Trusty old XEphem[0] is still with us, ("Free download"). It has that charming old Xlib dependency but packs a lot of surprising options to compute and display

Trusty old XEphem[0] is still with us, ("Free download"). It has that charming old Xlib dependency but packs a lot of surprising options to compute and display planetary motions etc. [0] http://www.clearskyinstitute.com/xephem/ http://www.clearskyinstitute.com/xephem/