Metear? Meteorar?
Maybe an Umbrar?It is only a meteor when it ceases to be a celestial object and falls. A Meteron might be a fallen celestial, then...
Asteroid doesn't turn into anything mellifluous.
So maybe Sattelar?
The asteroids that sit in stable locations in a planets orbit, sitting in Lagrange Points, are called Lagrangian or Trojan asteroids. Lagrangar is long. Trojar, however, works well.
One might have Constellars, or Zodiars...
Hey, it may not look like much, but it's got it where it counts.