126 Tauri
Observation data
Epoch J2000      Equinox J2000
Constellation Taurus
Right ascension 05h 41m 17.71768s[1]
Declination +16° 32′ 02.9253″[1]
Apparent magnitude (V) 4.836[2]
(5.04 / 6.56)[3]
Characteristics
Spectral type B3 IV[4]
U−B color index -0.64[5]
B−V color index -0.12[5]
Astrometry
Radial velocity (Rv)21.90 ± 0.9[6] km/s
Proper motion (μ) RA: 3.50[1] mas/yr
Dec.: −15.47[1] mas/yr
Parallax (π)5.13 ± 0.81 mas[1]
Distanceapprox. 600 ly
(approx. 190 pc)
Orbit[3]
Period (P)111.02 ± 1.37 yr
Semi-major axis (a)0.245 ± 0.014″
Eccentricity (e)0.661 ± 0.036
Inclination (i)80.5 ± 1.1°
Longitude of the node (Ω)53.2 ± 0.8°
Periastron epoch (T)B 1938.13 ± 1.64
Argument of periastron (ω)
(secondary)		40.9 ± 5.8°
Details
128 Tau A
Mass6.31 ± 0.42[4] M☉
Luminosity2061[4] L☉
Temperature17900[4] K
Other designations
BD+16° 841, HD 37711, HIP 26777, HR 1946, SAO 94759
Database references
SIMBADdata

126 Tauri (126 Tau) is a blue subgiant star in the constellation Taurus. Its apparent magnitude is 4.83. It is also a binary star, with an orbital period of 111 years.[3]

References

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
  2. ^ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
  3. ^ a b c "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 1 August 2017. Retrieved 20 August 2017.
  4. ^ a b c d Hohle, M.M.; Neuhäuser, R.; Schutz, B.F. (2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten. 331 (4): 349. arXiv:1003.2335. Bibcode:2010AN....331..349H. doi:10.1002/asna.200911355. S2CID 111387483.
  5. ^ a b Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.
  6. ^ Kharchenko, N. V.; et al. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889. arXiv:0705.0878. Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776. S2CID 119323941.


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