# 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
.

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 ?
0], rises in absolute magnitude in all but one case.
Absolute magnitude of change in FDI opportunities = number of Japanese [FDI.
These activities would be particularly appropriate for developing a sense of the relative and absolute magnitude of numbers and for encouraging benchmarking.
By knowing the distance and apparent magnitudes at different wavelengths, one can compute absolute magnitudes and the total light output of these objects.
The court's conclusion in this case is far from surprising in light of the regularity (annual) and absolute magnitude (substantial) of the circus' presence in Tennessee.
The object's blue appearance and absolute magnitude (-17.
The Company's current management has conclusively quantified the absolute magnitude of its financial challenges related to inherited legal issues and can now calmly and smoothly requite them.
The comet's brightness at the discovery return may have been due to a fragmentation event, as the absolute magnitude of the asteroid is very much fainter.
Buscombe and de Vaucouleurs showed in 1955 that the mean magnitude of novae 15 days after maximum light was a constant; more recent work (1995) shows that the absolute magnitude 15 days post-max is -5.
The absolute magnitude is defined as the apparent magnitude measured at 10 parsecs from the source.
Although the absolute magnitude of the efficacy benefit was reduced in large diameter vessels, the relative reduction compared to BMS was maintained.
The relative risk for a cardiovascular event remains the same, independent of baseline disease, but the absolute magnitude of risk is determined by the patients' baseline risk," Dr.

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