Chi Eridani

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Chi Eridani
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Eridanus
Right ascension 01h 55m 57.47s[1]
Declination −51° 36′ 32.0″[1]
Apparent magnitude (V) 3.70[2]
Spectral type G8IV[3]

Chi Eridani is a binary star[4] in the constellation Hydra. Its apparent magnitude is 3.70.[2] Located around 17.85 parsecs (58.2 ly) distant,[1] the primary is a subgiant of spectral type G8IV,[3] a star that has used up its core hydrogen and has begun to expand.


  1. ^ a b c 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. ^ a b "Chi Eridani". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 12 July 2015. 
  3. ^ a b Torres, C. A. O.; et al. (December 2006). "Search for associations containing young stars (SACY). I. Sample and searching method". Astronomy and Astrophysics 460 (3): 695–708. arXiv:astro-ph/0609258. Bibcode:2006A&A...460..695T. doi:10.1051/0004-6361:20065602. 
  4. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.