The Update segment can be used to modify the state of some of the satellite's properties to reflect changes that occur during the mission.
Astrogator <Satellite Object Path> SetValue <Attribute Path>.Update.{Attribute} <Value> [{Unit}]
The segment can be used to update all of the Spacecraft Configuration and Fuel Tank attributes except Tank Volume and GPS Solar Radiation Pressure.
Expand the table of contents to select a specific attribute.
STK Programming Interface 11.0.1