Pease 1

Pease 1
Emission nebula
Planetary nebula
Observation data: J2000.0 epoch
Distance	33,600 ly
Apparent magnitude (V)	+15.5
Apparent dimensions (V)	3 arcsecs
Constellation	Pegasus
Physical characteristics
Radius	0.24 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 (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.^[2]

References[]

^ ^a ^b ^c ^d http://www.astropix.com/HTML/SHOW_DIG/M15_Pease1.HTM^{[dead link]}
^ (2005). Atlas of the Night Sky. Collins. ISBN 0-00-717223-0.

External links[]

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

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[astropix-1] ttp://www.astropix.com/HTML/SHOW_DIG/M15_Pease1.HTM^{[dead link]}

[nightsky-2] (2005). Atlas of the Night Sky. Collins. ISBN 0-00-717223-0.

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