Asterosian describes a man, or masculine aligned person, who is mlnb and mlm, meaning a man who is attracted to non-binary people and to men, and/or a man who prioritizes his attraction to men and non-binary people. This attraction does not have to be exclusive, one can be asterosian and be attracted to people other than men and NB people, assuming that one's attraction to men and NB people is important to them. Asterosian is an umbrella term, like achillean, and is typically not used as an identity on it's own, however it can be if desired. People included in this umbrella are pansexual men, bisexual men, and any other men who are attracted to men and non-binary people.
History
The term asterosian was coined by Tumblr user Proud-Nblm on May 22, 2018[1]. The flag was created with the same post. The term asterosian is a combination of erosian, another term for achillean (mlm), and astroidian, (mlnb). The flag's colors are also a combination of the erosian and astroidian flags.