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apparent magnitude

noun Astronomy.

the magnitude of a star as it appears to an observer on the earth.

Compare absolute magnitude.

Origin:
1870–75

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Apparent magnitude is always a great word to know.

So is horizon. Does it mean:

the small circle of the celestial sphere whose plane is tangent to the earth at the position of the observer

the time when the sun is farthest south from the celestial equator occurring around December 21st

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Collins

World English Dictionary

apparent magnitude

—n
	another name for magnitude

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

apparent magnitude
See under magnitude.

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