Planetary

a.
  1. Of or pertaining to the planets; as, planetary inhabitants; planetary motions; planetary year.
  2. Consisting of planets; as, a planetary system.
  3. (Astrol.) Under the dominion or influence of a planet.
  4. Caused by planets.
  5. Having the nature of a planet; erratic; revolving; wandering.
    6. Planetary days ,
    the days of the week as shared among the planets known to the ancients, each having its day.
    Planetary nebula ,
    a nebula exhibiting a uniform disk, like that of a planet.