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 absolute magnitude absolute magnitude /ˈæbsəlut ˈmæɡnɪˌtjuːd/

noun

  1. (astronomy) the magnitude that a star would have if it were viewed from a distance of 10 parsecs (32.62 light years) from the earth  ( absolute magnitude )
    (astronomy) the magnitude that a star would have if it were viewed from a distance of 10 parsecs (32.62 light years) from the earth