Bstar = myVariable1;