Also known as (90482) Orcus I Vanth, Orcus I, S/2005 (90482) 1
natural satellite orbiting 90482 Orcus
Key facts
- Discovered by
- Michael E. Brown Terry-Ann Suer
- Discovery date
- 13 November 2005
- Designation
- (90482) Orcus I
- Pronunciation
- / ˈ v æ n θ /
- Named after
- Vanth
- Adjectives
- Vanthian
- Semi major axis
- 8 999 .8 ± 9.1 km
- Eccentricity
- 0.000 91 ± 0.000 53
- Orbital period sidereal
- 9.539 154 ± 0.000 020 d
- Inclination
- 105.03 ° ± 0.18 ° (to celestial equator ), 90.54° ± 0.17° (to ecliptic )
- Longitude of ascending node
- 53.49° ± 0.33°
- Argument of periapsis
- 274.51°
- Satellite of
- Orcus
- Mean diameter
- 442.5 ± 10.2 km ( occultation ) , 475 ± 75 km ( thermal )
- Mass
- (8.7 ± 0.8) × 10 kg
- Mean density
- ≈1.9 ± 0.3 g/cm (occultation) , 1.5 +1.0, −0.5 g/cm (thermal)
- Synodic rotation period
- synchronous
- Albedo
- 0.08 ± 0.02
via Wikipedia infobox
Wikidata facts
- Instance of
- minor planet moon
- Named after
- Vanth
- Parent body
- Orcus
- Diameter
- 442.5
- Mass
- 87
- Orbital period
- 9.539154
- Image
- Orcus-vanth hst2.jpg
Show 12 more facts
- time of discovery or invention
- 2005-11-13
- provisional designation
- S/2005 (90482) 1
- absolute magnitude
- 4.88
- semi-major axis of an orbit
- 8999.8
- apparent magnitude
- 21.8
- orbital eccentricity
- 0.00091
- orbital inclination
- 105.03
- albedo
- 0.08
- density
- 1.5
- color index
- 1.03
- longitude of ascending node
- 53.49
- location of discovery
- Hubble Space Telescope
via Wikidata · CC0
Article · 中文
亡衛一（Vanth，萬斯）是古柏帶天體亡神星已知的衛星，由米高·布朗和T.-A. Suer共同發現。據以認定發現的影像是在2005年11月13日由哈勃太空望遠鏡取得的。發現者於2007年2月22日宣布發現消息 [1]（页面存档备份，存于互联网档案馆），並且已經確認了衛星的軌道。
Abstract from DBpedia / Wikipedia · CC BY-SA