Tag Archives: Arche

Astronomy Quick Facts – Arche

Arche is a very small moon of Jupiter’s, and is a member of the Carme group. It’s also known as Jupiter XLIII. It was discovered by a team of astronomers led by Scott S. Sheppard at the University of Hawaii in 2002. Very little is known about it.



  • Mean radius: 1.5 km
  • Mass: Unknown
  • Density: Unknown
  • Surface gravity: Unknown
  • Albedo: Unknown
  • Temperature: Unknown
  • Mean orbital radius: 23,717,000 km (semi-major axis)
  • Orbital period: 746.185 d (retrograde)
  • Inclination: 162° to Saturn’s equator
  • Eccentricity: 0.149

Name Origin

Arche was the fourth of the muses of origin. She was one of the five Boeotian muses. She is one of the daughters of Zeus and Mnemosyne.

5 Interesting Facts

1. Arche is a member of the Carme group, which orbits retrograde and at a highly inclined and eccentric orbit. Probably a captured asteroid.

2. Its original temporary designation was S/2002 J 1.

3. It’s pronounced ar-kee.

4. Sheppard has been involved in the discovery of 75 moons.

5. There’s very little known about Arche. I can’t do five interesting facts.

With such a highly inclined and eccentric orbit, and such a small size, it’s unlikely we’ll see any kind of exploration of this moon any time soon.