Coordinates: Sky map 05h 55m 10.3053s, +07° 24′ 25.426″ Betelgeuse, an aw designatit Alpha Orionis (α Orionis, abbreviatit Alpha Ori, α Ori), is the nint-brichtest starn in the nicht sky an seicont-brightest in the constellation o Orion.

Map of the constellation Orion
Red circle.svg
Betelgeuse (circled) in the constellation Orion
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Orion
Richt ascension 05h 55m 10.30536s[1]
Declination +07° 24′ 25.4304″[1]
Evolutionar stage Reid supergiant
Spectral type M1–M2 Ia–ab[2]
Apparent magnitude (V) 0.50[3] (0.0 - 1.3[4])
Apparent magnitude (J) −3.00[5]
Apparent magnitude (K) −4.05[5]
U−B colour index +2.06[3]
B−V colour index +1.85[3]
Variable teep SRc[4]
Radial velocity (Rv)+21.91[6] km/s
Proper motion (μ) RA: 26.42 ± 0.25[7] mas/yr
Dec.: 9.60 ± 0.12[7] mas/yr
Parallax (π)4.51 ± 0.80[7] mas
[7] pc
Absolute magnitude (MV)−5.85[8]
[9] M
Radius887 ± 203[10], 955±217[9] R
Luminosity90000150000[11] L
Surface gravity (log g)−0.5[12] cgs
Temperatur3590[9] K
Metallicity [Fe/H]+0.05[13] dex
Rotational velocity (v sin i)5[14] km/s
Age8.0 – 8.5[10] Myr
Ither designations
Betelgeuse, α Ori, 58 Ori, HR 2061, BD+7°1055, HD 39801, FK5 224, HIP 27989, SAO 113271, GC 7451, CCDM J05552+0724AP, AAVSO 0549+07
Database references


  1. 1.0 1.1 van Leeuwen, F (November 2007). "Hipparcos, the New Reduction". Astronomy and Astrophysics. VizieR: Centre de Données astronomiques de Strasbourg. 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  2. Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
  3. 3.0 3.1 3.2 Nicolet, B. (1978). "Catalogue of Homogeneous Data in the UBV Photoelectric Photometric System". Astronomy & Astrophysics. 34: 1–49. Bibcode:1978A&AS...34....1N.
  4. 4.0 4.1 Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  5. 5.0 5.1 Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  6. Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272.
  7. 7.0 7.1 7.2 7.3 Harper, G. M.; Brown, A.; Guinan, E. F.; O'Gorman, E.; Richards, A. M. S.; Kervella, P.; Decin, L. (2017). "An Updated 2017 Astrometric Solution for Betelgeuse". The Astronomical Journal. 154: 11. arXiv:1706.06020. Bibcode:2017AJ....154...11H. doi:10.3847/1538-3881/aa6ff9.
  8. Harper, Graham M.; Brown, Alexander; Guinan, Edward F. (April 2008). "A New VLA-Hipparcos Distance to Betelgeuse and its Implications" (PDF). The Astronomical Journal. 135 (4): 1430–40. Bibcode:2008AJ....135.1430H. doi:10.1088/0004-6256/135/4/1430. Retrieved 10 July 2010.
  9. 9.0 9.1 9.2 Neilson, H. R.; Lester, J. B.; Haubois, X. (December 2011). "Weighing Betelgeuse: Measuring the Mass of α Orionis from Stellar Limb-darkening". Astronomical Society of the Pacific. 9th Pacific Rim Conference on Stellar Astrophysics. Proceedings of a conference held at Lijiang, China in 14–20 April 2011. ASP Conference Series, Vol. 451: 117. arXiv:1109.4562. Bibcode:2010ASPC..425..103L.
  10. 10.0 10.1 Dolan, Michelle M.; Mathews, Grant J.; Lam, Doan Duc; Lan, Nguyen Quynh; Herczeg, Gregory J.; Dearborn, David S. P. (2016). "Evolutionary Tracks for Betelgeuse". The Astrophysical Journal. 819: 7. arXiv:1406.3143v2. Bibcode:2016ApJ...819....7D. doi:10.3847/0004-637X/819/1/7.
  11. Smith, Nathan; Hinkle, Kenneth H.; Ryde, Nils (March 2009). "Red Supergiants as Potential Type IIn Supernova Progenitors: Spatially Resolved 4.6 μm CO Emission Around VY CMa and Betelgeuse". The Astronomical Journal. 137 (3): 3558–3573. arXiv:0811.3037. Bibcode:2009AJ....137.3558S. doi:10.1088/0004-6256/137/3/3558.
  12. Lobel, Alex; Dupree, Andrea K. (2000). "Modeling the Variable Chromosphere of α Orionis" (PDF). The Astrophysical Journal. 545 (1): 454–74. Bibcode:2000ApJ...545..454L. doi:10.1086/317784. Retrieved 10 July 2010.
  13. Ramírez, Solange V.; Sellgren, K.; Carr, John S.; Balachandran, Suchitra C.; et al. (July 2000). "Stellar Iron Abundances at the Galactic Center" (PDF). The Astrophysical Journal. 537 (1): 205–20. arXiv:astro-ph/0002062. Bibcode:2000ApJ...537..205R. doi:10.1086/309022. Retrieved 9 July 2010.
  14. Kervella, P.; Verhoelst, T.; Ridgway, S. T.; Perrin, G.; Lacour, S.; et al. (September 2009). "The Close Circumstellar Environment of Betelgeuse. Adaptive Optics Spectro-imaging in the Near-IR with VLT/NACO". Astronomy and Astrophysics. 504 (1): 115–25. arXiv:0907.1843. Bibcode:2009A&A...504..115K. doi:10.1051/0004-6361/200912521.