absolute magnitude

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absolute 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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absolute magnitude

See magnitude.

absolute magnitude

[′ab·sə‚lüt ′mag·nə·tüd]
(astrophysics)
A measure of the brightness of a star equal to the magnitude the star would have at a distance of 10 parsecs from the observer.
The stellar magnitude any meteor would have if placed in the observer's zenith at a height of 100 kilometers.
(mathematics)
The absolute value of a number or quantity.
References in periodicals archive ?
However, our measure of accrual quality is theoretically and empirically related to the absolute magnitude of accruals, and Sloan (1996) documents that the level of accruals is less persistent than cash flows.
The distance to NGC 6210 is reported to be 1.57[+ or -]0.40 kiloparsecs [1] and so the absolute magnitudes for this object are selected as B = -1.28[+ or -]0.57, V = - 1.90[+ or -]0.57, R = -1.32[+ or -]0.57 and I = -0.63[+ or -]0.57.
However, although an order of magnitude lower in absolute magnitude of warp deformation and stress, CuW structures exhibited significant changes in warp deformation (36 to 50 percent) for both base-flange thickness and assembly brazing/process temperature.
Extinction altitude (km) = [5.65 x (Absolute magnitude)] + 87.9
Discovered by the Supernova Cosmology Project on February 21, 2006, it attained higher luminosity than SN 2006gy's peak absolute magnitude of -22.
The authors are grateful for the assistance given by Gerard Faure and John Greaves in the preparation of this paper: John for his analysis of LONEOS and 2MASS data and drawing our attention to the formula for the calculation of V magnitude, and Gerard for his encouragement in developing the methodology and suggesting its applicability to measurement of the absolute magnitudes of asteroids.
Absolute magnitudes are always written with a capital M, apparent magnitudes with a lowercase m.
Representing the entire range of absolute magnitudes of the stars on these charts, from +6 to -8, proved difficult.
Distances can be measured by finding the apparent magnitudes of a large sample of a galaxy's cluster population and comparing them with the expected absolute magnitudes.
Instead, we can use the formula to relate the asteroid's size to its so-called absolute magnitude, H, defined as the object's brightness if it were seen 1 a.u.
Once thought to be as much as 9,000 light-years away, Phi may be only 5,000 --and yet still have an absolute magnitude of -7.