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海卫三

旅行者二号所拍摄的海卫三

海卫三(S/1989 N 6, Naiad)是环绕海王星运行的一颗卫星

海卫三的英文名称 Naiad 取名自希腊神话中居住于溪水、泉水中并统辖这些水泽的仙女“Naiads”。

海卫三是旅行者2号于1989年发现的最后的一颗海王星卫星。[1]就如海王星的其它卫星海卫四海卫五海卫六一样,它们的外形都是不规则,而且并没有任何地表活动的迹象。由于海卫三位于海王星的同步轨迹半径以内,它正受到海王星的潮汐力量影响,并开始崩坏。将来海卫三可能会完全崩溃,成为海王星的光环之一,又或坠落于海王星的表面永远消失。

基本参数

  • 公转轨道半径:48,227 千米
  • 卫星平均直径:66千米
  • 质量:1.9×1017千克
  • 公转轨道周期:0.294 d (7 h 6 min)
  • 公转轨道倾斜度:4.746°
  1. ^ IAUC 4867: NEPTUNE; JUPITER. www.cbat.eps.harvard.edu. [2022-03-24]. (原始内容存档于2017-09-28). 
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海卫三
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