Constellgender is a xenogender in which ones gender changes based on what constellation is most visible at any given time.
History
Constellgender was coined on January 20, 2019 through an anonymous ask to the Tumblr blog imoga-pride[1].
Flag
The flag was created on December 24, 2019 by tumblr user mogai-princette (aka toasty-mogai).