HD 85945
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ursa Major |
| Right ascension | 09h 57m 13.61s |
| Declination | +57° 25′ 05.54″ |
| Apparent magnitude (V) | 5.959±0.009 |
| Characteristics | |
| Evolutionary stage | Horizontal branch |
| Spectral type | G6III:Fe-0.5 |
| Apparent magnitude (B) | 6.854±0.015 |
| Apparent magnitude (G) | 5.733 |
| Apparent magnitude (J) | 4.513±0.028 |
| Apparent magnitude (H) | 4.141±0.036 |
| Apparent magnitude (K) | 3.978±0.3 |
| B−V color index | 0.895 |
| Astrometry | |
| Radial velocity (Rv) | −46.55±0.12 km/s |
| Proper motion (μ) | RA: 31.347 mas/yr Dec.: -61.766 mas/yr |
| Parallax (π) | 7.4137±0.024 mas |
| Distance | 432.08 ly (132.54 pc) |
| Absolute magnitude (MV) | 0.16 |
| Details | |
| Mass | 2.5 M☉ |
| Radius | 10.28±0.14 R☉ |
| Luminosity | 77.62 L☉ |
| Surface gravity (log g) | 2.6866 cgs |
| Temperature | 5281±22 K |
| Metallicity [Fe/H] | –0.4 dex |
| Rotational velocity (v sin i) | 7.53 km/s |
| Age | 660.7 Myr |
| Other designations | |
| BD+58 1224, Gaia DR2 1046383298937140864, Gaia DR3 1046383298937140864, HIP 48802, HR 3922, PPM 32387, TIC 377368616, TYC 3817-1649-1, GSC 03817-01649, IRAS 09537+5739 | |
| Database references | |
| SIMBAD | data |
HD 85945 (HR 3922) is a star in the constellation Ursa Major. It is a yellow giant star with a spectral type of G6III:Fe-0.5. Based on information from Gaia DR3, it is located 132.54 parsecs (432.3 ly) from Earth and is moving towards Earth at a velocity of 47 km/s. It has an apparent magnitude of 5.96, which makes it faintly visible to the naked eye.