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At what distance would a supernova of absolute magnitude -20 look as bright as the sun?
Wiki User
∙ 14y ago
Sun apparent mag -26.37. The super need to be closer than 10 parsecs. 6.37/2 Mags. ( light dims by a square law. 5 mags= 100 . 1 Mag 2.5118,
3.19...uh 18.9 closer. 1.7LY?
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoit is 21.5
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What are the relationships between apparent magnitude and absolute magnitude?
Apparent magnitude is the brightness of an object as seen from Earth without any atmosphere.Absolute magnitude is the brightness of an object as seen from a predetermined distance, depending on the object.For planets, the distance used is 1 AU (Astronomical Units). Stars and galaxies use 10 parsecs which is about 32.616 light years.The dimmer an object is the higher the positive value. The brighter an object is the higher the negative value.Examples:The Sun has an apparent magnitude of -26.74 but an absolute magnitude of 4.83Sirius has an apparent magnitude of -1.46 but an absolute magnitude of -1.42This means that from Earth, the Sun is a lot brighter, but if the Sun was replaced by Sirius, Sirius would be 25 times more luminous.See related links for more information
What is the absolute magnitude of this star m equals 6?
Magnitude = m - 5 (log10D) - 1) Where D is the star's luminosity distance in parsecs ----------------------------------------------------------------- In order to calculate a star's absolute magnitude, we need two pieces of information: -- its apparent magnitude, i.e., how bright it appears from Earth, and -- its distance from us.
How bright is Arcturus?
Arcturus has an absolute magnitude of -0.29 and an apparent magnitude of -0.04
How will a star bright if it was near the sun?
A star near the Sun might be brighter or dimmer, it depends on how big it is. Each star has an absolute magnitude and if you find out a star's absolute magnitude, and then subtract 31.4, that would be its visual magnitude at the Sun's distance from us.
What variable of apparent brightness is eliminated when discussing absolute brightness?
Distance. "Absolute magnitudes" are all calculated as if viewed from the same distance, while "apparent magnitude" is how bright the star appears to be as seen from Earth.
How bright was the brightest supernova in the universe?
As of January 2016 the brightest supernova reported was ASSN SN 15lh. It had an absolute magnitude of - 23.5. For comparison, the absolute magnitude of the Sun is 4.83.
What is a synonym for absolute magnitude and apparent magnitude?
Apparent magnitude: How bright something looks to us. Absolute magnitude: How bright something really is - expressed as the apparent magnitude it would have at a standard distance.
Is the brightness of a star compared to other stars called its magnitude.?
No; the "magnitude" is how bright the star is. It can either mean:* The apparent magnitude = how bright it seems to us, * The absolute magnitude = how bright the star really is (i.e., how bright it would seem at a standard distance).
What is the definition of absolute magnitude?
The absolute magnitude is the magnitude (brightness) an object would have at a standard distance - how bright would it look at a standard distance. For a star or galaxy, the standard distance of 10 parsecs is commonly used.
How bright a star actually is a distance of 32.6 light years from earth is called?
That's called the star's absolute magnitude.
How bright a star actually is at a distance of 32.6 light year from earth is called?
the absolute answer is absolute magnitude to be
How bright is a star actually is at a distance of 32.6 light years from Earth is called?
the absolute answer is absolute magnitude to be
How bright a star actually is at a distance of 32.6 light- years from Earth is called?
the absolute answer is absolute magnitude to be
What determines absolute magnitude?
How bright the object would be if it was the same distance from Earth as the sun is
What is a star's absolute brightness?
That means how bright the star really is. The "absolute magnitude" is defined as how bright the star would look if it were at a standard distance from us.
How bright a star actually is at a distance of 32.6 light years away from earth is?
That's the number called the star's "Absolute Magnitude".That is called the star's "absolute magnitude".
How are absolute magnitude and apparent magnitude alike?
Absolute magnitude and apparent magnitude are the same because they are both ways on how to measure the brightness of a star. Absolute magnitude is how bright is the star if we will see it in a 32.616 light-years distance while apparent magnitude is the brightness of it that we see on Earth.
