absolute magnitude


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absolute magnitude

n.
The intrinsic brightness of a celestial body, measured in magnitudes, computed as if viewed from a distance of 10 parsecs, or 32.6 light years.

absolute magnitude

n
(Astronomy) the apparent magnitude a given star would have if it were situated at a distance of 10 parsecs (32.6 light years) from the earth

ab′solute mag′nitude


n.
the magnitude of a star as it would appear to a hypothetical observer at a distance of 10 parsecs or 32.6 light-years.
[1900–05]

absolute magnitude

A star’s size when seen from a distance of 10 parsecs.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.absolute magnitude - (astronomy) the magnitude that a star would have if it were viewed from a distance of 10 parsecs (32.62 light years) from the earthabsolute magnitude - (astronomy) the magnitude that a star would have if it were viewed from a distance of 10 parsecs (32.62 light years) from the earth
magnitude - the property of relative size or extent (whether large or small); "they tried to predict the magnitude of the explosion"; "about the magnitude of a small pea"
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
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References in periodicals archive ?
Each star within the constellation was represented through different heights (distance as measured by light years from earth) and a range of colours relating to the apparent and absolute magnitude or brightness of the stars that make up the constellation.
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The distance modulus [mu] = m - M is the difference between the apparent magnitude m and the absolute magnitude M.
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The connection with measurement units, however, is not entirely explicit within the framework and the author of this article would recommend that in addition to 'Developing a sense of the relative and absolute magnitude of numbers' and a 'system of benchmarks' (from the first key component), another understanding is included, which could be termed 'Developing a sense of the relationship between the number of units and the size of the unit'.
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