Celestial body classified in the Morgan-Keenan system (4)

I believe the answer is:

star

(Other definitions for star that I've seen before include "For example, Marilyn Monroe" , "Asterisk" , "Celeb" , "Celestial body of hot gases" , "Sirius, eg" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.