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2 Some facts about Sirius A

• Parallax: 0.379 arcsecs
• Spectral type: A1 V
• Radial velocity: −9 km/s
• Proper motion: 1.339 arcsecs/year
• Apparent visual magnitude: −1.44
• Absolute visual magnitude: 1.45
• Luminosity: 26.1 Solar Luminosities

3 Some facts about Sirius B

• Parallax: 0.379 arcsecs
• Spectral type: White dwarf
• Radial velocity: −9 km/s
• Proper motion: 1.339 arcsecs/year
• Apparent visual magnitude: 8.44
• Absolute visual magnitude: 11.3
• Luminosity: 2.4e−4 solar luminosities
• Surface temperature: 25000 K

4 See also

• List of nearest stars

5 References and external links

• Benest, D., & Duvent, J. L. (1995, July). Is Sirius a triple star? Astronomy and Astrophysics, 299, 621-628. (available at The NASA Astrophysics Data System)

• The NASA Astrophysics Data System
• Sirius: The Star of Isis
• Detailed information on Sirus

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SiriusThis article is about the star. See Sirius (disambiguation) for other uses of the name. Sirius ( α Canis Majoris, also known as the Dog Star is the brightest star (−1. 46m) in the night sky. This star can be seen from every inhabited region of Sirius Cybernetics CorporationThe Sirius Cybernetics Corporation is a fictional company from Douglas Adams' Hitchhiker's Guide to the Galaxy''. In the series, the SCC is responsible for the design and creation of a wide range of robots and labour-saving devices, such as lifts, automat Sirius BlackSirius Black is a fictional character in J. Rowling's Harry Potter series of novels. Sirius Black was first mentioned in the first book, as a means of foreshadowing, with no information given about him except that he lent Hagrid a flying motorcycle. His c Sirius Satellite RadioSirius Satellite Radio is a satellite radio ( DARS) service in the United States that provides 65 streams of music and 55 streams of sports, news and entertainment. The streams are broadcast from three satellites in an elliptical geosynchronous orbit abov Sirius (disambiguation)Sirius may refer to several topics: Sirius (α Canis Major, also known as the Dog Star is the brightest star (-1. 46m) in the night sky. Sirius (1944) is also the title of a science fiction novel by Olaf Stapledon about a dog artificially developed t Sirius Systems TechnologySirius Systems Technology, computer company in Scotts Valley, CA, USA. It was founded by Chuck Peddle and Chris Fish. In 1982 Sirius bought Victor Business Systems, known for its calculator and cash register, changing its name in Victor Technologies. Sirius (novel) Sirius (planet)