(69990) 1998 WU31

(69990) 1998 WU31[1]
Caractéristiques orbitales
Époque (JJ 2455800,5)
Établi sur 31 observ. couvrant 6978 jours (U = 4)
Demi-grand axe (a) 5,90 × 109 km
(39,469 ua)
Périhélie (q) 4,78 × 109 km
(31,941 ua)
Aphélie (Q) 7,03 × 109 km
(46,997 ua)
Excentricité (e) 0,191
Période de révolution (Prév) 90 425 ± 43 j
(248 a)
Inclinaison (i) 6,6°
Longitude du nœud ascendant (Ω) 237,1°
Argument du périhélie (ω) 142,5°
Anomalie moyenne (M0) 38,8°
Catégorie Plutino
Caractéristiques physiques
Dimensions 110 km[2]
112 km[3]
Magnitude absolue (H) 8,18[1]
8,2[2]
Albédo (A) 0,08[2]
0,074[3]

Découverte
Date
Découvert par Marc Buie
Lieu Kitt Peak
Désignation 1998 WU31

modifier

(69990) 1998 WU31 est un objet transneptunien du groupe dynamique des plutinos.

Caractéristiques

(6990) 1998 WU31 mesure environ 110 km de diamètre.

Orbite

L'orbite[4] de 1998 WU31 possède un demi-grand axe de 39,469 ua et une période orbitale d'environ 248 ans. Son périhélie l'amène à 31,941 ua du Soleil et son aphélie l'en éloigne de 46,997 ua.

Découverte

1998 WU31 a été découvert le [4].

Annexes

Articles connexes

Liens externes

Références

  1. ↑ a et b (en) Caractéristiques et simulation d'orbite de 69990 dans la JPL Small-Body Database.
  2. ↑ a b et c (en) Michael E. Brown, « How many dwarf planets are there in the outer solar system? (updates daily) », California Institute of Technology (consulté le )
  3. ↑ a et b (en) « Liste des objets transneptuniens », sur www.johnstonsarchive.net, (consulté le )
  4. ↑ a et b (en) « List Of Transneptunian Objects », The Minor Planet Center (MPC) (consulté le )


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(69988) 1998 WA31
(69990) 1998 WU31
(70030) Margaretmiller
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Localisation Nuage local → Bulle locale → Ceinture de Gould → Bras d'Orion → Voie lactée → Sous-groupe local → Groupe local → Feuille locale → Volume local → Superamas de la Vierge → Superamas Vierge-Hydre-Centaure → Superamas Laniakea → Complexe de superamas Poissons-Baleine → Univers local → Univers observable → Univers
Histoire
Étoile Soleil
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