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It's very difficult to age individual stars, but it is estimated that the Sirius system is about 200 - 300 million years old.
Sirius B became a white dwarf about 120 million years ago.
Big stars like Sirius rarely last more than half a quarter billion years.
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∙ 12y ago
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Is Sirius a cold star?
No. Sirius is far from a cold star. Sirius is actually a binary system about 8.6 light years away. Sirius A is a white main sequence star just over twice the size of the sun. Sirius B is a white dwarf stellar remnant of about 0.978 solar masses. The temperature of the two stars are far higher than that of our sun. The sun is about 5778 Kelvin, Sirius A is almost twice that at 9,940 K and Sirius B is many times that at 25,200 K.
What star is the brigtest of all-stars the sun or the sirius star?
Neither. The Sun only appears bright because it is close. Sirius is far larger and brighter than our Sun. Our Sun is probably in the top 40% of all stars in the Milky Way, while Sirius is probably in the top 5%. But there are many other stars that are far brighter even that Sirius.
How is Sirius star different from all the other objects in the solar system?
Sirius is not part of our Solar System, so it is not appropriate to talk about "other objects in the solar system".
How much would you weigh on Sirius A?
If you weighed 100lb on Earth you would weigh about 5,400 lb for about a millisecond before you were incinerated and turned into vapour. Sirius A is a star about twice the size of our Sun.
Is Sirius A a main sequence star?
Polaris - the current North star is a multiple star system., consisting of the main star and smaller companions. The main star Alpha Ursae Minoris is a bright star, a 6 solar mass supergiant and it is a main sequence star. Orbiting very close to this main star is a white dwarf of roughly 1.5 solar masses. This is not a main sequence star. Orbiting further out is the third companion, a 1.39 solar mass star. This is a main sequence star. There are also two more distant components (α UMi C and α UMi D) - Polaris is thought to be part of an open cluster - I do not know if these later two stars are main sequence or not.
How far apart are Sirius A and Sirius B?
Sirius is a binary star system Sirius A and Sirius B.The distance separating Sirius A from B varies between 8.1 and 31.5 AU. (See related question).
Is 'Sirius C' real or not?
It is not real. Sirius is a two-star system containing only Sirius A and Sirius B.
What star is smaller barnard's or Sirius b?
Sirius BSirius B has a radii of 0.0084 solar radii.Barnard's star has a radii of 0.196 solar radii.
What is the temperature of Sirius a?
Sirius is a binary star. Sirius A has a temperature of about 10,000 K Sirius B has a temperature of about 25,200 K 9,940(a) k 25,200 (b) k 78
What star is smaller Sirius or Barnard's star?
Sirius BSirius B has a radii of 0.0084 solar radii.Barnard's star has a radii of 0.196 solar radii.
Does B Sirius cause Sirius A to wobble?
Sure - the two attract each other. In the case of a double star - as Sirius A and Sirius B - both revolve around their common center of mass.
When is the sirius B star going to burn out?
It already has. Sirius B is a white dwarf, the dense remnant of a dead star. While it is no longer producing energy through fusion, Sirius B still glows with the leftover heat of when it was an active star. Because of the huge amount of heat and relatively small surface area, it will take trillions of years for Sirius B to cool.
Can Sirius b burn hydrogen as fuel?
No. Sirius B is a white dwarf. It is the remnant of a star that used up its supply of hydrogen.
How much longer does sirius b have to live?
Sirius B is a white dwarf, meaning it is already the remnant of a dead star. That star died about 120 million years ago.
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 hot is Sirius?
Sirius is a binary star system.Sirius A has a temperature of about 9,940 KSirius B has a temperature of about 25,200 K
Is Sirius b a high or low mass star?
Sirius B is a white dwarf. So it is low mass compared to other stellar remnants.
