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
To install xephem, run the following command in macOS terminal (Applications->Utilities->Terminal)
sudo port install xephem
To see what files were installed by xephem, run:
port contents xephem
To later upgrade xephem, run:
sudo port selfupdate && sudo port upgrade xephem
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