RSGC1-F01

RSGC1-F01 is a red supergiant located in the RSGC1 open cluster in the constellation of Scutum. The radius was calculated to be around 1,530[2] times that of the Sun (the radius is calculated by applying the Stefan-Boltzmann law), making it one of the largest stars discovered so far. This corresponds to a volume 3.58 billion times bigger than the Sun. If placed at the center of the Solar System, the photosphere would engulf the orbit of Jupiter.

RSGC1-F01
Open cluster RSGC1 in which RSGC-F01 is located.
Credit: Spitzer
Observation data
Epoch J2000      Equinox J2000
Constellation Scutum
Right ascension 18h 37m 56.31s[1]
Declination −06° 52′ 32.2″[1]
Characteristics
Spectral type M3 / M5[2]
Apparent magnitude (J) 9.748[3]
Apparent magnitude (H) 6.587[3]
Astrometry
Proper motion (μ) RA: −4.569 mas/yr[1]
Dec.: −5.074 mas/yr[1]
Parallax (π)0.9176 ± 0.5816 mas[1]
Distance22,000±2,900 ly
Details
Radius1,530+330
−424[2] R☉
Luminosity335,000±160,000[2] – 380,000[4] L☉
Temperature3,550[2] K
Other designations
RSGC1-F01, 2MASS J18375629-0652322
Database references
SIMBADdata

See also

References
  1. Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. Humphreys, Roberta M.; Helmel, Greta; Jones, Terry J.; Gordon, Michael S. (2020). "Exploring the Mass Loss Histories of the Red Supergiants". The Astronomical Journal. 160 (3): 145. arXiv:2008.01108. Bibcode:2020AJ....160..145H. doi:10.3847/1538-3881/abab15. S2CID 220961677.
  3. Davies, Ben; Figer, Don F.; Law, Casey J.; Kudritzki, Rolf-Peter; Najarro, Francisco; Herrero, Artemio; MacKenty, John W. (2008). "The cool supergiant population of the massive young star cluster RSGC1". The Astrophysical Journal. 676 (2): 1016–1028. arXiv:0711.4757. Bibcode:2008ApJ...676.1016D. doi:10.1086/527350. ISSN 0004-637X.
  4. Emma Bensor (2020). "A new mass-loss rate prescription for red supergiants". Monthly Notices of the Royal Astronomical Society. 492 (4): 5994–6006. arXiv:2001.07222. Bibcode:2020MNRAS.492.5994B. doi:10.1093/mnras/staa255. S2CID 210839222.


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