Erinome, also known as Jupiter XXV, is a retrograde irregular satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2000, and given the temporary designation S/2000 J 4.
|Discovered by||Scott S. Sheppard|
David C. Jewitt
Yanga R. Fernandez
Eugene A. Magnier
|Discovery site||Mauna Kea Observatory|
|Discovery date||23 November 2000|
|Erinoma (Greek form unknown)|
|S/2000 J 4|
|Orbital characteristics |
|Epoch 17 December 2020 (JD 2459200.5)|
|Observation arc||16.34 yr (5,967 days)|
|0.1494286 AU (22,354,200 km)|
|0° 31m 38.062s / day|
|Inclination||164.81976° (to ecliptic)|
Erinome is about 3 kilometres in diameter, and orbits Jupiter at an average distance of 22,986,000 km in 682.80 days, at an inclination of 164° to the ecliptic (162° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.2552.
It 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°.
Erinome was named in October 2002 after the mythological Erinoma, a Cypriot woman said by the discovery group to be a "daughter of Celes, compelled by Venus to fall in love with Jupiter." (However, it was Jupiter whom Venus made fall in love with Erinoma, in order to ruin her.)
The final -a vowel of the name was changed to -e to accord with IAU naming conventions for retrograde moons. The story is only known in Latin, and manuscripts have the name as Erinoma, Erinona and Erittoma. The original Greek name, and thus the stressed syllable in Latin, is unknown. It might be a late corruption of Eurynome, in which case the stress would be on the third syllable (//?). Since there is no moon named 'Eurynome' as of 2020[update], this would not be ambiguous.