Arche (moon)

Arche (pron-en|ˈɑrki "ARK-ee," or as in Greek "Αρχη)," also known as nowrap|Jupiter XLIII, is a moon of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2002, and received the temporary designation nowrap|S/2002 J 1. [ [http://cfa-www.harvard.edu/iauc/08000/08035.html IAUC 8035: "S/2002 J 1"] 2002 December 18 (discovery)] [ [http://cfa-www.harvard.edu/mpec/K02/K02Y22.html MPEC 2002-Y22: "S/2002 J 1"] 2002 December 18 (discovery and ephemeris)]

Arche is about 3 kilometres in diameter, and orbits Jupiter at an average distance of 23,717 Mm in 746.185 days, at an inclination of 165° to the ecliptic (162° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.149.

It was named in 2005 after Arche, whom some Greek writers described as one of the four original Muses, an addition to the earlier three (Aoede, Melete, and Mneme). [ [http://cfa-www.harvard.edu/iauc/08500/08502.html IAUC 8502: "Satellites of Jupiter"] 2005 March 30 (naming the moon)]

Arche belongs to the Carme group, made up of irregular retrograde moons orbiting Jupiter at a distance ranging between 23 and 24 Gm and at an inclination of about 165°.

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