Pease 1

Pease 1

Emission nebula
Planetary nebula
Observation data: J2000.0 epoch
Distance	33,600 [1] ly
Apparent magnitude (V)	+15.5[1]
Apparent dimensions (V)	3 arcsecs[1]
Constellation	Pegasus
Physical characteristics
Radius	0.24 ly
Absolute magnitude (V)	-

Pease 1 is a planetary nebula located within the globular cluster M15 33,600 light years away in the constellation Pegasus. It was the first planetary nebula known to exist within a globular cluster when it was discovered in 1928^[2] (for Francis G. Pease), and just four more have been found (in other clusters) since.^[1] At magnitude 15.5, it requires telescopes with an aperture of at least 300-millimetre (12 in) to be detected.^[3]

References

1. "Globular Cluster M15 and Planetary Nebula Pease 1". www.astropix.com. Archived from the original on 2011-07-18.
2. O'Meara, Stephen James; Levy, David H. (1998), Deep-Sky Companions: The Messier Objects, Cambridge University Press, p. 74, ISBN 978-0521553322.
3. Dunlop, Storm (2005). Atlas of the Night Sky. Collins. ISBN 0-00-717223-0.

External links

• Pease 1: Planetary Nebula in Messier 15, SEDS Messier pages