| Cyllene | |
| Pronounced: | [1] |
| Adjective: | Cyllenean |
| Named After: | Κυλλήνη Kyllēnē |
| Mpc Name: | Jupiter XLVIII |
| Alt Names: | S/2003 J 13 |
| Discoverer: | Scott S. Sheppard et al. |
| Discovered: | 2003 |
| Orbit Ref: | [2] |
| Inclination: | 149.3° |
| Eccentricity: | 0.319 |
| Period: | −737.8 days |
| Satellite Of: | Jupiter |
| Group: | Pasiphae group |
| Spectral Type: | B–V = 0.73 ± 0.07, V–R = 0.46 ± 0.07[3] |
| Magnitude: | 23.2 |
| Mean Diameter: | 2 km |
Cyllene, also known as , 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 .[4] [5]
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.[6] 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°.