Hi Andrew (Puckett),

I was about to echo Andrew (Lowe), but realized that while one
can indeed tell Find_Orb to use only heliocentric orbits, it doesn't
"stick": the next time you start the program, it may revert to a
planet-centric orbit if mathematically appropriate.

You can override this behavior by adding the line

HELIOCENTRIC=y

to 'environ.dat'. But you really shouldn't have to do this; if
you check that box, it obviously ought to stay checked the next time
you fire up the program. I'll fix this.

-- Bill