English Explanatory Dictionary

apparent magnitude

English dictionary entry

Meanings

noun
  1. a numerical measure of the brightness of a star, planet etc.; a star with apparent magnitude 0 gives an illuminance of 2.54 microlux just outside the earth's atmosphere, or 82% of that (2.08 microlux) under clear skies, and every increase of 1 unit represents a decrease in the light received by a factor of 2.512.

Pronunciation

LL-Q1860 (eng)-Flame, not lame-apparent magnitude.wav

Word forms

apparent magnitude apparent magnitudes

Related words

absolute magnitude bolometric magnitude
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