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physical object > naked eye object > Andromeda galaxy
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Andromeda galaxy
(M 31)
subjectfact 
Andromeda galaxyhas NED datahas URL: http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=M31&extend=yes&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&zv_breaker=30000.0&list_limit=5&img_stamp=YES, 2001-09-27 09:31:21.0
has synonym M 312001-09-27 09:31:21.0
is a part of Local Group2001-09-27 09:31:21.0
has image has URL: http://www.seds.org/messier/m/m031.html, 2001-09-27 09:31:21.0
has definition Major spiral galaxy, 2.2 million light-years from Earth. Gravitationally bound to the Milky Way with which it shares membership in the Local Group, it is currently approaching us, rather than receding as is the case for most galaxies.has source: Ferris, T. 1988 Coming of Age in the Milky Way, Morrow, 2001-09-27 09:31:21.0
has definition A spiral galaxy (kS5 in Morgan's classification) in the Local Group, about 650-700 kpc distant (MV = -21), visible to the naked eye as a fuzzy patch in the constellation of Andromeda. Total mass about 3.1 × 1011 Msun ; i = 77°, heliocentric velocity - 180 km s-1. Its nucleus exhibits noncircular gas motions. It is similar to but slightly larger than our Galaxy.has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:21.0
has definition The largest galaxy in the Local Group. Also known as the Great Spiral and M31. It is about one and a half times the size of our own galaxy, and contains at least 300 globular clusters. Two smaller, elliptical galaxies (M32 and NGC 205) lie close to it.has source: Abbot, D. 1984 Astronomers, Peter Bedrick Books, New York, 2001-09-27 09:31:21.0
has definition The largest member of the local group. It is a giant spiral galaxy that lies 2.4 million light-years away.has source: Croswell, K. 1995 The Alchemy of the Heavens, Anchor Books, 2001-09-27 09:31:21.0
is an instance of galaxy containing Cepheids2001-09-27 09:31:17.0
is an instance of Sb spiralhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:21.0
is an instance of naked eye object2001-09-27 09:31:21.0
is an instance of hypergalaxyhas source: Silk, J. 1990 The Big Bang, W. H. Publishers, New York, 2001-09-27 09:31:21.0
is an instance of Messier object2001-09-27 09:31:21.0
Messier objecthas apparent dimension2001-09-27 09:30:24.0
has apparent magnitude2001-09-27 09:30:24.0
is a part of celestial sphere2001-09-27 09:30:24.0
has Messier number2001-09-27 09:30:24.0
has distance from Earth2001-09-27 09:30:24.0
has catalog Messier catalog2001-09-27 09:30:24.0
has purpose originally to catalog all objects which could be confused with a comet2001-09-27 09:30:24.0
galaxy containing Cepheidshas distance determined from Cepheid period-luminosity relation2001-09-27 09:31:17.0
has number of Cepheids2001-09-27 09:31:17.0
celestial bodyhas spectra2001-09-27 09:30:09.0
collection of galaxieshas number of galaxies2001-09-27 09:31:06.0
galaxyhas number of stars 106 to 10122001-09-27 09:31:09.0
physical objecthas location or center of gravity2001-09-27 09:27:27.0
has angular momentum2001-09-27 09:27:27.0
has mass2001-09-27 09:27:27.0
has velocity2001-09-27 09:27:27.0
has momentum2001-09-27 09:27:27.0
has temperature2001-09-27 09:27:27.0
has volume2001-09-27 09:27:27.0
has extent2001-09-27 09:27:27.0
has material2001-09-27 09:27:27.0
spiral galaxyhas classification criterion Subdivided according to the openness of the spiral arms as Sa spiral, Sb spiral or Sc spiral.2001-09-27 09:31:15.0
has mass 1010 to 1012 Msun2001-09-27 09:31:15.0

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