apparent magnitude

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Related to Apparent Visual Magnitude: Absolute Visual Magnitude

apparent magnitude:

see magnitudemagnitude,
in astronomy, measure of the brightness of a star or other celestial object. The stars cataloged by Ptolemy (2d cent. A.D.), all visible with the unaided eye, were ranked on a brightness scale such that the brightest stars were of 1st magnitude and the dimmest stars
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apparent magnitude

See magnitude.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

apparent magnitude

[ə′pa·rənt ′mag·nə‚tüd]
(astronomy)
An index of a star's brightness relative to that of the other stars; it does not take into account the difference in distance between the stars and is not an indication of the star's true luminosity.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Quick facts about the Sun Mass (kg) 1.9891 x [10.sup.30] Diameter (km) 1.392 x [10.sup.6] Escape velocity (km x [s.sup.-1]) 617.7 Luminosity (watt) 3.846 x [10.sup.26] Mass conversion rate (km x [s.sup.-1]) 4.3 x [10.sup.9] Spectral type G2 V Absolute magnitude +4.83 Apparent visual magnitude -26.74 Distance from Earth (km) 1.47-1.52 x [10.sup.8] Core pressure (bar) 2.477 x [10.sup.11] Core temperature ([degrees]C) 1.571 x [10.sup.7] Rotation period (hours) 609.12
The brighter star (apparent visual magnitude 4.7) is a rare case of a star plainly visible to the naked eye that's only about half as luminous as the Sun.
where V is the apparent visual magnitude of the asteroid and |V.sub.s~ is that of the Sun.