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XEphem is an interactive astronomical ephemeris program for X Windows systems. It computes heliocentric, geocentric and topocentric information for fixed celestial objects and objects in heliocentric and geocentric orbits; has built-in support for all planet positions; the moons of Jupiter, Saturn and Earth; Mars' and Jupiter's central meridian longitude; Saturn's rings; and Jupiter's Great Red Spot

XEphem is an interactive astronomical ephemeris program for X Windows systems. It computes heliocentric, geocentric and topocentric information for fixed celestial objects and objects in heliocentric and geocentric orbits; has built-in support for all planet positions; the moons of Jupiter, Saturn and Earth; Mars' and Jupiter's central meridian longitude; Saturn's rings; and Jupiter's Great Red Spot

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2026-Mar-17 to 2026-Apr-16

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