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′ 44.143″[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 mas[1]
Distance	730 ± 20 ly (225 ± 6 pc)
Details
Radius	37[4] R☉
Luminosity	427[1] L☉
Surface gravity (log g)	1.10[5] cgs
Temperature	4,345[4] K
Metallicity [Fe/H]	−0.54[5] dex
Other designations
BD+36°519, SAO 55684, HIP 12072, HR 748
Database references
SIMBAD	data

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]