(16870) 1998 BB

(16870) 1998 BB
Caractéristiques orbitales
Époque (JJ 2458200,5)[1]
Établi sur 1 417 observ. couvrant 8163 jours (U = 0)
Demi-grand axe (a) 343,809 × 106 km[1]
(2,298 22 ua)
Périhélie (q) 290,983 × 106 km[1]
(1,945 10 ua)
Aphélie (Q) 396,634 × 106 km[1]
(2,651 34 ua)
Excentricité (e) 0,15[1]
Période de révolution (Prév) 1 273 j
(3,48 a)
Inclinaison (i) 3,58°[1]
Longitude du nœud ascendant (Ω) 34,46°[1]
Argument du périhélie (ω) 1,3°[1]
Anomalie moyenne (M0) 346,4°[1]
Catégorie Astéroïde de la ceinture principale[1],[2]
Caractéristiques physiques
Dimensions 3,374 km
Magnitude absolue (H) 14,6[1],[2]
Albédo (A) 0,270

Découverte
Date le [1],[2]
Découvert par Takao Kobayashi[1],[2]
Lieu Ōizumi (Japon)[2]
Désignation (16870) 1998 BB[1],[2]

(16870) 1998 BB est un astéroïde de la ceinture principale d'astéroïdes de 3,374 km de diamètre découvert en 1998.

Description

(16870) 1998 BB a été découvert le à l'observatoire astronomique d'Ōizumi, situé à Ōizumi, dans la préfecture de Gunma, au Japon, par Takao Kobayashi.

Caractéristiques orbitales

L'orbite de cet astéroïde est caractérisée par un demi-grand axe de 2,30 UA, un périhélie de 1,95 UA, une excentricité de 0,15 et une inclinaison de 3,58° 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

(16870) 1998 BB a une magnitude absolue (H) de 14,6 et un albédo estimé à 0,270, ce qui permet de calculer un diamètre de 3,374 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 o et p (en) « (16870) 1998 BB » [html], sur le site du Jet Propulsion Laboratory (consulté le )
  2. a b c d e et f (en) « (16870) 1998 BB » [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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