29 Orionis

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29 Orionis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Orion
Right ascension 05h 23m 56.82768s [1]
Declination −07° 48′ 29.0332″ [1]
Spectral type G8III [1]

29 Orionis (29 Ori) is a star in the constellation Orion. A yellow giant of spectral type G8III, it has an apparent magnitude of 4.14 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 our 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.[3]


  1. ^ a b c d SIMBAD, e Orionis (accessed 2 January 2013)
  2. ^ 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:0805.2434. Bibcode:2008PASJ...60..781T. doi:10.1093/pasj/60.4.781. 
  3. ^ 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.