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
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.
The absolute magnitude of effects of both heat treatment temperature and ash content are one order of magnitude higher than the absolute magnitude of the effect of pressing pressure.
These can then be combined together to find the absolute magnitude of the gradient at each point and the orientation of that gradient.
Lorenz found that the impact of errors with equal absolute magnitude was similar whether the errors initially appeared at the smallest scale (his experiment A) or the largest scale (his experiment B).
Pixel values at each point in the output represent the estimated absolute magnitude of the spatial gradient of the input image at that point.
The absolute magnitude of value sales growth rates is also threatened by substitutable products.
The lads are fresh from their first festival slot at Indiependence and currently working on their second album - without having released any singles from their debut Absolute Magnitude.
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.
Periodic comet 2P/ Encke was on its 62nd observed return, showed its usual diffuse coma and narrow ion tail and had a similar faint absolute magnitude to that seen over the last half-century.
Although it will only reach about +14th magnitude (based on an absolute magnitude of +22.
The distance modulus [mu] = m - M is the difference between the apparent magnitude m and the absolute magnitude M.
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'.