29 Orionis

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29 Orionis
Orion constellation map.svg
Red circle.svg

Location of 29 Orionis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Orion
Right ascension 05h 23m 56.82768s[1]
Declination −7° 48′ 29.0332″[1]
Apparent magnitude (V) 4.13[2]
Spectral type G8IIIFe-0.5[3]
U−B color index +0.70[4]
B−V color index +0.96[4]
Radial velocity (Rv) -17.68[5] km/s
Proper motion (μ) RA: -14.82[1] mas/yr
Dec.: -45.02[1] mas/yr
Parallax (π) 20.73 ± 0.17[1] mas
Distance 157 ± 1 ly
(48.2 ± 0.4 pc)
Absolute magnitude (MV) 0.73[6]
Mass 2.33[2] M
Radius 10.36[5] R
Luminosity 71[2] L
Surface gravity (log g) 2.44[2] cgs
Temperature 4,852[2] K
Metallicity [Fe/H] -0.25[2] dex
Rotational velocity (v sin i) 1.1[7] km/s
Other designations
e Orionis, BD-07°1064, GC 6646, HIP 25247, HR 1784, HD 35369, SAO 132067
Database references

29 Orionis (29 Ori) is a star in the constellation Orion. A yellow giant of spectral type G8III,[3] it has an apparent magnitude of 4.13[2] and is located around 157 light-years distant from Earth.[1] It has a surface temperature of 4852 K and is 2.33 times as massive as the Sun.[2]

In Bayer's Uranometria, this star is one of two stars (the other, Upsilon Orionis) marking the top of Orion's right boot.[8]


  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c d e f g h Takeda, Yoichi; Sato, Bun'ei; Murata, Daisuke (2008). "Stellar Parameters and Elemental Abundances of Late-G Giants". Publications of the Astronomical Society of Japan. 60 (4): 781–802. arXiv:0805.2434Freely accessible. Bibcode:2008PASJ...60..781T. doi:10.1093/pasj/60.4.781. 
  3. ^ a b Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H. 
  4. ^ a b 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. 
  5. ^ a b Jofré, E.; Petrucci, R.; Saffe, C.; Saker, L.; Artur de la Villarmois, E.; Chavero, C.; Gómez, M.; Mauas, P. J. D. (2015). "Stellar parameters and chemical abundances of 223 evolved stars with and without planets". Astronomy & Astrophysics. 574: A50. arXiv:1410.6422Freely accessible. Bibcode:2015A&A...574A..50J. doi:10.1051/0004-6361/201424474.  Vizier catalog entry
  6. ^ Da Silva, Ronaldo; Milone, André de C.; Rocha-Pinto, Helio J. (2015). "Homogeneous abundance analysis of FGK dwarf, subgiant, and giant stars with and without giant planets". Astronomy & Astrophysics. 580: A24. Bibcode:2015A&A...580A..24D. doi:10.1051/0004-6361/201525770.  Vizier catalog entry
  7. ^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474Freely accessible. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762.  Vizier catalog entry
  8. ^ Wagman, Morton (2003). Lost Stars: Lost, Missing and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas Louis de Lacaille, John Flamsteed, and Sundry Others. Blacksburg, VA: The McDonald & Woodward Publishing Company. p. 513. ISBN 978-0-939923-78-6.