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Sirius
Sirius is located southeast from the Orion constellation. Sometimes known as the dog star, Sirius is the brightest star in the night sky.
124 Questions
How long does it take Sirius B and Siruis to orbit each other?
About forever. If it were even aimed that direction, which it's not.
Voyager is further from Earth than any physical man-made object ever, and it's still moving away from the Sun faster than any other physical man-made object, so it's in no danger of being overtaken anytime soon.
However, it's still very, very near the Sun by interstellar distance standards.
It takes light from the Sun about 17 hours to reach Voyager 1.
However, Sirius is about 8.3 light years from the Sun ... that is, light from the Sun takes about 8.3 years to reach Sirius. That's about 17,500 times further away than Voyager is, and Voyager's been traveling since 1977. So, quick back of the envelope calculation ... it will take Voyager over 600,000 years to get as far away from the Sun as Sirius is, and as mentioned it's not pointed in the right direction to get to Sirius (or any other nearby star); according to NASA it's headed vaguely in the direction of the constellation Ophiucus.
What is the color of Sirius star?
The next brightest star, as we see it, after Sirius is Canopus. The next nearest star in distance after Sirius is called Luyten 726-8. The next brightest star in Canis Major is Beta Canis Majoris or Murzim/Murzam/Al-Murzim (Arabic).
What is the nickname of the star Sirius?
Sirius is the brightest star in the sky. It is in the constellation of Canis Major, visible in the northern hemisphere during the winter months. Canis Major is also known as the Big Dog, earning the star its nickname -- "the Dog Star."
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.
What was Sirius Black in jail for?
He was sentenced to a life in Azkaban but he escaped in his 12th year in Azkaban.
He turned his Animagus form and escaped
What is the definition of BTU?
One btu will heat a pound of water about one degree Fahrenheit in one hour.
Is Sirius part of The Pleiades?
No. Sirius is part of Canis Major's nose. Winter triangle or the Big Dog.
It can be argued that Harry did, because he SAW Sirius before getting on the Knight Bus. He didn't know then, however, that the dog he saw was Sirius.
He just thought it was a dog.
After he learned who Siruis Black was however,
the first one to see Sirius was Ron.
Peter Pettigrew, disguised as Ron's rat,
Scabbers, led him into the Whomping Willow
and then Harry and Hermione followed.
No, it's just a pattern of stars that someone once thought looked like a scorpion. If you were to move away from earth, all the constallations would look quite different.
In what constellation is Sirius located?
- Sirius is approximately 8.7 light-years away from Earth.
- In order to find Sirius in the night sky, find Orion's Belt, and follow its line of stars down to the left and you will find Sirius.
Sirius A has a spectral type of A1V. So it has a colour of white to white blue.
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.
How would you describe the Sirius?
As seen from Earth, Sirius is the brightest sky in the night sky. It is best on view during the months of winter in the northern hemisphere. It can be found by finding the constellation of Orion, and using Orion's Belt, to follow down low and to Orion's left.
How is the star Polaris compared to that of the star Sirius?
Sirius is the brightest star...Polaris is bigger then Sirius, Polaris is 360 to 820 light years away from earth, and Sirius is only 8.6 light years away. The Sirius star is known as the dog constalation, The polaris star is found at the tip and corner of the big dipper and the little dipper
Sirius is actually a binary star: Sirius A, which is a white main-sequence star and which is accompanied by Sirius B, a white dwarf.
Around 100 years ago it was suggested that Sirius may belong to the Ursa Major moving group. However, more recent analysis of the motion of the stars in this group, and particularly Sirius's age, ha cast doubt on that suggestion. It is now believed that Sirius may be part of the Sirius Supercluster.
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).
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.
From Wikipedia: "The age of the system [Sirius is a double star] is estimated at around 230 million years." So, a fairly young star, at least if compared to typical stars, including our own Sun.
What celebrities were born on December 9?
Mackenzie Crook, Bryant Gumbel, Lech Walesa, Madeline Kahn, Jerry Lee Lewis, Anita Ekberg, Elizabeth Scott, Stanly Kramer, Greer Garson, Gene Autry, Enrico Fermi, Miguel de Cervantes, Josh Farro
What is the surface temperature of the star Sirius?
The temperature is estimated to be 18000 degrees F on the surface.
Harry Potter's hair is described by J.K. Rowling as being 'jet black' and his eye colour is green like his mum.
Why would the star Sirius find that its spectral lines are blue shifted?
The spectral lines of Sirius are blueshifted because the star is moving more or less toward us.
