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abstraction > mathematical concept > number > quantity > radiation measurement > magnitude > absolute magnitude > bolometric absolute magnitude |
bolometric absolute magnitude comparison table |
Subject | is a kind of | has symbol | has definition |
---|---|---|---|
absolute magnitude | magnitude | The absolute magnitude (g) of a solar-system body such as an asteroid is defined as the brightness at zero phase angle when the object is 1 AU from the Sun and 1 AU from the observer. | |
bolometric absolute magnitude | absolute magnitude | Mbol | A 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. |