单词	apparent magnitude
释义	apparent magnitude noun : the luminosity of a celestial body (such as a star) as observed from the earth compare absolute magnitude Example Sentences Recent Examples on the Web The fifth brightest star in the night sky and about 25 light-years away, this blue star is a yardstick for judging the apparent magnitude, or brightness, of stars. Jamie Carter, Forbes, 5 June 2022 Vega is how the apparent magnitude of stars—their brightness—is measured. Jamie Carter, Forbes, 31 May 2021 For example, Neptune has an apparent magnitude of about 7.7. Jackie Wattles, CNN, 2 July 2020 The dimmest stars humans can see with the naked eye have an apparent magnitude (intrinsic magnitude modified by distance) of about 6 (lower numbers are brighter). Jay Bennett, Popular Mechanics, 26 Mar. 2018 Word History First Known Use 1708, in the meaning defined above
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