Sirius is a binary system, that appears as a single star from Earth
See related question for the difference between absolute and apparent.
Sirius is actually two stars, also known as a binary star system. The main star, Sirius A, is a white main sequence star (Class A1V) larger and brighter than our sun. The secondary star, Sirius B is a white dwarf, the small, dense remnant of a dead star.
Earlier astronomers wrote about Sirius being red or red hue. Clearly Sirius is not red or even slightly red, so some controversy exists about what the early astronomers were observing.
It was first thought that Sirius might have changed over time, but given the timescale of only a few thousand years, this was dismissed.
The most plausible explanation is that they were viewing the star near the horizon, giving the impression of being red or another star entirely.
See related link for more information.
Sirius is actually a binary star system.
Sirius A has a spectral type of A1V and is a star on the main sequence.
Sirius B is a white dwarf. Yep
Sirius is a binary system.
Sirius A has a spectral class of A1V [See related questions]
Sirius B has a spectral class of DA2 meaning it is a white dwarf.
It's almost completely hydrogen and helium.
Sirius is the brightest star in the night sky of earth not a galaxy
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.
Not just Sirius - all stars do this. This is due to changes in density in our atmosphere.Not just Sirius - all stars do this. This is due to changes in density in our atmosphere.Not just Sirius - all stars do this. This is due to changes in density in our atmosphere.Not just Sirius - all stars do this. This is due to changes in density in our atmosphere.
Not that we know of.
No, Sirius is not part of our solar system. The only star in our solar system is the sun.
Sirius is Harry's godfather. Sirius Black is Harry's godfather.Harry is sirius's Godson.
It is not real. Sirius is a two-star system containing only 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).
No. Sirius consists of two stars. Sirius A is larger than the sun but is not a giant. Sirius B is a white dwarf,
No, but Sirius B is,
The Alan Parsons Project - Sirius
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.
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
The temperature of Sirius A is about 9,940K (or 9,666.85C).
Sirius takes shape as a dog
what is the sirius surface temperature
No. Sirius black is a human.