and how far is it
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http://lmgtfy.com/?q=sirius+star
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Sirius is actually a double star system consisting of two Stars - Sirius A and Sirius B.
The mass of Sirius A is 2.02 solar masses (4.018 x 1030 kg).
The mass of Sirius B is 0.978 solar masses (1.945 x 1030 kg).
The mass of Sirius A is 2.02 solar masses (4.018 x 1030 kg).
The mass of Sirius B is 0.978 solar masses (1.945 x 1030 kg).