Algol or the Demon star is a star in the constellation Perseus.
It has an apparent magnitude (as seen from Earth) of 2.12 or an absolute magnitude of -0.15.
See related link for more information.
-0.15
Theres `Absolute Magnitude` which is the brightness of a star at a set distance. Then there is `Apparent Magnitude` which is the apparent brightness from earth, regardless of distance.
The absolute magnitude is -7.92
-6.02
The term is "absolute magnitude".
1) absolute brightness 2) distance 3) intervening dust
Absolute Brightness: How bright a star appears at a certain distance. Apparent Brightness: The brightness of a star as seen from Earth.
Theres `Absolute Magnitude` which is the brightness of a star at a set distance. Then there is `Apparent Magnitude` which is the apparent brightness from earth, regardless of distance.
the brightness of a star
Absolute Brightness .
The absolute magnitude is -7.92
A fixed star, in Medusa's head, in the constellation Perseus, remarkable for its periodic variation in brightness.
If you mean infinite brightness, then nothing.
-6.02
Energy output, as absolute brightness (magnitude) is taken at a standard distance of 10 parsecs.
Anything that is not the measure of intrinsic brightness of a celestial object.
Algol is an "eclipsing binary", meaning there are two stars, one of which regularly covers the other. When that happens, we receive less light from the pair.
Brightness corresponds to amplitude of waves. Greater amplitude means greater brightness (so lower amplitude means less brightness).