Epsilon Tucanae

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ε Tucanae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Tucana
Right ascension 23h 59m 55.0s
Declination −65° 34′ 38″
Apparent magnitude (V) +4.49
Distance 373 ± 8[1] ly
(114.4 ± 2.4[1] pc)
Spectral type B9IV
Other designations
HR 9076, HD 224686, CP−66 3819, FK5 903, HIP 118322, SAO 255619, GC 33280

Epsilon Tucanae (ε Tuc, ε Tucanae) is a star in the constellation Tucana.

Epsilon Tucanae is a blue-white B-type subgiant with an apparent magnitude of +4.49. It is approximately 373 light years from Earth.[2] It is around four times as massive as our Sun.[3]

It is the last star in the Hipparcos catalog, HIP 118322, from the Hipparcos (1989–1993) astrometry satellite (see List of stars in the Hipparcos Catalogue).


  1. ^ a b 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. ^ "Epsilon Tucanae - Be Star". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 20 October 2013. 
  3. ^ Levenhagen, R. S.; Leister, N. V. (2006). "Spectroscopic Analysis of Southern B and Be Stars". Monthly Notices of the Royal Astronomical Society 371: 252–62. arXiv:astro-ph/0606149. Bibcode:2006MNRAS.371..252L. doi:10.1111/j.1365-2966.2006.10655.x.