HD 159868
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 17h 38m 59.5269s |
| Declination | −43° 08′ 43.842″ |
| Apparent magnitude (V) | +7.24 |
| Characteristics | |
| Spectral type | G5V |
| Apparent magnitude (J) | 5.941±0.021 |
| Apparent magnitude (H) | 5.567±0.026 |
| Apparent magnitude (K) | 5.535±0.024 |
| B−V color index | 0.714±0.012 |
| Astrometry | |
| Radial velocity (Rv) | −23.80±0.76 km/s |
| Proper motion (μ) | RA: −230.824 mas/yr Dec.: −167.903 mas/yr |
| Parallax (π) | 17.8754±0.0207 mas |
| Distance | 182.5 ± 0.2 ly (55.94 ± 0.06 pc) |
| Absolute magnitude (MV) | +3.63 |
| Details | |
| Mass | 1.123±0.018 M☉ |
| Radius | 1.97±0.04 R☉ R☉ |
| Luminosity | 3.82 L☉ |
| Surface gravity (log g) | 3.96±0.02 cgs |
| Temperature | 5,558±15 K |
| Metallicity [Fe/H] | −0.08±0.01 dex |
| Rotation | 7.26 days |
| Rotational velocity (v sin i) | 2.1 km/s |
| Age | 6.6±0.2 Gyr |
| Other designations | |
| CD−43°11901, GJ 4014, HD 159868, HIP 86375, SAO 228234 | |
| Database references | |
| SIMBAD | data |
HD 159868 is a star in the southern constellation of Scorpius, positioned about 0.3° to the ESE of the bright star Theta Scorpii. With an apparent visual magnitude of +7.24, it is too faint to be visible to the naked eye but can be viewed with a small telescope. The star lies at a distance of 182 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −24 km/s.