The best replacement for moons is satellites.

The best alternatives to moons are rated as following:
★★★★★  satellites
★★★★  uranus
★★★★  planets
★★★★  rings
  dekaron
  venus moons
  saturn
  neptune

Your alternative for moons is not listed? Suggest!
Speaking about moons, one probably shouldn't forget about moons.

Other search terms related to moons and their ratings are:
★★★★★ moons
their own moons
mars
planets
You have in mind a companion for moons and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of moons in all years. Click on graph for more.
moons
satellites
uranus