Astronomy:HD 16028

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Short description: Orange giant star in the constellation Andromeda
HD 16028
Observation data
Equinox J2000.0]] (ICRS)
Constellation Andromeda
Right ascension  02h 35m 38.7415s[1]
Declination +37° 18′ 44.143″[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
Radius37[4] R☉
Luminosity427[1] L☉
Surface gravity (log g)1.10[5] cgs
Temperature4,345[4] K
Metallicity [Fe/H]−0.54[5] dex
Other designations
BD+36°519, SAO 55684, HIP 12072, HR 748
Database references
SIMBADdata

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.

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.[6] The other is even fainter and is separated 45 arcseconds from the primary.[7]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  2. ↑ 2.0 2.1 2.2 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy & Astrophysics 355: L27–L30, Bibcode: 2000A&A...355L..27H. 
  3. ↑ 3.0 3.1 3.2 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. doi:10.1111/j.1365-2966.2008.13596.x. Bibcode: 2008MNRAS.389..869E. 
  4. ↑ 4.0 4.1 Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S. 
  5. ↑ 5.0 5.1 Matsuno, Tadafumi; Starkenburg, Else; Balbinot, Eduardo; Helmi, Amina (2024). "Improving metallicity estimates for very metal-poor stars in the Gaia DR3 GSP-Spec catalog". Astronomy and Astrophysics 685: A59. doi:10.1051/0004-6361/202245762. Bibcode: 2024A&A...685A..59M. 
  6. ↑ Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  7. ↑ "UCAC4 637-009202". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=UCAC4+637-009202. 



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