CPD−60°7561, FK5 841, HD 211416, HIP 110130, HR 8502, SAO 255193[8]
Database references
SIMBAD
data
Alpha Tucanae (α Tuc, α Tucanae) is a binary star system in the southern circumpolar constellation of Tucana. With an apparent visual magnitude of 2.86,[2] it can be seen with the naked eye from the southern hemisphere. Using parallax measurements, the distance to this system can be estimated as 184 light-years (56 parsecs). A cool star with a surface temperature of 4300 K, it is 424 times as luminous as the sun and 37 times its diameter. It is 2.5 to 3 times as massive. It is unclear what stage of evolution the star is in.[7]
This is a spectroscopic binary, which means that the two stars have not been individually resolved using a telescope, but the presence of the companion has been inferred from measuring changes in the spectrum of the primary. The orbital period of the binary system is 4197.7 days (11.5 years).[6] The primary component has a stellar classification of K3 III,[3] which indicates it is a giant star that has exhausted the supply of hydrogen at its core and evolved away from the main sequence. It has the characteristic orange hue of a K-type star.
^ abcdeVallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875.
Gaia DR3 record for this source at VizieR.
^ abcdCite error: The named reference clpl4 was invoked but never defined (see the help page).
^ abCite error: The named reference houk1978 was invoked but never defined (see the help page).
^Cite error: The named reference mnras139_341 was invoked but never defined (see the help page).
^ abPasquini, L.; de Medeiros, J. R.; Girardi, L. (2000). "Ca II activity and rotation in F-K evolved stars". Astronomy and Astrophysics. 361: 1011–1022. arXiv:astro-ph/0008109. Bibcode:2000A&A...361.1011P.
^ abCite error: The named reference ncsbo was invoked but never defined (see the help page).
^ abcdeKaler, Jim. "Alpha Tucanae". Stars. University of Illinois. Retrieved 19 October 2013.
^Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
AlphaTucanae (α Tuc, α Tucanae) is a binary star system in the southern circumpolar constellation of Tucana. With an apparent visual magnitude of 2.86...
Beta Tucanae, Latinized from β Tucanae, is a group of six stars which appear to be at least loosely bound into a system in the constellation Tucana. Three...
82 AlphaTucanae Binary star system 2.83 2.81 Delta Capricorni Quadruple star system 2.84 2.78 Gamma Pegasi Star 2.84 Beta Leporis Star 2.84 Alpha Hydri...
clusters to be designated with a Bayer letter; the globular cluster 47 Tucanae (Xi Tucanae) is the only one designated with a Flamsteed number. It contains...
Milky Way. Messier 13 168 Messier 15 166 Palomar 5 152 Messier 75 126 47 Tucanae 120 Messier 68 106 Messier 22 100 ± 10 One of the first star clusters ever...
stragglers have been observed to rotate quickly, with one example in 47 Tucanae observed to rotate 75 times faster than the Sun, which is consistent with...
years. Dabih Mintaka HD 155448 KIC 4150611 1SWASP J093010.78+533859.5 Beta Tucanae Castor HD 139691 TYC 7037-89-1 If Alcor is considered part of the Mizar...
million years: 47 Tucanae, second-brightest globular cluster in the Milky Way, forms 750 million years: Galaxy IOK-1 a Lyman alpha emitter galaxy, forms...
candidate exoplanets. On 23 July 2019, the discovery of the young exoplanet DS Tucanae Ab (HD 222259 Ab) in the ~45 Myr old Tucana-Horologium young moving group...
now are occasionally mistakenly treated as Flamsteed designations. 47 Tucanae, a number assigned by Bode, is a famous example. Full-sky star catalogues...
once around its star, its surface temperature reaches 320 °F (160 °C). DS Tucanae Ab, a Neptune-like exoplanet that orbits a G-type star, it takes 8.1 days...
magnetic star) in Monoceros. Named after K. R. W. Brewer. Butler's Star is BT Tucanae / HD 6090 (a flare star at 1:00:18 / -72°44'35" in the Small Magellanic...
Benedict, G. Fritz (2021-07-01). "Precision Millimeter Astrometry of the $\alpha$ Centauri AB System". The Astronomical Journal. 162 (1): 14. arXiv:2104...
giants. II. Circumstellar absorption lines in the spectrum of alpha Sco B and mass-loss of alpha Sco A". Astronomy and Astrophysics. 70: 227. Bibcode:1978A&A...
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