HR 5171
HR 5171 is a yellow hypergiant star , and the largest of its type. Its size is over 1,300 (or 1,500) times larger and 630,000 times brighter than the Sun . It is orbited by a smaller yellow hypergiant and a blue star.
References
1 2 Vanzi, L.; Curé, M.; Arcos, C.; Whitelock, P. A.; Tekola, A. G.; Oudmaijer, R. D.; Otero, S.; Nardetto, N.; Lobel, A. (2014-03-01). "The yellow hypergiant HR 5171 A: Resolving a massive interacting binary in the common envelope phase" . Astronomy & Astrophysics . 563 : A71. arXiv :1401.2628 . Bibcode :2014A& A...563A..71C . doi :10.1051/0004-6361/201322421 . ISSN 1432-0746 . S2CID 52108686 .
↑ Sanchez-Bermudez, J.; Mohamed, S.; Millour, F.; Meilland, A.; Hofmann, K.-H.; Wit, W. J. de; Alberdi, A.; Marcaide, J. M.; Guirado, J. C. (2017-10-01). "Multi-epoch VLTI-PIONIER imaging of the supergiant V766 Cen - Image of the close companion in front of the primary" . Astronomy & Astrophysics . 606 : L1. doi :10.1051/0004-6361/201731569 . ISSN 1432-0746 . S2CID 54740936 .