Cassiopeia is a constellation, not a single star, so it does not have a specific absolute magnitude. The stars within the constellation Cassiopeia have a range of absolute magnitudes depending on their distance and luminosity.
The approximate absolute magnitude of Rigel is about -7.0. This makes it one of the brightest stars in the night sky.
Rigel has an apparent magnitude of around 0.12, making it one of the brightest stars in the sky. Its absolute magnitude, which measures intrinsic brightness, is around -7.0, indicating its high luminosity.
Red giants.
distance from the Earth. The apparent magnitude of a star is how bright it appears from Earth, while the absolute magnitude is how bright a star would be if it were located at a standard distance of 10 parsecs away from Earth. The difference in magnitude is primarily influenced by the star's distance, with closer stars having a smaller difference and more distant stars having a larger difference between their apparent and absolute magnitude.
Constellations don't have an absolute magnitude. That is a property of individual stars.
The question is: Why is the apparent magnitude of some stars less than their absolute magnitude. Or: Why do some stars not look as bright as they really are ? The answer is: Because they're so far away from us.
The absolute magnitude is a measure of the star's luminosity hence the smaller the size the less the absolute magnitude.
Most "yellow" stars fall into the classification of type G - the same as our Sun.They have an absolute magnitude of around 5.
Absolute magnitude
Its absolute magnitude is -1.20.Its magnitude from our point of view is +3.65.
Absolute magnitude: they are extremely bright. Temperature: their surface temperature is fairly low.
Cassiopeia is a constellation, not a single star, so it does not have a specific absolute magnitude. The stars within the constellation Cassiopeia have a range of absolute magnitudes depending on their distance and luminosity.
It is actually absolute magnitude, opposed to apparent magnitude which is how much light stars appear to give off.
The approximate absolute magnitude of Rigel is about -7.0. This makes it one of the brightest stars in the night sky.
The apparent magnitude is how bright the star appears to us, but stars are all at different distances so that a star that is really bright might look dim because it is very far away. So the absolute magnitude measures how bright the star would look if it was placed at a standard distance of 10 parsecs. When the absolute magnitude is greater than the apparent magnitude, it just means that it is closer than 10 pc. The brightest stars have absolute magnitudes around -7.
Mass and age.