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HD 16028

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HD 16028
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda[1]
Right ascension 02h 35m 38.7415s[2]
Declination +37° 18′ 44.143″[2]
Apparent magnitude (V) 5.71[3]
Characteristics
Spectral type K3III[4]
B−V color index 1.41[3]
Astrometry
Radial velocity (Rv)−5.48±0.20[2] km/s
Proper motion (μ) RA: −1.454±0.217[2] mas/yr
Dec.: −13.822±0.177[2] mas/yr
Parallax (π)4.4409±0.1180 mas[2]
Distance730 ± 20 ly
(225 ± 6 pc)
Details
Radius37[5] R☉
Luminosity427[2] L☉
Surface gravity (log g)1.10[6] cgs
Temperature4,345[5] K
Metallicity [Fe/H]−0.54[6] 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.[3] Located approximately 225 parsecs (730 ly) distant,[2] it is an orange giant of spectral type K3III,[4] 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,[4] but parallax measured by Gaia yields a much greater distance for this star in comparison to HD 16028.[7] The other is even fainter and is separated 45 arcseconds from the primary.[8]

References

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  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
  2. 1 2 3 4 5 6 7 8 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. 1 2 3 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.
  4. 1 2 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. S2CID 14878976.
  5. 1 2 Stassun, Keivan G.; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467.
  6. 1 2 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. arXiv:2212.11639. Bibcode:2024A&A...685A..59M. doi:10.1051/0004-6361/202245762.
  7. ↑ 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.
  8. ↑ "UCAC4 637-009202". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved January 3, 2019.
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