Regular moon
- 规则卫星（规则卫星是天文学中轨道顺行、轨道倾角或离心率小的原生卫星，与不规则卫星相对。八大行星共有55颗规则卫星，地球1颗，木星8颗，土星22颗，天王星18颗，海王星6颗）
Regular moon
-
abstract:
In astronomy, a regular moon is a natural satellite following a relatively close and prograde orbit with little orbital inclination or eccentricity. They are believed to have formed in orbit about their primary, as opposed to irregular moons, which were captured.
以上来源于:
WordNet