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HV 888

The red supergiant HV 888 is the yellowish star in the middle of the picture

HV 888 (also known as WOH S140), is a red supergiant star in the Large Magellanic Cloud.[1] It is among the largest known stars. It has a solar radius from over 1,374 to 1,584 times that of the Sun.

It is one of the most luminous of its type. Its luminosity is nearly 300,000 to over 500,000 times that of the luminosity of our Sun.[2][3][4] The effective temperature is estimated to be around 3,500 K. If it was placed at the center of the Solar System, its photosphere would engulf the orbit of Jupiter and possibly even Saturn.

HV 888 is located in the constellation of Dorado with an apparent magnitude of 11.861,[5] It has a diameter of between 1,911,783,600[6] to 2,203,977,600 km.[7]

References

  1. ↑ "HV 888". simbad.u-strasbg.fr. Retrieved 2022-11-16.
  2. ↑ van Loon, Jacco Th; Cioni, Maria-Rosa L.; Zijlstra, Albert A.; Loup, Cecile (2005). "An empirical formula for the mass-loss rates of dust-enshrouded red supergiants and oxygen-rich Asymptotic Giant Branch stars". Astronomy & Astrophysics. 438 (1): 273–289. arXiv:astro-ph/0504379. doi:10.1051/0004-6361:20042555. ISSN 0004-6361. S2CID 16724272.
  3. ↑ Kamath, Devika; Wood, Peter R.; Van Winckel, Hans (2015-12-01). "Optically Visible Post-AGB Stars, Post-RGB Stars and Young Stellar Objects in the Large Magellanic Cloud". Monthly Notices of the Royal Astronomical Society. 454 (2): 1468–1502. arXiv:1508.00670. doi:10.1093/mnras/stv1202. ISSN 0035-8711.
  4. ↑ Davies, Ben; Crowther, Paul A.; Beasor, Emma R. (2018-08-11). "The luminosities of cool supergiants in the Magellanic Clouds, and the Humphreys-Davidson limit revisited". Monthly Notices of the Royal Astronomical Society. 478 (3): 3138–3148. arXiv:1804.06417. doi:10.1093/mnras/sty1302. ISSN 0035-8711.
  5. ↑ Bonanos, A. Z.; Massa, D. L.; Sewilo, M.; Lennon, D. J.; Panagia, N.; Smith, L. J.; Meixner, M.; Babler, B. L.; Bracker, S.; Meade, M. R.; Gordon, K. D. (2009-10-01). "Spitzer SAGE Infrared Photometry of Massive Stars in the Large Magellanic Cloud". The Astronomical Journal. 138 (4): 1003–1021. arXiv:0905.1328. doi:10.1088/0004-6256/138/4/1003. ISSN 0004-6256. S2CID 14056495.
  6. ↑ Kamath, Devika; Wood, Peter R.; Van Winckel, Hans (2015-12-01). "Optically Visible Post-AGB Stars, Post-RGB Stars and Young Stellar Objects in the Large Magellanic Cloud". Monthly Notices of the Royal Astronomical Society. 454 (2): 1468–1502. arXiv:1508.00670. doi:10.1093/mnras/stv1202. ISSN 0035-8711.
  7. ↑ Groenewegen, Martin A. T.; Sloan, Greg C. (2018). "Luminosities and mass-loss rates of Local Group AGB stars and Red Supergiants". Astronomy & Astrophysics. 609: A114. arXiv:1711.07803. doi:10.1051/0004-6361/201731089. ISSN 0004-6361. S2CID 59327105.

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