HD 31093

HD 31093 (also known as HIP 22573)[7] is a binary star system in the constellation Caelum. HD 31093 is roughly 268 light years distant.[3]

HD 31093
Observation data
Epoch J2000      Equinox J2000
Constellation Caelum
Right ascension  04h 51m 28.21644s[1]
Declination −34° 54′ 22.6341″[1]
Apparent magnitude (V) 5.85[2]
Characteristics
Spectral type A1V + A4V[3]
U−B color index +0.09[2]
B−V color index +0.08[2]
Astrometry
Radial velocity (Rv)+23[4] km/s
Proper motion (μ) RA: 24.90±0.33[1] mas/yr
Dec.: −22.68±0.48[1] mas/yr
Parallax (π)12.17 ± 0.41[1] mas
Distance268 ± 9 ly
(82 ± 3 pc)
Details
HD 31093 A
Mass2.7[3] M☉
Rotational velocity (v sin i)196.8±1.9[5] km/s
HD 31093 B
Mass2.3[3] M☉
Other designations
CD–35° 1962, FK5 2364, HD 31093, HIP 22573, HR 1559, SAO 195357.[6]
Database references
SIMBADdata

References
  1. 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. Vizier catalog entry
  2. Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data, SIMBAD, Bibcode:1986EgUBV........0M
  3. Docobo, J. A.; Andrade, M. (2013). "Dynamical and physical properties of 22 binaries discovered by W. S. Finsen". Monthly Notices of the Royal Astronomical Society. 428 (1): 321–339. Bibcode:2013MNRAS.428..321D. doi:10.1093/mnras/sts045.
  4. Kharchenko, N. V.; Scholz, R.-D.; Piskunov, A. E.; Röser, S.; Schilbach, E. (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.
  5. Díaz, C. G.; et al. (July 2011), "Accurate stellar rotational velocities using the Fourier transform of the cross correlation maximum", Astronomy & Astrophysics, 531: A143, arXiv:1012.4858, Bibcode:2011A&A...531A.143D, doi:10.1051/0004-6361/201016386
  6. "HD 31093 -- Double or multiple star". SIMBAD Astronomical Database. Centre de données astronomiques de Strasbourg. Retrieved 2014-12-26.
  7. "HD 31093, a white main-sequence star in Caelum". www.astrostudio.org. Archived from the original on 2015-04-10. Retrieved 2015-04-05.


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