HD 112028
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 12h 49m 13.7347s |
| Declination | +83° 24′ 46.432″ |
| Apparent magnitude (V) | 5.28 |
| Characteristics | |
| Spectral type | A0 IIsp |
| U−B color index | −0.06 |
| B−V color index | −0.03 |
| Astrometry | |
| Radial velocity (Rv) | +2.3 km/s |
| Proper motion (μ) | RA: −31.517(152) mas/yr Dec.: 20.774(158) mas/yr |
| Parallax (π) | 7.7658±0.1164 mas |
| Distance | 420 ± 6 ly (129 ± 2 pc) |
| Details | |
| Luminosity | 174 L☉ |
| Surface gravity (log g) | 2.88±0.13 cgs |
| Temperature | 9,443±345 K |
| Metallicity [Fe/H] | −0.39±0.22 dex |
| Rotational velocity (v sin i) | 275 km/s |
| Other designations | |
| BD+84 290, HD 112028, HIP 62572, HR 4893, SAO 2102, Struve 1694A | |
| Database references | |
| SIMBAD | data |
HD 112028 is an evolved star in the northern constellation of Camelopardalis. It has spectral peculiarities that have been interpreted as a shell, and also relatively weak magnesium and silicon lines. Its spectral class has been variously assigned between B9 and A2, and its luminosity class between a subgiant and bright giant.
At an angular separation of 21.47″ is the slightly fainter spectroscopic binary HD 112014, consisting of a pair of A-type main sequence stars. HD 112028 and HD 112014 together are known as the binary star Struve 1694.