土卫二十一又直接音譯為「特弗斯」或「塔沃斯」(S/2000 S 4, Tarvos),是环绕土星运行的一颗卫星。
概述
這顆衛星半长轴約為18,562,800公里,繞土星公轉週期944.23天,與黃道及土星赤道的軌道傾角為34.679°,軌道離心率0.5305。
参见
參考資料
- ^ IAUC 7513: S/2000 S 3 and S/2000 S 4 (页面存档备份,存于互联网档案馆) October 25, 2000 (discovery)
- ^ MPEC 2000-Y14: S/2000 S 3, S/2000 S 4, S/2000 S 5, S/2000 S 6, S/2000 S 10 (页面存档备份,存于互联网档案馆) December 19, 2000 (discovery and ephemeris)
- ^ 3.0 3.1 Jacobson, R.A. (2007) SAT270, SAT271. Planetary Satellite Mean Orbital Parameters. JPL/NASA. 2007-06-28 [2008-01-19]. (原始内容存档于2011-08-22).
- ^ 4.0 4.1 Scott Sheppard. Saturn's Known Satellites. Department of Terrestrial Magnetism. [2007-03-06]. (原始内容存档于2011-05-15).
- ^ Grav, Tommy; Holman, Matthew J.; Gladman, Brett J.; Aksnes, Kaare; Photometric survey of the irregular satellites (页面存档备份,存于互联网档案馆), Icarus, 166 (2003), pp. 33–45