M37
open star cluster · in Auriga
4,571 light-years from Earth
The richest of the three bright clusters in Auriga, with thousands of stars; about a dozen of them have swollen into red giants. It even holds a planetary nebula, one of only a handful known in an open cluster.
- 4,570 light-years (Gaia) · its stars spread over about 40 light-years
- about 500 million years old · 600 of its stars as Gaia measured them
- kind
- nebula · star cluster
- catalogue
- M37 · NGC 2099
- size
- 41 light-years across