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Sirius is a binary system, that appears as a single star from Earth
- Sirius A has an absolute magnitude of 1.42
- Sirius A has an apparent magnitude of -1.46
- Sirius B has an absolute magnitude of 11.18
- Sirius B has an apparent magnitude of 8.3
See related question for the difference between absolute and apparent.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoSirius 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.
Wiki User
∙ 13y agoEarlier 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.
Wiki User
∙ 12y agoSirius 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
Wiki User
∙ 14y agoSirius 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.
Wiki User
∙ 11y agoIt's almost completely hydrogen and helium.
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Is Sirius A a nearby galaxy?
Sirius is the brightest star in the night sky of earth not a galaxy
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.
Why is Sirius known as the Dog Star?
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.
Does Sirius have exoplanets?
Not that we know of.
Is Sirius part of our solar system?
No, Sirius is not part of our solar system. The only star in our solar system is the sun.
What relation is Sirius to Harry Potter?
Sirius is Harry's godfather. Sirius Black is Harry's godfather.Harry is sirius's Godson.
Is 'Sirius C' real or not?
It is not real. Sirius is a two-star system containing only Sirius A and Sirius B.
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 a giant?
No. Sirius consists of two stars. Sirius A is larger than the sun but is not a giant. Sirius B is a white dwarf,
Is Sirius a a white dwarf?
No, but Sirius B is,
What was name of the Chicago Bulls 2010-11 Intro Song?
The Alan Parsons Project - Sirius
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.
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 a?
The temperature of Sirius A is about 9,940K (or 9,666.85C).
What is sirius's formation?
Sirius takes shape as a dog
What is Sirius Surface temperature?
what is the sirius surface temperature
Is Sirius black a dementor?
No. Sirius black is a human.
