06h 45m 08.9173s, −16° 42′ 58.017″

He was sentenced to a life in Azkaban but he escaped in his 12th year in Azkaban.

He turned his Animagus form and escaped

One btu will heat a pound of water about one degree Fahrenheit in one hour.

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.

Sirius A has a spectral type of A1V. So it has a colour of white to white blue.

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.

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.

it will go BOOM

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

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.

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

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.

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."

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).

The spectral lines of Sirius are blueshifted because the star is moving more or less toward us.

It's a star. The entire thing is literally on fire.