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A measure of the apparent brightness of an object as seen in the sky. The fainter the object, the higher the numerical value of its magnitude. The faintest stars visible to the naked eye are of magnitude 6, whereas the brightest objects in the sky have a negative apparent magnitudes. A star is said to be of first magnitude has a magnitude of 1.49 or less, a star of second magnitude has a value of 1.50 to 2.49, and so on.[1]

References

  1. ^ Rees, Martin (ed.) (2008). Universe: The Definitive Visual Guide. Dorling Kindersley Inc. ISBN 9780756636708. 
4 Milky Way (ELitU)-blank This article is part of Project Astronomy, a All Birds project that aims to write comprehensive articles on each term related to astronomy.

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