XEphem is a scientific grade ephemeris program – a piece of software that tells you wehere stuff is – or will be, in the night sky. This software has it roots in the 19080s and is therefore very mature and well behaved (plenty of time for fine tuning after all). Although it uses a motif interface, it is an exceptionally capabale, useful and accurate tool for both profesional and amateur astronomers. Ported to Pandora by MarkW.