Messier 15

Globular cluster

Messier 15 is a globular cluster in the constellation of Pegasus. This globular cluster was discovered by Jean-Dominique Maraldi in 1746. M15 is about 33,600 lightyears from Earth, and 175 lightyears in diameter.[1] It has more than 100,000 stars, 112 variable stars and 8 pulsars. M15 also contains Pease 1, the first planetary nebula discovered in a globular cluster.[2]

Messier 15
Messier 15 HST.jpg
Observation data (J2000 epoch)
Distance33.6 kly (10.3 kpc)
Physical characteristics
Other designationsNGC 7078, GCl 120
See also: Globular cluster


  1. "Messier 15 on astropix". Archived from the original on 2013-01-16. Retrieved 2012-02-13.
  2. Cohen, J. G.; Gillett, F. C. (1989). "The peculiar planetary nebula in M22". Astrophysical Journal. 346: 803–807. Bibcode:1989ApJ...346..803C. doi:10.1086/168061. S2CID 119770028.{{cite journal}}: CS1 maint: multiple names: authors list (link)