Stuck

Kleodisen

Sandara

Ecliptus

Minaria

You can also basically just add "alpha" or "prime" or "major" or "minor" or some random numbers after or before these names to make them cooler.

One last one XD
Gehenna

And I'm outta ideas

Not Gehenna. That’s literally another name for Hell.

XD

Lol. Maybe some really awful planet then? XD