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The light from Sirius is 24.2 times more intense than light from Polaris What is the magnitude difference?
Wiki User
∙ 15y ago
Apparent magnitude of Sirius = -1.44
Apparent magnitude of Polaris = 1.97
To the Earthbound observer, Sirius appears (1.44 + 1.97) = 3.41 magnitudes
brighter than Polaris.
1 magnitude = (100)1/6 times as bright
3.41 magnitudes = (100)3.41/6 = 13.7 times as bright as Polaris
Wiki User
∙ 12y ago
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Which star has the less absolute magnitude rigel or Sirius?
Sirius has less absolute magnitude than Rigel. Sirius is smaller and less luminous than Rigel, but much closer to us, so Sirius appears brighter. Sirius, in fact, is the brightest star in our sky (with the exception of our own star, the sun.) Rigel is still pretty bright, but many times farther away from us than Sirius.
Is Sirius brighter than Venus?
Venus has an apparent magnitude [See related link] of -3.82 when it is opposite from the Sun, whereas Sirius has an apparent magnitude of -1.47. So Venus is always brighter (When seen) than Sirius.
What is Sirius?
Sirius is a binary system, that appears as a single star from EarthSirius A has an absolute magnitude of 1.42Sirius A has an apparent magnitude of -1.46Sirius B has an absolute magnitude of 11.18Sirius B has an apparent magnitude of 8.3See related question for the difference between absolute and apparent.
What is the relationship between brightness and distance of a star?
The amount of light we receive from a star - other things being equal - is inversely proportional to the square of the distance. For example, from a star that is ten times as far from us as another star (of the same type), we will only receive 1/100 of the light that we receive from the closer star. The "actual" brightness of the star is called "absolute magnitude". It is calculated as if all stars were at the same distance, so that we can compare stars directly. The "apparent magnitude" of the star is how bright it appears in our own night sky. Two stars can have the same apparent magnitude even though one star is small, dim and close, while the other star is huge, bright and distant.
What star has the brightest apparent magnitude as seen from earth?
The brightest star as seen from Earth is the sun. The brightest star in the night sky is Sirius.
What is the apperant magnitude of Sirius?
Sirius is actually a binary star system. Sirius A has an apparent magnitude of -1.46 whereas Sirius B has an apparent magnitude of 8.3
How is the star Polaris compared to that of the star Sirius?
Sirius is the brightest star...Polaris is bigger then Sirius, Polaris is 360 to 820 light years away from earth, and Sirius is only 8.6 light years away. The Sirius star is known as the dog constalation, The polaris star is found at the tip and corner of the big dipper and the little dipper
What is the absolute and apparent magnitude of Sirius B?
Sirius B is a faint white dwarf companion of Sirius A It has an apparent magnitude of +8.3 and an absolute magnitude of +11.18
Is Sirius also called the North Star?
No. The North Star is Polaris. Sirius is known as the Dog Star.
What star has a greater magnitude a Rigel or Sirius?
Sirius, which means that Rigel is brighter.
Which star has the less absolute magnitude rigel or Sirius?
Sirius has less absolute magnitude than Rigel. Sirius is smaller and less luminous than Rigel, but much closer to us, so Sirius appears brighter. Sirius, in fact, is the brightest star in our sky (with the exception of our own star, the sun.) Rigel is still pretty bright, but many times farther away from us than Sirius.
What star has greater magnitude then Sirius?
Betelguese
What is the apparent magnitude of the star Sirius A?
-1.4
Can apparent magnitude makes Sirius the brightest star in the night sky?
Yes. Sirius has the greatest apparent visual magnitude of any star in the sky except the sun.
Does an imaginary line drawn from the 2 stars at the front of the Big Dipper lead to Sirius or Polaris?
They point at Polaris.
What are 5 stars in our galaxy?
Sirius, polaris, cygnus, betelgeuse, & rigel
Is Polaris the brightest star?
No. The brightest star in the night sky is Sirius.
