A basic custom asteroid model created in Blender utilising a displace modifier and subdivison workflow, creating simple quad based topology. This can be used as a background element in a variety of different space scenes, and it looks decent enough in most renders! I updated this to unwrap the model and add PBR texture maps for your enjoyment!
Note: this was created in Blender, and as such a picture of the custom procedural node setup I used to achieve this texture in Blender should you wish to recreate it yourself