Astronomy:HD 37646
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Short description: Double star in the constellation Auriga
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[1] mas |
| Distance | approx. 610 ly (approx. 190 pc) |
| Details | |
| HD 37646 A | |
| Luminosity | 129[5] L☉ |
| Temperature | 11,733[5] K |
| Rotational velocity (v sin i) | 130[6] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 37646 is a double star in the northern constellation of Auriga. The pair have an angular separation of 26.005″.[3]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V
- ↑ 2.0 2.1 2.2 Tolbert, Charles Ray (May 1964), "A UBV Study of 94 Wide Visual Binaries", Astrophysical Journal 139: 1105, doi:10.1086/147852, Bibcode: 1964ApJ...139.1105T
- ↑ 3.0 3.1 3.2 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E
- ↑ 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. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G.
- ↑ 5.0 5.1 McDonald, I. et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society 427 (1): 343–57, doi:10.1111/j.1365-2966.2012.21873.x, Bibcode: 2012MNRAS.427..343M
- ↑ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (July 2002), "Rotational Velocities of B Stars", The Astrophysical Journal 573 (1): 359–365, doi:10.1086/340590, Bibcode: 2002ApJ...573..359A
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