File:Thyone-discovery-CFHT-annotated.gif · Wikimedia Commons · See Wikimedia Commons
Thyone is a small moon that orbits Jupiter, one of many moons in Jupiter's system. While it is too distant and small to observe directly from Earth, studying it helps astronomers better understand the formation and composition of Jupiter's moon system.
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Wikidata facts
- Diameter
- 4
- Mass
- 90
- Orbital period
- 627.3
- Image
- Thyone-discovery-CFHT-annotated.gif
Show 10 more facts
- name
- Júpiter XXIX
- Commons category
- Thyone (moon)
- semi-major axis of an orbit
- 20940000
- orbital eccentricity
- 0.229
- albedo
- 0.04
- provisional designation
- S/2001 J 2
- time of discovery or invention
- 2001-12-11
- apparent magnitude
- 22.3
- surface gravity
- 0.0015
- orbital inclination
- 148.509
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Article
Thyone /θaɪˈoʊniː/, also known as Jupiter XXIX, is a retrograde irregular satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaiʻi led by Scott S. Sheppard in 2001, and given the temporary designation S/2001 J 2.
Thyone is about 4 kilometres in diameter, and orbits Jupiter at an average distance of 21,605,000 kilometres in 603.58 days, at an inclination of 147.28° to the ecliptic (146.93° to Jupiter's equator) with an eccentricity of 0.2526. Its average orbital speed is 2.43 km/s.