Messier 15

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
Observation data (J2000 epoch)
Class	IV
Constellation	Pegasus
Distance	33.6 kly (10.3 kpc)
Physical characteristics
Other designations	NGC 7078, GCl 120
See also: Globular cluster