HR 6819

HR 6819, also known as HD 167128 or QV Telescopii (abbreviated QV Tel), is a triple star system in the southern constellation of Telescopium, near the southern constellation boundary with Pavo.^[1]

It is located at a distance of about 1,120 light years from the Sun, and is drifting farther away at a rate of +15 km/s. A May 2020 study reported it to contain a black hole, making it the closest known black hole, and the first one located in a stellar system visible to the naked eye.^[2]

References

↑ Hiltner, W. A.; et al. (July 1969). "MK Spectral Types for Bright Southern OB Stars". The Astrophysical Journal. 157: 313. Bibcode:1969ApJ...157..313H. doi:10.1086/150069.
↑ Rivinius, Th.; Baade, D.; Hadrava, P.; Heida, M.; Klement, R. (2020). "A naked-eye triple system with a nonaccreting black hole in the inner binary". Astronomy & Astrophysics. 637 (L3): 11. arXiv:2005.02541. Bibcode:2020A&A...637L...3R. doi:10.1051/0004-6361/202038020. S2CID 218516688.

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[Hiltner1969-1] Hiltner, W. A.; et al. (July 1969). "MK Spectral Types for Bright Southern OB Stars". The Astrophysical Journal. 157: 313. Bibcode:1969ApJ...157..313H. doi:10.1086/150069.

[Rivinius2020-2] Rivinius, Th.; Baade, D.; Hadrava, P.; Heida, M.; Klement, R. (2020). "A naked-eye triple system with a nonaccreting black hole in the inner binary". Astronomy & Astrophysics. 637 (L3): 11. arXiv:2005.02541. Bibcode:2020A&A...637L...3R. doi:10.1051/0004-6361/202038020. S2CID 218516688.

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