Absolute magnitude - Wikipedia, the free encyclopedia
In astronomy, absolute magnitude (also known as absolute visual magnitude when measured in the standard V phometric band) measures a celestial object's intrinsic brightness. To derive the absolute...
en.wikipedia.org/wiki/Absolute_magnitude
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The apparent magnitude of the Sun is listed as -26.74. I want to know what is the formula used to compute this? How is this figure of -26.74 arrived at? Can this formula be employed for calculating the apparent magnitudes of stars of different spectral types too?
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curious.astro.cornell.edu/question.php?number=569
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The apparent brightness of a visible star, called apparent magnitude, is designated by a number usually falling between 0 and 6. A star with an apparent magnitude between 3.5 and 4.5 is called a 4th magnitude star.
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homepage.mac.com/kvmagruder/bcp/aster/general/mag.htm
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Apparent magnitude depends on an object’s actual (intrinsic) brightness, its distance from the observer, and, in the case of objects outside the Solar System, the amount of absorption by intervening matter. The brighter an object appears, the smaller the numerical value of its apparent magnitude.
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www.daviddarling.info/encyclopedia/A/appmag.html
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The brightness a star would have at 10 pc is its absolute magnitude (Mv). ... This is an intrinsic property of the star! ... This differs from apparent magnitude (mv) which is how bright a star appears in the sky.
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astrosun2.astro.cornell.edu/academics/courses/astro101/...
astrosun2.astro.cornell.edu/academics/courses/astro101/1998/lecture07/tsld003.htm
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A star’s absolute magnitude is the apparent magnitude it would have if it were 10 parsecs away (an arbitrarily chosen distance) and there were no intervening gas or dust. Symbol, M (in contrast to the lowercase “m” for apparent magnitude).
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www.sizes.com/units/magnitude_absolute.htm
www.sizes.com/units/magnitude_absolute.htm
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< Glossary of Astronomical Terms(Redirected from GAT: apparent magnitude) ... Stars were first assigned their apparent magnitude values by the Greek astronomer Hipparchus (160-127 B.C.). He cataloged the stars and assigned them values of 1 to the brightest stars and to dimmer stars he assigned higher numbers ending at 6,
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en.wikibooks.org/wiki/GAT:_apparent_magnitude
en.wikibooks.org/wiki/GAT:_apparent_magnitude
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The method we use today to compare the apparent brightness (magnitude) of stars began with Hipparchus, a Greek astronomer who lived in the second century BC. Hipparchus called the brightest star in each constellation "first magnitude." Ptolemy, in 140 A.D., refined Hipparchus' system and used a 1 to 6 scale to compare...
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chandra.harvard.edu/edu/formal/variable_stars/mag.html
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