absolute magnitude

absolute magnitude

noun Astronomy.
the magnitude of a star as it would appear to a hypothetical observer at a distance of 10 parsecs or 32.6 light-years.


Origin:
1900–05
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Absolute magnitude is always a great word to know.
So is companion. Does it mean:
the fainter of the two stars that constitute a double or binary star
a zodiacal constellation between Virgo and Serpens also called the Balance
Collins
World English Dictionary
absolute magnitude
 
n
the apparent magnitude a given star would have if it were situated at a distance of 10 parsecs (32.6 light years) from the earth

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
absolute magnitude  
See under at magnitude.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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