Starcollector is when somebody collects genders related to stars and other space related things. Examples of genders one might collect are stargender, spacecoric, or caelgender. Those were just examples, as people can collect as many as they want. These can either be fluid, or static.
History and Flag
This term was coined by Fandom user Harmonix_Lol on March 10, 2021. They often collect genders related to space, so xe coined a term for it to fit moons. The starcollector flag was created on the same day by the same user.