Arche (moon)

Summary

Arche /ˈɑːrk/, also known as 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 on 31 October 2002, and received the temporary designation S/2002 J 1.[2][3]

Arche
Bigs2002j1barrow.png
Discovery image of Arche by the University of Hawaii telescope in October 2002
Discovery
Discovered byScott S. Sheppard
Discovery siteMauna Kea Obs.
Discovery date31 October 2002
Designations
Designation
Jupiter XLIII
Pronunciation/ˈɑːrk/
Named after
Αρχή Archē
S/2002 J 1
AdjectivesArchean /ɑːrˈkən/
Orbital characteristics[1]
22931000 km
Eccentricity0.259
−723.9 days
126.7°
Inclination165.0°
350.7°
161.1°
Satellite ofJupiter
GroupCarme group
Physical characteristics
Mean diameter
3 km
22.8

Arche is about 3 kilometres in diameter, and orbits Jupiter at an average distance of 23,717,000 km 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).[4]

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°.

ReferencesEdit

  1. ^ S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
  2. ^ IAUC 8035: S/2002 J 1 Archived 2006-04-08 at the Wayback Machine 2002 December 18 (discovery)
  3. ^ MPEC 2002-Y22: S/2002 J 1 2002 December 18 (discovery and ephemeris)
  4. ^ IAUC 8502: Satellites of Jupiter 2005 March 30 (naming the moon)