Astronomy:Cyllene (moon)
| Discovery | |
|---|---|
| Discovered by | Scott S. Sheppard et al. |
| Discovery date | 2003 |
| Designations | |
Designation | Jupiter XLVIII |
| Pronunciation | /səˈliːniː/[1] |
| Named after | Κυλλήνη Kyllēnē |
| S/2003 J 13 | |
| Adjectives | Cyllenean /sɪləˈniːən/[lower-alpha 1] |
| Orbital characteristics [4] | |
| 24349000 km | |
| Eccentricity | 0.319 |
| Orbital period | −737.8 days |
| Inclination | 149.3° |
| Satellite of | Jupiter |
| Group | Pasiphae group |
| Physical characteristics | |
| Mean diameter | 2 km |
| Apparent magnitude | 23.2 |
Cyllene /səˈliːniː/, also known as Jupiter XLVIII, is a natural satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003, receiving the temporary designation S/2003 J 13.[5][6]
Cyllene is about 2 kilometres in diameter, and orbits Jupiter at an average distance of (23.4 million km) 23,396,000 km in 731.099 days (2.00 earth years), at an inclination of 140.149° to the ecliptic (139.543° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.4116.
It was named in March 2005 after Cyllene, a naiad (stream nymph) or oread (mountain nymph) associated with Mount Cyllene, Greece.[7] She was a daughter of Zeus (Jupiter).
It belongs to the Pasiphae group, irregular retrograde moons orbiting Jupiter at distances ranging between 22.8 and 24.1 Gm, and with inclinations ranging between 144.5° and 158.3°.
References
- ↑ The adjective 'Cyllenean' is also used for Mercury,[2] though rarely, as for that referent the form is normally 'Cyllenian' /səˈliːniən/.[3]
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ Thomas Chase (1882) Six books of the Æneid of Virgil (1877), p. 252
- ↑ Cyllenian (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Cyllenian (Subscription or UK public library membership required.)
- ↑ S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
- ↑ IAUC 8116: Satellites of Jupiter and Saturn 2003 April (discovery)
- ↑ MPEC 2003-G09: S/2003 J 13 2003 April (discovery and ephemeris)
- ↑ IAUC 8502: Satellites of Jupiter 2005 March (naming the moon)
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