HD 37646

HD 37646
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 05h 41m 20.97707s[1]
Declination +29° 29′ 14.6958″[1]
Apparent magnitude (V) 6.43[2] (6.38/7.16)[3]
Characteristics
Spectral type B8IV + B9.5V[3]
U−B color index −0.39[2]
B−V color index −0.11[2]
Astrometry
Radial velocity (Rv)18.00±4.3[4] km/s
Proper motion (μ) RA: +15.94[1] mas/yr
Dec.: −26.95[1] mas/yr
Parallax (π)5.37 ± 0.81 mas[1]
Distanceapprox. 610 ly
(approx. 190 pc)
Details
HD 37646 A
Luminosity129[5] L☉
Temperature11,733[5] K
Rotational velocity (v sin i)130[6] km/s
Other designations
BD+29° 953, HD 37646, HIP 26781, HR 1945, SAO 77393.
Database references
SIMBADdata

HD 37646 is a double star in the northern constellation of Auriga. The pair have an angular separation of 26.005″.[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. ^ a b c Tolbert, Charles Ray (May 1964), "A UBV Study of 94 Wide Visual Binaries", Astrophysical Journal, 139: 1105, Bibcode:1964ApJ...139.1105T, doi:10.1086/147852
  3. ^ a b c 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, S2CID 14878976
  4. ^ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
  5. ^ a b McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352
  6. ^ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (July 2002), "Rotational Velocities of B Stars", The Astrophysical Journal, 573 (1): 359–365, Bibcode:2002ApJ...573..359A, doi:10.1086/340590
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