Helix Nebula (NGC 7293)

Details Helix Nebula (NGC 7293) Helix Nebula (NGC 7293)

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000eaa..booke5305.&link_type=abstract

"Encyclopedia of Astronomy and Astrophysics, Edited by Paul Murdin, article 5305. Bristol: Institute of Physics Publishing, 2001

Astronomy and Astrophysics

Astrophysics

Interstellar Medium, Interstellar Medium Objects

Scientific paper

A planetary nebula in the constellation Aquarius, position RA 22 h 29.6 m, dec. -20° 48'. It is the nearest planetary nebula to Earth, it has the largest angular size, at 15' by 12', and its magnitude of 6.5 makes it the brightest (though like all extended objects it does not have a high surface brightness). It is illuminated by its hot thirteenth-magnitude central star. The Helix gets its name f...

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