…or is it?

Here are some objects which may or may not be moons, shown to scale. Enjoy!

Organised by diameter:
Endor – 4900 km
Mercury – 4879 km
Luna – 3474 km
Pluto – 2377 km
Tethys – 1062 km
Ceres – 946 km
Starkiller Base – 660 km
Miranda – 472 km
Vesta – 530 km (mean)
Enceladus – 504 km
Mimas – 396 km
Death Star II – 200 km
Death Star – 160 km