Taygeta

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Taygeta, 19 Tau
M45map.jpg
Taygeta is the bright star at the top right of the map.
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Taurus
Right ascension 03h 45m 12.49578s[1]
Declination 24° 28′ 02.2097″[1]
Apparent magnitude (V) 4.30[2]
Characteristics
U−B color index -0.48[3]
B−V color index -0.12[3]
Astrometry
Radial velocity (Rv) 10.1[2] km/s
Proper motion (μ) RA: 21.24 ± 0.38[1] mas/yr
Dec.: -40.56 ± 0.35[1] mas/yr
Parallax (π) 7.97 ± 0.33[1] mas
Distance 440 ly
(135 pc)
Details
Taygeta A
Mass 4.5[4] M
Luminosity 600[4] L
Taygeta B
Mass 3.2[4] M
Luminosity 150[4] L
Other designations
19 Tauri, HR 1145, HD 23338, BD+24 547, HIP 17531, SAO 76140, GC 4486, BDS 1848, CCDM 03452+2429
Database references
SIMBAD data

Coordinates: Sky map 03h 45m 12.49578s, +24° 28′ 02.2097″ Taygeta (19 Tauri) is a triple star system in the constellation Taurus and a member of the Pleiades star cluster. It also has the little-used Bayer designation q Tauri. It is approximately 440 light years from Earth.

The primary component, Taygeta A, is a blue-white B-type subgiant with an apparent magnitude of +4.30. It is a spectroscopic binary, whose component stars have magnitudes of +4.6 and +6.1. They are separated by 0.012 arcseconds and complete one orbit every 1313 days. They have an 8th magnitude companion, Taygeta B, 69 arcseconds away.

Taygeta is a suspected variable star. It was once reported to be variable,[5] but has since been measure to be one of the least variable of stars.[6][7]

See also[edit]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752free to read. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b "SIMBAD query result: TAYGETA". Centre de Données astronomiques de Strasbourg. Retrieved 2014-08-18. 
  3. ^ a b Penston M.J. (1973). "Photoelectric UBV observations made on the Palomar 20-inch telescope" (PDF). Mon. Not. R. Astron. Soc. 164 (2): 133. Bibcode:1973MNRAS.164..133P. doi:10.1093/mnras/164.2.133. 
  4. ^ a b c d Professor James B. (Jim) Kaler. "TAYGETA (19 Tauri)". University of Illinois. Retrieved 2014-08-18. 
  5. ^ 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. 
  6. ^ Percy, John R.; Wilson, Joseph B. (2000). "Another Search for Maia Variable Stars". The Publications of the Astronomical Society of the Pacific. 112 (772): 846. Bibcode:2000PASP..112..846P. doi:10.1086/316577. 
  7. ^ Adelman, S. J. (2001). "Research Note Hipparcos photometry: The least variable stars". Astronomy and Astrophysics. 367: 297. Bibcode:2001A&A...367..297A. doi:10.1051/0004-6361:20000567. 

External links[edit]