Usno
HNSKY v.2 3
HNSKY 2.30 is a program that puts a planetarium in your computer's screen. Hallo Northern Sky (this is the complete name) includes 26000 deepsky objects, all stars to magnitude 12, all planets and moons, along with hundreds of asteroids and comets.
XEphem v.3.6
A scientific-grade interactive astronomical ephemeris package.
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