Astronomy   View all facts   Glossary   Help
abstraction > mathematical concept > number > quantity > radiation measurement > magnitude > absolute magnitude
Next magnitudeapparent magnitude    Upmagnitude

absolute magnitude comparison table
Subject has unit is a kind of has value has symbol has definition
bolometric absolute magnituderadiation unitabsolute magnitude MbolA measure of the total amount of energy radiated by a star at all wavelengths. Mbol of Sun = 4.72 mag. The fraction of total energy emitted by a very blue or very red star that lies in the visible range may differ from the total energy by 4 or 5 mag - i.e., only a few percent of the energy lies in the visible.

Next magnitudeapparent magnitude    Upmagnitude