V433 Aurigae

V433 Aurigae

A light curve for V433 Aurigae, plotted from Hipparcos data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 05h 39m 18.3132s[2]
Declination +29° 12′ 54.788″[2]
Apparent magnitude (V) 6.02–6.06[3]
Characteristics
Spectral type B2IV-V[4]
U−B color index −0.5
B−V color index +0.16
Variable type SPB
Astrometry
Radial velocity (Rv)22.90 ± 1.9[5] km/s
Proper motion (μ) RA: −0.82[6] mas/yr
Dec.: −7.11[6] mas/yr
Parallax (π)1.0114 ± 0.1708 mas[2]
Distanceapprox. 3,200 ly
(approx. 1,000 pc)
Details
Luminosity322[7] L☉
Temperature7400[7] K
Other designations
BD+29° 947, HD 37367, HIP 26606, HR 1924, SAO 77354[4]
Database references
SIMBADdata

V433 Aurigae is a variable star in the constellation Auriga. It is a slowly pulsating B star (SPB) that ranges from apparent magnitude 6.02 to 6.06 over 4.6 days.[3] Using a Hipparcos-derived distance of about 1,060 light-years (324 pc), it shines with a luminosity approximately 322 times that of the Sun and has a surface temperature of 7400 K.[7] However, measurements by Gaia indicate a much higher distance of 3,200 light-years (980 pc).[2]

References

  1. ^ "Hipparcos Tools Interactive Data Access". Hipparcos. ESA. Retrieved 8 December 2021.
  2. ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  3. ^ a b Watson, Christopher (4 January 2010). "V433 Aurigae". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 4 August 2015.
  4. ^ a b "V433 Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-03-21.
  5. ^ Gontcharov, G. A. (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. S2CID 119231169.
  6. ^ a b van Leeuwen, F.; et al. (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.
  7. ^ a b c McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (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.


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