Pease 1

Pease 1
Emission nebula
Planetary nebula
Observation data: J2000.0 epoch
Distance33,600 [1] ly
Apparent magnitude (V)+15.5[1]
Apparent dimensions (V)3 arcsecs[1]
ConstellationPegasus
Physical characteristics
Radius0.24 ly
Absolute magnitude (V)-
See also: Lists of nebulae

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. ^ a b c d "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.


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