LB-1
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LB-1 is a binary star system in the constellation Gemini. In 2019, a paper in Nature proposed that the system contained an unusually massive stellar black hole outside of ordinary single stellar evolution parameters. However, analyses in 2020 found the original 2019 conclusion to be incorrect. Some researchers now believe the system consists of a stripped B-type star and a massive rapidly rotating Be star.
Wikidata facts
- Distance from Earth
- 4600
- Mass
- 2.636
Show 9 more facts
- right ascension
- 92.9544837984
- declination
- 22.8257463091
- parallax
- 0.4403
- catalog code
- USNO-A2.0 1125-03559840
- color index
- 0.28
- age estimated by a dating method
- 35000000
- right ascension component of proper motion
- -0.067
- declination component of proper motion
- -1.889
- apparent magnitude
- 11.48
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~5 min read
Article
5 sectionsContents
- Star
- Unseen companion
- See also
- References
- External links
LB-1 is a binary star system in the constellation Gemini. In 2019, a paper in Nature proposed that the system contained an unusually massive stellar black hole outside of ordinary single stellar evolution parameters. However, analyses in 2020 found the original 2019 conclusion to be incorrect. Some researchers now believe the system consists of a stripped B-type star and a massive rapidly rotating Be star.
==Star== The optically observed star, LB-1 A, or , is a B-type star nine times the mass of the Sun and located at least from Earth. It was found to exhibit radial velocity variations by Chinese astronomers using the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) and the radial-velocity method to search for such wobbly stars.