Arche (moon)

Arche

Discovery image of Arche by the University of Hawaii telescope in October 2002

Discovery
Discovered by| Scott S. Sheppard
Discovery site| Mauna Kea Obs.
Discovery date| 31 October 2002
Designations

Designation

| Jupiter XLIII
Pronunciation| /ˈɑːrkiː/
Named after| Αρχή Archē

Alternative names

| S/2002 J 1
Adjectives| Archean /ɑːrˈkiːən/
Orbital characteristics [1]

Semi-major axis

| 22931000 km
Eccentricity| 0.259
Orbital period| −723.9 days
Mean anomaly| 126.7°
Inclination| 165.0°
Longitude of ascending node| 350.7°

|{{{apsis}}}|helion}}

| 161.1°
Satellite of| Jupiter
Group| Carme group
Physical characteristics
Mean diameter| 3 km
Apparent magnitude| 22.8

Arche /ˈɑːrkiː/, 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 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°.

## References

1. ↑ S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
2. ↑ IAUC 8035: S/2002 J 1 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)

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Moons of Jupiter

Listed in approximately increasing distance from Jupiter. Provisional designations in italics.

Inner moons|

* Metis
* Adrastea
* Amalthea
* Thebe

Galilean moons|

* Io
* Europa
* Ganymede
* Callisto

Themisto group|

* Themisto

Himalia group|

* Leda
* Himalia
* Ersa
* Pandia
* Lysithea
* Elara
* Dia

Carpo group|

* Carpo

Valetudo group|

* Valetudo

Ananke group|

* S/2003 J 12(?)
* Euporie
* Eupheme
* Jupiter LV
* Jupiter LII
* Thelxinoe
* Euanthe
* Helike
* Orthosie
* Jupiter LXVIII
* Jupiter LIV
* Jupiter LXIV
* Iocaste
* S/2003 J 16(?)
* Praxidike
* Harpalyke
* Mneme
* Hermippe
* Thyone
* Jupiter LXX
* Ananke

Carme group|

* Jupiter LXXII
* Herse
* Aitne
* Kale
* Taygete
* Jupiter LXI
* Chaldene
* S/2003 J 10(?)
* Erinome
* Kallichore
* Jupiter LXVI
* Jupiter LXIX
* Kalyke
* Carme
* Jupiter LXIII
* Pasithee
* Jupiter LI
* Eukelade
* Arche
* Isonoe
* S/2003 J 9(?)
* Eirene

Pasiphae group|

* Jupiter LXVII
* Philophrosyne
* S/2003 J 23(?)
* Aoede
* Callirrhoe
* Eurydome
* Kore
* Cyllene
* Jupiter LVI
* Jupiter LIX
* S/2003 J 4(?)
* Pasiphae
* Hegemone
* Sinope
* Sponde
* Autonoe
* Megaclite
* S/2003 J 2(?)

* Rings of Jupiter
* In fiction

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