: the luminosity of a celestial body (such as a star) as observed from the earth — compare absolute magnitude
Examples of apparent magnitude in a Sentence
Recent Examples on the WebVega 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
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