Key facts
- Discovered by
- Scott Sheppard et al.
- Designation
- Jupiter XXXIX
- Pronunciation
- / h ə ˈ dʒ ɛ m ə n iː /
- Named after
- Ἡγεμόνη Hēgemonē
- Alternative names
- S/2003 J 8
- Adjectives
- Hegemonean / ˌ h ɛ dʒ ə m ə ˈ n iː ə n /
- Observation arc
- 22 years, 2024-12-03 (last obs)
- Semi major axis
- 23 947 000 km
- Orbital period sidereal
- −739.6 days
- Inclination
- 155.2°
- Satellite of
- Jupiter
- Group
- Pasiphae group
- Mean diameter
- 3 km
- Absolute magnitude h
- 15.63 (45 obs)
via Wikipedia infobox
~1 min read
Encyclopedic overview
Hegemone /həˈdʒɛməniː/, also known as Jupiter XXXIX, is a natural satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaiʻi led by Scott S. Sheppard in 2003, and given the temporary designation S/2003 J 8.
Hegemone is about 3 kilometres in diameter, and orbits Jupiter at an average distance of 23,703,000 km in 745.500 days, at an inclination of 153° to the ecliptic (151° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.4077.
Excerpted from Wikipedia’s “Hegemone” article, available under the CC BY-SA 4.0 licence.