(7371) El-Baz

(7371) El-Baz
Caractéristiques orbitales
Époque (JJ 2458200,5)[1]
Établi sur 1 154 observ. couvrant 14122 jours (U = 0)
Demi-grand axe (a) 483,761 × 106 km[1]
(3,233 74 ua)
Périhélie (q) 423,093 × 106 km[1]
(2,828 20 ua)
Aphélie (Q) 544,429 × 106 km[1]
(3,639 28 ua)
Excentricité (e) 0,13[1]
Période de révolution (Prév) 2 124 j
(5,82 a)
Inclinaison (i) 2,04°[1]
Longitude du nœud ascendant (Ω) 60,64°[1]
Argument du périhélie (ω) 206,3°[1]
Anomalie moyenne (M0) 88,4°[1]
Catégorie Astéroïde de la ceinture principale[1],[2]
Caractéristiques physiques
Dimensions 9,224 km
Magnitude absolue (H) 13,7[1],[2]
Albédo (A) 0,074

Découverte
Date le [1],[2]
Découvert par Eleanor Francis Helin et Schelte J. Bus[1],[2]
Lieu Observatoire Palomar (Californie)[2]
Nommé d'après Farouk El-Baz
Désignation 1978 VA6[1],[2]

(7371) El-Baz (désignation provisoire 1978 VA6) est un objet de la ceinture principale extérieure de 9,224 km de diamètre découvert en 1978.

Description

(7371) El-Baz a été découvert le à l'observatoire Palomar, situé au nord de San Diego en Californie, par Eleanor Francis Helin et Schelte J. Bus.

Caractéristiques orbitales

L'orbite de cet astéroïde est caractérisée par un demi-grand axe de 3,23 UA, un périhélie de 2,83 UA, une excentricité de 0,13 et une inclinaison de 2,04° par rapport à l'écliptique[1]. Du fait de ces caractéristiques, à savoir un demi-grand axe entre 3,2 et 4,6 UA, il est classé, selon la JPL Small-Body Database, comme objet de la ceinture principale extérieure[2].

Caractéristiques physiques

(7371) El-Baz a une magnitude absolue (H) de 13,7 et un albédo estimé à 0,074, ce qui permet de calculer un diamètre de 9,224 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

Références

  1. a b c d e f g h i j k l m n et o (en) « (7371) 1978 VA6 » [html], sur le site du Jet Propulsion Laboratory (consulté le )
  2. a b c d e f et g (en) « (7371) 1978 VA6 » [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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