Cyllene (moon)

Cyllene /sɪˈliːniː/, 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
Discovery
Discovered byScott S. Sheppard
Discovery date2003
Designations
Designation
Jupiter XLVIII
Pronunciation/sɪˈliːniː/[1]
Named after
Κυλλήνη Kyllēnē
S/2003 J 13
AdjectivesCyllenean /sɪlɪˈniːən/[lower-alpha 1]
Orbital characteristics [4]
24349000 km
Eccentricity0.319
−737.8 days
Inclination149.3°
Satellite ofJupiter
GroupPasiphae group
Physical characteristics
Mean diameter
2 km
23.2

    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
    1. The adjective 'Cyllenean' is also used for Mercury,[2] though rarely, as for that referent the form is normally 'Cyllenian' /sɪˈliːniən/.[3]
    1. Noah Webster (1884) A Practical Dictionary of the English Language
    2. Thomas Chase (1882) Six books of the Æneid of Virgil (1877), p. 252
    3. "Cyllenian". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
    4. S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
    5. IAUC 8116: Satellites of Jupiter and Saturn Archived 2006-05-05 at the Wayback Machine 2003 April (discovery)
    6. MPEC 2003-G09: S/2003 J 13 2003 April (discovery and ephemeris)
    7. IAUC 8502: Satellites of Jupiter 2005 March (naming the moon)
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