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Rigel, an aa kent bi its Bayer designation Beta Orionis (β Ori, β Orionis), is the brichtest starn in the constellation Orion an the seivent brichtest starn in the nicht sky, wi veesual magnitude 0.13.

Rigel, Beta Ori
Orion constellation map.svg

Rigel in the constellation Orion
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Orion
A
Richt ascension 05h 14m 32.27210s[1]
Declination −08° 12′ 05.8981″[1]
Apparent magnitude (V) 0.13[2] (0.05 - 0.18[3])
B
Richt ascension 05h 14m 32.049s[4]
Declination −08° 12′ 14.78″[4]
Apparent magnitude (V) 6.67[5]
Chairactereestics
A
Evolutionar stage Blue supergiant
Spectral type B8 Ia[6]
U−B colour index −0.66[7]
B−V colour index −0.03[7]
Variable teep Alpha Cygni[8]
B
Evolutionar stage Spectroscopic binary
Spectral type B9V + B9V[9]
U−B colour index −0.66[7]
B−V colour index −0.03[7]
Variable teep Alpha Cygni[8]
Astrometry
Radial velocity (Rv)17.8±0.4[10] km/s
Proper motion (μ) RA: +1.31[1] mas/yr
Dec.: +0.50[1] mas/yr
Parallax (π)3.78 ± 0.34[1] mas
Distance860 ± 80 ly
(260 ± 20 pc)
Absolute magnitude (MV)-7.84[11]
Orbit[5]
PrimarBa
CompanionBb
Period (P)9.860 days
Eccentricity (e)0.1
Semi-amplitude (K1)
(primar)
25.0 km/s
Semi-amplitude (K2)
(seicontar)
32.6 km/s
Details
A
Mass23[12] M
Radius78.9±7.4[13] R
Luminosity (bolometric)1.20+0.25
−0.21
×105[13] L
Surface gravity (log g)1.75±0.10[12] cgs
Temperatur12100±150[12] K
Metallicity [Fe/H]−0.06±0.10[6] dex
Rotational velocity (v sin i)25±3[12] km/s
Age8±1[6] Myr
Ba
Mass3.84[9] M
Bb
Mass2.94[9] M
Ither designations
Rigel, Algebar, Elgebar, β Ori, 19 Ori, HD 34085, HR 1713, HIP 24436, SAO 131907[14]
Database references
SIMBADdata

ReferencesEedit

  1. 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (November 2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752 . Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  2. 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: 0. Bibcode:2002yCat.2237....0D. 
  3. Guinan, E. F.; Eaton, J. A.; Wasatonic, R.; Stewart, H.; Engle, S. G.; McCook, G. P. (2010). "Times-Series Photometry & Spectroscopy of the Bright Blue Supergiant Rigel: Probing the Atmosphere and Interior of a SN II Progenitor". Proceedings of the International Astronomical Union. 5: 359. Bibcode:2010HiA....15..359G. doi:10.1017/S1743921310009798. 
  4. 4.0 4.1 DENIS Consortium (2005). "VizieR Online Data Catalog: The DENIS database (DENIS Consortium, 2005)". VizieR On-line Data Catalog: B/denis. Originally published in: 2005yCat.2263....0T. 1. Bibcode:2005yCat....102002D. 
  5. 5.0 5.1 Sanford, Roscoe F. (1942). "The Spectrographic Orbit of the Companion to Rigel". Astrophysical Journal. 95: 421. Bibcode:1942ApJ....95..421S. doi:10.1086/144412. 
  6. 6.0 6.1 6.2 Przybilla, N.; et al. (January 2006). "Quantitative spectroscopy of BA-type supergiants". Astronomy and Astrophysics. 445 (3): 1099–1126. arXiv:astro-ph/0509669 . Bibcode:2006A&A...445.1099P. doi:10.1051/0004-6361:20053832. 
  7. 7.0 7.1 7.2 7.3 Nicolet, B. (1978). "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System". Astronomy and Astrophysics Supplement Series. 34: 1–49. Bibcode:1978A&AS...34....1N. 
  8. 8.0 8.1 Moravveji, Ehsan; Moya, Andres; Guinan, Edward F. (April 2012). "Asteroseismology of the nearby SN-II Progenitor: Rigel. Part II. ε-mechanism Triggering Gravity-mode Pulsations?". The Astrophysical Journal. 749 (1): 74–84. arXiv:1202.1836 . Bibcode:2012ApJ...749...74M. doi:10.1088/0004-637X/749/1/74. 
  9. 9.0 9.1 9.2 Tokovinin, A. A. (1997). "MSC - a catalogue of physical multiple stars". Astronomy & Astrophysics Supplement Series. 124: 75. Bibcode:1997A&AS..124...75T. doi:10.1051/aas:1997181. 
  10. Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  11. Shultz, M.; Wade, G. A.; Petit, V.; Grunhut, J.; Neiner, C.; Hanes, D.; MiMeS Collaboration (2014). "An observational evaluation of magnetic confinement in the winds of BA supergiants". Monthly Notices of the Royal Astronomical Society. 438 (2): 1114. arXiv:1311.5116 . Bibcode:2014MNRAS.438.1114S. doi:10.1093/mnras/stt2260. 
  12. 12.0 12.1 12.2 12.3 Przybilla, N. (2010). "Mixing of CNO-cycled matter in massive stars". Astronomy and Astrophysics. 517: A38. arXiv:1005.2278 . Bibcode:2010A&A...517A..38P. doi:10.1051/0004-6361/201014164. 
  13. 13.0 13.1 Moravveji, Ehsan; Guinan, Edward F.; Shultz, Matt; Williamson, Michael H.; Moya, Andres (March 2012). "Asteroseismology of the nearby SN-II Progenitor: Rigel. Part I. The MOST High-precision Photometry and Radial Velocity Monitoring". The Astrophysical Journal. 747 (1): 108–115. arXiv:1201.0843 . Bibcode:2012ApJ...747..108M. doi:10.1088/0004-637X/747/2/108. 
  14. "SIMBAD Astronomical Database". Results for Rigel. Retrieved 2008-04-10. 

Coordinates:   05h 14m 32.272s, −08° 12′ 05.91″