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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).

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How long does the orbit of sirius a and sirius b take?

The orbit of Sirius A and Sirius B takes about 50.1 years to complete one full revolution around their common center of mass. Sirius A is the brighter and more massive companion, while Sirius B is a white dwarf. Their elliptical orbit brings them as close as 8.2 astronomical units (AU) and as far apart as 31.5 AU over the course of their orbit.


Is sirius a cold?

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.


Is sirius bigger than earth?

Yes. Sirius actually consists of two stars. The main object, Sirius A is not only bigger than Earth but is almost twice the diameter of the sun. The secondary star, Sirius B is a collapsed remnant of a star called a white dwarf. It is slightly smaller than Earth but far denser.


Is Sirius a a white dwarf?

No, but Sirius B is,


Where is Sirius b located in the night sky?

Sirius, which consists of both Sirius A and Sirius B is in the constellation Canis Major, which, if you are looking south, appears below and to the left of Orion. Sirius B itself is too dim to be seen from Earth; the vast majority of the light from Sirius is from Sirius A. Even then, as a binary system, the two stars are too close together for us to see them separately.

Related Questions

How long does the orbit of sirius a and sirius b take?

The orbit of Sirius A and Sirius B takes about 50.1 years to complete one full revolution around their common center of mass. Sirius A is the brighter and more massive companion, while Sirius B is a white dwarf. Their elliptical orbit brings them as close as 8.2 astronomical units (AU) and as far apart as 31.5 AU over the course of their orbit.


Is there a far away planet that orbits Sirius A?

Neither Sirius A nor Sirius B have any known planets.


When will Sirius the star become a Black Dwarf?

Sirius, the brightest star in the night sky, is a binary system consisting of Sirius A and Sirius B. Sirius B, which is a white dwarf, will eventually cool and fade into a black dwarf over an estimated timeframe of trillions of years. However, the universe is not old enough for any black dwarfs to currently exist, including Sirius B. Therefore, Sirius A and B will not become a black dwarf for billions of years, far beyond the current age of the universe.


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.


Is sirius a cold?

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.


Is sirius bigger than earth?

Yes. Sirius actually consists of two stars. The main object, Sirius A is not only bigger than Earth but is almost twice the diameter of the sun. The secondary star, Sirius B is a collapsed remnant of a star called a white dwarf. It is slightly smaller than Earth but far denser.


Is Sirius a a white dwarf?

No, but Sirius B is,


What color is Sirius B?

Sirius B is a white dwarf. As the name suggests, it will appear white.


Where is Sirius b located in the night sky?

Sirius, which consists of both Sirius A and Sirius B is in the constellation Canis Major, which, if you are looking south, appears below and to the left of Orion. Sirius B itself is too dim to be seen from Earth; the vast majority of the light from Sirius is from Sirius A. Even then, as a binary system, the two stars are too close together for us to see them separately.


Is 'Sirius C' real or not?

It is not real. Sirius is a two-star system containing only Sirius A and Sirius B.


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.


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