Nu Tucanae

Nu Tucanae
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Tucana
Right ascension 22h 33m 00.06240s[1]
Declination −61° 58′ 55.6390″[1]
Apparent magnitude (V) +4.80[2]
Characteristics
Spectral type M4 III[3]
U−B color index +1.73[2]
B−V color index +1.61[2]
Astrometry
Radial velocity (Rv)−3.4±0.8[4] km/s
Proper motion (μ) RA: −3.40[1] mas/yr
Dec.: −0.8[1] mas/yr
Parallax (π)11.24 ± 0.23[1] mas
Distance290 ± 6 ly
(89 ± 2 pc)
Absolute magnitude (MV)+0.16[5]
Other designations
ν Tuc, CPD−62° 6348, FK5 3803, HD 213442, HIP 111310, HR 8582, SAO 255247[6]
Database references
SIMBADdata

Nu Tucanae (ν Tuc, ν Tucanae) is a solitary[7] star in the southern constellation of Tucana.

Nu Tucanae is a M-type red giant with a mean apparent magnitude of +4.91. It is approximately 290 light years from Earth. It is classified as a slow irregular variable and its brightness varies from magnitude +4.75 to +4.93.[8] Periods of 22.3, 24.4, 24.8, 25.1, 25.5, 33.8, 50.6, 80.1, 123.2, and 261.8 days have been reported.[9]

References

  1. 1 2 3 4 5 van Leeuwen, F. (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. 1 2 3 Cousins, A. W. J. (1964), "Photometric Data for Stars in the Equatorial Zone (Seventh List)", Monthly Notes of the Astronomical Society of Southern Africa, 23: 175, Bibcode:1964MNSSA..23..175C.
  3. ↑ Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
  4. ↑ Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.
  5. ↑ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
  6. ↑ "nu. Tuc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-04-20.
  7. ↑ 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.
  8. ↑ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  9. ↑ Tabur, V.; Bedding, T. R.; et al. (2009), "Long-term photometry and periods for 261 nearby pulsating M giants", Monthly Notices of the Royal Astronomical Society, 400 (4): 1945, arXiv:0908.3228, Bibcode:2009MNRAS.400.1945T, doi:10.1111/j.1365-2966.2009.15588.x.
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