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A star's "absolute magnitude" is a measure of its absolute (or real) brightness.

It is defined as the "apparent magnitude" the star would have at a standard distance of 10 parsecs, which is equal to 32.6 light years.

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10y ago
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12y ago

Depending on the type of supernova it can reach an absolute magnitude of −19.3 (or 5 billion times brighter than the Sun)

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15y ago

Quite low. Neutron stars are the crushed stellar "ash" that used to be a real star. They don't radiate much light, and are essentially invisible except for their gravity.

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Q: What is the stars absolute magnitude?
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Related questions

What is the absolute magnitude of the constellation scorpius?

Constellations don't have an absolute magnitude. That is a property of individual stars.


Why is the absolute magnitude of some stars greatar than their apparent magnitude?

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.


Explain why size is the only factor that determines the stars absolute magnitude?

The absolute magnitude is a measure of the star's luminosity hence the smaller the size the less the absolute magnitude.


What is absolute magnitude of most yellow stars?

Most "yellow" stars fall into the classification of type G - the same as our Sun.They have an absolute magnitude of around 5.


What is the magnitude of a star if all stars were the same distance from earth?

Absolute magnitude


What is thuban the stars luminosity?

Its absolute magnitude is -1.20.Its magnitude from our point of view is +3.65.


What is true about the absolute magnitude and temperature of supergiant stars?

Absolute magnitude: they are extremely bright. Temperature: their surface temperature is fairly low.


What is the absolute magnitude of cassiopeia?

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.


What is the actual amount of light a star gives off?

It is actually absolute magnitude, opposed to apparent magnitude which is how much light stars appear to give off.


What is the approximate absolute magnitude of Rigel?

The approximate absolute magnitude of Rigel is about -7.0. This makes it one of the brightest stars in the night sky.


Why is the absolute magnitude of some stars greater their apparent magnitude?

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.


What two things does a stars absolute magnitude depend?

Mass and age.