An orbital determination of Triton with the use of a revised pole model

H. Y. Zhang (1, 2) , K. X. Shen (1) , G. Dourneau (3) , D. Harper (4) , R. C. Qiao (1) , X. J. Xi (1, 2) , X. Cheng (2) , D. Yan (1) , S. N. Li (5) , S. H. Wang (5)

1 NTSC - National Time Service Center [Lintong, Shaanxi]
2 GSCAS - Graduate School of the Chinese Academy of Sciences
3 LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
4 The Wellcome Trust Sanger Institute [Cambridge]
5 SHAO - Shanghai Astronomical Observatory [Shanghai]

In this paper, we used the 3108 Earth-based astrometric observations from the Natural Satellite Data Center over more than 30 yr time span from 1975 to 2006 for determining the epoch state vectors of the Neptunian largest satellite Triton. These observations almost contain all modern photo and CCD observations available. In integrating perturbation equation, the barycentric frame of Neptune-Triton system is adopted, and in considering the oblateness perturbation due to Neptune, a revised pole model describing the precession of the Neptune's pole is used in our calculation.

Mots clés: astrometry; planets and satellites: general

Domaines: Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]

H. Y. Zhang, K. X. Shen, G. Dourneau, D. Harper, R. C. Qiao, et al.. An orbital determination of Triton with the use of a revised pole model. Monthly Notices of the Royal Astronomical Society, 2014, 438 (2), pp.1663-1668. ⟨10.1093/MNRAS/STT2304⟩. ⟨hal-00944312⟩