CelestialObject.Mu Property

Top

Description

The gravity constant of the CelestialObject. This value is used for propagation of a Spacecraft with a point mass gravitational model. When a Spacecraft is propagated using a gravitational potential field file, the Mu (Gravity Constant) specified in the file is used for propagation of that Spacecraft.

Mu = GM (in km^3/s^2), where: G = 6.67259x10^-20 km^3/(kg*sec^2), M = mass (kg).

For custom CelestialObjects, the default Mu value is that of Earth from the DE440 file. For built-in CelestialObjects, the default value is retriefed from the DE file specified by the FF_SolarSystem.DefaultDEXXXFile property.

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:	km3/s2
Default Value:	398600.4355
Valid Range:	CelestialObject.Mu > 0

Syntax

myVariable1 = myCelestialObject1.Mu;

myCelestialObject1.Mu = myVariable1;