Cyllene
Discovery
Discovered byScott S. Sheppard et al.
Discovery date2003
Designations
Designation
Jupiter XLVIII
Pronunciation/səˈliːniː/[1]
Named after
Κυλλήνη Kyllēnē
S/2003 J 13
AdjectivesCyllenean /sɪləˈniːən/[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 /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

    1. ↑ The adjective 'Cyllenean' is also used for Mercury,[2] though rarely, as for that referent the form is normally 'Cyllenian' /səˈliːniən/.[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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