pioneerspacesim/pioneer — pull request #1645 by Ae-2222 (2012-10-29 10:21:48+00:00)
Title: Fix star orbit frame size being 0 if there are no children. 

The star orbit frame size depended only on the furtherest child. For stars without orbiting bodies (single star systems or stars (like brown dwarves) orbiting others the orbit frame radius was zero.

This also avoids the issues in #1626 for the case of Achernar. Stars which are heavy and have small radius like white dwarfs will still have autopilot problems.