HD 16028

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 mas[1]
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

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

  1. ^ a b c d e f g 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. ^ a b c Cite error: The named reference TYCHO was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Eggleton was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference McDonald2012 was invoked but never defined (see the help page).
  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.