(30759) 1981 EV41

(30759) 1981 EV41
Caractéristiques orbitales
Époque (JJ 2458200,5)[1]
Établi sur 739 observ. couvrant 13675 (U = 0)
Demi-grand axe (a) 406,392 x 106 km[1]
(2,716 56 ua)
Périhélie (q) 389,916 x 106 km[1]
(2,606 43 ua)
Aphélie (Q) 422,868 x 106 km[1]
(2,826 70 ua)
Excentricité (e) 0,04[1]
Période de révolution (Prév) 1 635 j
(4,48 a)
Inclinaison (i) 2,60°[1]
Longitude du nœud ascendant (Ω) 326,99°[1]
Argument du périhélie (ω) 142,6°[1]
Anomalie moyenne (M0) 161,6°[1]
Catégorie Astéroïde de la ceinture principale[1],[2]
Caractéristiques physiques
Dimensions 3,024 km
Magnitude absolue (H) 15,1[1],[2]
Albédo (A) 0,212

Découverte
Date le [1],[2]
Découvert par Schelte J. Bus[1],[2]
Lieu Observatoire de Siding Spring (Australie)[2]
Désignation 1981 EV41

(30759) 1981 EV41 est un astéroïde de la ceinture principale d'astéroïdes de 3,024 km de diamètre découvert en 1981.

Description

(30759) 1981 EV41 a été découvert le à l'observatoire de Siding Spring, situé près de Coonabarabran, en Nouvelle-Galles du Sud, en Australie, par Schelte J. Bus.

Caractéristiques orbitales

L'orbite de cet astéroïde est caractérisée par un demi-grand axe de 2,72 ua, un périhélie de 2,61 ua, une excentricité de 0,04 et une inclinaison de 2,60° par rapport à l'écliptique[1]. Du fait de ces caractéristiques, à savoir un demi-grand axe compris entre 2 et 3,2 ua et un périhélie supérieur à 1,666 ua, il est classé, selon la JPL Small-Body Database, comme objet de la ceinture principale d'astéroïdes[1].

Caractéristiques physiques

(30759) 1981 EV41 a une magnitude absolue (H) de 15,1 et un albédo estimé à 0,212, ce qui permet de calculer un diamètre de 3,024 km. Ces résultats ont été obtenus grâce aux observations du Wide-Field Infrared Survey Explorer (WISE), un télescope spatial américain mis en orbite en 2009 et observant l'ensemble du ciel dans l'infrarouge, et publiés en 2011 dans un article présentant les premiers résultats concernant les astéroïdes de la ceinture principale[3].

Voir aussi

Articles connexes

Liens externes

Références

  1. a b c d e f g h i j k l m n et o (en) « (30759) 1981 EV41 » [html], sur le site du Jet Propulsion Laboratory (consulté le )
  2. a b c d et e (en) « (30759) 1981 EV41 » [html], sur le site du Centre des planètes mineures (consulté le )
  3. (en) Joseph R Masiero, A. K Mainzer, T. Grav, J.M. Bauer, R.M. Cutri, J. Dailey,P.R.M. Eisenhardt, R.S. McMillan, T.B. Spahr, M.F. Skrutskie, D. Tholen, R.G. Walker, E.L. Wright, E. DeBaun, D. Elsbury, T. Gautier, S. Gomillion, A. Wilkins, « Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters », The Astrophysical Journal, vol. 741, no 2,‎ (DOI 10.1088/0004-637X/741/2/68)


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