HD 18970
Star in the constellation Perseus From Wikipedia, the free encyclopedia
HD 18970 is a class G9.5III[3] (yellow giant) star in the constellation Perseus. Its apparent magnitude is 4.77[2] and it is approximately 211 light years away based on parallax.[1]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 03h 05m 32.41223s[1] |
| Declination | 56° 42′ 20.5858″[1] |
| Apparent magnitude (V) | 4.77[2] |
| Characteristics | |
| Spectral type | G9.5III[3] |
| U−B color index | +0.85[4] |
| B−V color index | +1.02[4] |
| Astrometry | |
| Radial velocity (Rv) | -46.37[5] km/s |
| Proper motion (μ) | RA: -12.72[1] mas/yr Dec.: +70.04[1] mas/yr |
| Parallax (π) | 15.45 ± 0.27 mas[1] |
| Distance | 211 ± 4 ly (65 ± 1 pc) |
| Absolute magnitude (MV) | 0.72[2] |
| Details | |
| Mass | 1.53[6] M☉ |
| Radius | 11[6] R☉ |
| Luminosity | 63.48[2] L☉ |
| Surface gravity (log g) | 2.54[6] cgs |
| Temperature | 4,900[7] K |
| Metallicity [Fe/H] | -0.08[2] dex |
| Rotational velocity (v sin i) | < 1.0[8] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
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