1) Create `json` file in `config/StarMaker/resources/RES_FOLDER/bodies/moons/`
Ex.: `phobos.json`
File name = Moon name
2) Open with help text editor file and put code from above planet section.
3) Replace this strings:
```"parent_system": "sol" -> "parent_planet": "mars"
"distance_from_center": 4.25, -> "distance_from_center": 25.4```