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Sirius is actually a binary star system, which means there are two stars (A & B).

Sirius A is 25 times more luminous that our Sun. It is estimated to be twice as large as our Sun.

It is a type A star and is thus classified as a between Sub Giant and Giant.

Sirius B is a white dwarf and has the mass of the Sun but the size of the Earth.

Both stars are spherical in shape.

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Q: What is the size and color of the star Sirius?
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What is the color of Sirius?

Sirius is actually a binary star system.Sirius A is a type A1V star so has a colour of Blue White -> BlueSirius B is a white dwarf.


Is the sirius star 10 times bigger then the sun?

No. In terms of diameter Sirius is 1.7 times the size of the sun.


What is the size of the Sirius (A) star?

Multiple questions. See related questions.


How do you get the scale?

If Our Star Were the size of a Basketball, Sirius A (Main Sequence) Would be a size of A Teddy Bear.


How do you do scale?

If Our Star Were the size of a Basketball, Sirius A (Main Sequence) Would be a size of A Teddy Bear.


What is sirius A named after?

Sirius was named after the word 'blazing' which fits because it is the brightest star in the night sky AND twice the size and brightness


Which star is the biggest star known?

The biggest star that we know of is a red hypergiant called: VY Canis Majoris at 2,100 times the size of our Sun. VY Canis Majoris is in the same constellation as Sirius (The Dog Star). The sun is the star with the largest apparent size because it is the closest. Sirius (The Dog Star) is a binary star and the brightest star in the sky, other than the sun.


Is the sun sirius a supergiant?

No. Sirius is actually two stars. The main body, Sirius A, is a fairly large star, larger than the sun, but it is nowhere near the size of a supergiant. Sirius B is a white dwarf, a small, dense remnant of a star that is, int his case, slightly smaller than Earth.


What star is the brightest one?

The brightest star of all stars is Sirius, the Dog Star. It is more than three times the size of our sun; and is about nine light years away. Sirius is seen best in early March, in the southern sky.


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 the Sirius star extremely hot?

Yes - Sirius is a blue-white star - the hottest type of star there is.


Which star is called the dog star?

the dog star is called sirius and is located south west of Orion belts in the southern hemisphere