distance modulus

n (Astronomy) astronomy a measure of the distance, r, of a celestial object too far away to show measurable parallax. It is given by m–M = 5 log(r/10), where m is its apparent magnitude (corrected for interstellar absorption) and M is its absolute magnitude

Translations

modulo di distanza

distance modulus

(moj -ŭ-lŭs) The difference between the apparent magnitude, m , and the absolute magnitude, M , of a star and therefore a measure of distance (see magnitude): m – M = 5 log(d /10) = 5 logd – 5

where d is the distance in parsecs. Distance modulus is used to determine the distances of stars and stellar clusters. It is corrected for interstellar extinction by an additional term (see magnitude).

Distance Modulus

in astronomy, the difference between the apparent (m) and absolute (M) magnitudes of a celestial body. This quantity is used to describe distances to stars and stellar systems. Whereas M depends only on the intrinsic luminosity of a star, m depends also on the distance r (in parsecs) to the star, that is, m – M = 5 log r — 5.

distance modulus

[′dis·təns ‚mäj·ə·ləs] (astronomy) modulus of distance

单词	distance modulus
释义	distance modulus distance modulus n (Astronomy) astronomy a measure of the distance, r, of a celestial object too far away to show measurable parallax. It is given by m–M = 5 log(r/10), where m is its apparent magnitude (corrected for interstellar absorption) and M is its absolute magnitude Translations modulo di distanza distance modulus distance modulus (moj -ŭ-lŭs) The difference between the apparent magnitude, m , and the absolute magnitude, M , of a star and therefore a measure of distance (see magnitude): m – M = 5 log(d /10) = 5 logd – 5 where d is the distance in parsecs. Distance modulus is used to determine the distances of stars and stellar clusters. It is corrected for interstellar extinction by an additional term (see magnitude). Distance Modulus in astronomy, the difference between the apparent (m) and absolute (M) magnitudes of a celestial body. This quantity is used to describe distances to stars and stellar systems. Whereas M depends only on the intrinsic luminosity of a star, m depends also on the distance r (in parsecs) to the star, that is, m – M = 5 log r — 5. distance modulus [′dis·təns ‚mäj·ə·ləs] (astronomy) modulus of distance
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