HD 16028

HD 16028 is a star in the constellation Andromeda. Its apparent magnitude is 5.71.[2] Located approximately 225 parsecs (730 ly) distant,[1] it is an orange giant of spectral type K3III,[3] a star that has used up its core hydrogen and has expanded.

HD 16028
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension  02h 35m 38.7415s[1]
Declination +37° 18′ 44.1425″[1]
Apparent magnitude (V) 5.71[2]
Characteristics
Spectral type K3III[3]
B−V color index 1.41[2]
Astrometry
Radial velocity (Rv)−5.48±0.20[1] km/s
Proper motion (μ) RA: −1.454±0.217[1] mas/yr
Dec.: −13.822±0.177[1] mas/yr
Parallax (π)4.4409 ± 0.1180[1] mas
Distance730 ± 20 ly
(225 ± 6 pc)
Details[4]
Luminosity299.05 L☉
Temperature4,371 K
Other designations
BD+36° 519, SAO 55684, HIP 12072, HR 748.
Database references
SIMBADdata

Double star catalogues list two stars as optical companions. One has a magnitude of 10.9 and is separated by 16.9 arcseconds. It has been suggested it is related to the primary,[3] but parallax measured by Gaia yields a much greater distance for this star in comparison to HD 16028.[5] The other is even fainter and is separated 45 arcseconds from the primary.[6]

References
  1. 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.
  2. Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy & Astrophysics, 355: L27–L30, Bibcode:2000A&A...355L..27H.
  3. Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.
  4. McDonald, I.; Zijlstra, A. A.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society, 427: 343, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x.
  5. 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.
  6. "UCAC4 637-009202". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved January 3, 2019.


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