HD 168443
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Serpens |
| Right ascension | 18h 20m 03.93329s |
| Declination | −09° 35′ 44.6146″ |
| Apparent magnitude (V) | 6.92 |
| Characteristics | |
| Spectral type | G6V |
| B−V color index | 0.724±0.014 |
| Astrometry | |
| Radial velocity (Rv) | −48.69±0.10 km/s |
| Proper motion (μ) | RA: −91.792±0.036 mas/yr Dec.: −223.979±0.030 mas/yr |
| Parallax (π) | 25.5913±0.0410 mas |
| Distance | 127.4 ± 0.2 ly (39.08 ± 0.06 pc) |
| Absolute magnitude (MV) | 4.198 |
| Details | |
| Mass | 0.995±0.019 M☉ |
| Radius | 1.51±0.06 R☉ |
| Luminosity | 2.413±0.009 L☉ |
| Surface gravity (log g) | 4.07±0.06 cgs |
| Temperature | 5,491±44 K |
| Metallicity [Fe/H] | +0.04±0.03 dex |
| Rotational velocity (v sin i) | 2.20±0.50 km/s |
| Age | 11.3+1.0 −0.8 Gyr |
| Other designations | |
| BD−09°4692, GJ 4052, HD 168443, HIP 89844, SAO 142228, LTT 7289 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 168443 is an ordinary yellow-hued star in the Serpens Cauda segment of the equatorial constellation of Serpens. It is known to have two substellar companions. With an apparent visual magnitude of 6.92, the star lies just below the nominal lower brightness limit of visibility to the normal human eye. This system is located at a distance of 127 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −48.7 km/s.
This stellar object is a core hydrogen fusing G-type main-sequence star with a classification of G6V, although it is likely evolved with an age of around 11 billion years. It is slightly lower in mass than the Sun but has a radius that is larger by 51%. The star is spinning with a leisurely projected rotational velocity of 2.2 km/s and it has a very inactive chromosphere. It is radiating 2.4 times the luminosity of the Sun from its photosphere at an effective temperature of 5,491 K.