absolute magnitude


Definition of absolute magnitude

: a measure of the intrinsic luminosity of a celestial body (such as a star) expressed as the apparent magnitude the body would have if viewed from a distance of 10 parsecs

Examples of absolute magnitude in a Sentence

Recent Examples on the Web The really amazing thing about Katy Perry’s 110 million Twitter followers is not its absolute magnitude as much as the fact that the site’s entire monthly active user base is only about three times that size. Felix Salmon, WIRED, "Elon Musk and the Unnerving Influence of Twitter's Power Users," 5 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'absolute magnitude.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of absolute magnitude

1885, in the meaning defined above

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The first known use of absolute magnitude was in 1885

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Cite this Entry

“Absolute magnitude.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/absolute%20magnitude. Accessed 23 Nov. 2020.

More from Merriam-Webster on absolute magnitude

Britannica.com: Encyclopedia article about absolute magnitude

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