Dorin/Legends

Dorin was the dark, dusty homeworld of the Kel Dor with an atmosphere of carbon monoxide and helium.

It was located near two black holes, so access to the planet was limited. The planet was home of the Baran Do.

Dorin joined the Galactic Republic in 5,975 BBY and had direct representation in the Republic's Senate.

Jedi Master Plo Koon and his niece, Sha Koon, were both from Dorin.

Behind the scenes
Some fans say that Dorin looks almost like our own Mars except with a slight purple coloring. Note that this is only speculative and has not been confirmed by George Lucas or any other person affiliated with Lucasfilm.