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(48639) 1995 TL8

(48639) 1995 TL8[1]
Description de l'image 1995 TL8 AnimLong.gif.
Caractéristiques orbitales
Époque (JJ 2457000.5)
Établi sur 363 observ. couvrant 10304 jours (U = 2)
Demi-grand axe (a) 7,858 × 109 km
(52,53 ua)
Périhélie (q) 6,006 × 109 km
(40,15 ua)
Aphélie (Q) 9,709 × 109 km
(64,9 ua)
Excentricité (e) 0,238 3
Période de révolution (Prév) 139 098 ± 88 j
(380,3 a)
Inclinaison (i) 0,242°
Longitude du nœud ascendant (Ω) 261°
Argument du périhélie (ω) 84,3°
Anomalie moyenne (M0) 40,9°
Catégorie objet épars
Satellites connus S/2002 (48639) 1
Caractéristiques physiques
Dimensions 222 km satellite de 101 km[2]
176 km satellite de 80 km[3]
494 km[4] (Brown ne tient pas compte de la découverte du satellite)
Magnitude absolue (H) 4,87[1]
5,1[4]
Albédo (A) 0,231[2]
0,07[4]

Découverte
Date
Découvert par Arianna Gleason
Lieu Kitt Peak
Désignation 1995 TL8

modifier

(48639) 1995 TL8 est un objet de la ceinture de Kuiper, considéré comme objet épars, qui mesurerait environ 200 km[5] selon Johnson, Brown lui donne un diamètre plus important en supposant un albedo plus faible.

Il possède une lune nommée S/2002 (48639) 1, d'environ 80 km de diamètre[5], orbitant à 430 ± 300 km[Note 1].

Comparaison, à taille égale, des systèmes (48639) 1995 TL8 et Terre-Lune

Voir aussi

Articles connexes

Liens externes

Références

  1. ↑ a et b (en) Caractéristiques et simulation d'orbite de 48639 dans la JPL Small-Body Database.
  2. ↑ a et b (en) « Liste des objets transneptuniens », sur www.johnstonsarchive.net, (consulté le )
  3. ↑ https://www.johnstonsarchive.net/astro/astmoons/am-48639.html
  4. ↑ a b et c (en) Michael E. Brown, « How many dwarf planets are there in the outer solar system? (updates daily) », sur California Institute of Technology (consulté le )
  5. ↑ a et b (en) « (48639) 1995 TL8 », sur www.johnstonsarchive.net (consulté le )

Notes

  1. ↑ Les estimations des 2 sites de Johnston donnent des valeurs différentes.


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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
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