Epsilon 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 | |
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 the 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).
References
- 1 2 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
- ↑ "Epsilon Tucanae - Be Star". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 20 October 2013.
- ↑ Levenhagen, R. S.; Leister, N. V. (2006). "Spectroscopic Analysis of Southern B and Be Stars" (PDF). 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.
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