| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Serpens |
| Right ascension | 18h 20m 03.933288s[1] |
| Declination | −09° 35′ 44.614581″[1] |
| Apparent magnitude (V) | 6.92[2] |
| Characteristics | |
| Spectral type | G6V[3] |
| B−V color index | 0.724±0.014[2] |
| Astrometry | |
| Radial velocity (Rv) | −48.69±0.10[2] km/s |
| Proper motion (μ) | RA: −91.792±0.036 mas/yr[1] Dec.: −223.979±0.030 mas/yr[1] |
| Parallax (π) | 25.5913 ± 0.0410 mas[1] |
| Distance | 127.4 ± 0.2 ly (39.08 ± 0.06 pc) |
| Absolute magnitude (MV) | 4.198[4] |
| Details[4] | |
| Mass | 0.995±0.019 M☉ |
| Radius | 1.51±0.06 R☉ |
| Luminosity | 2.413±0.009[5] 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[2] Gyr |
| Other designations | |
| 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,[2] 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,[1] but is drifting closer with a radial velocity of −48.7 km/s.[2]
This stellar object is a core hydrogen fusing G-type main-sequence star with a classification of G6V, although it is likely evolved[4] with an age of around 11 billion years.[2] 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[4] and it has a very inactive chromosphere.[3][4] It is radiating 2.4[5] times the luminosity of the Sun from its photosphere at an effective temperature of 5,491 K.[4]
Gaia DR3 was invoked but never defined (see the help page).Anderson_Francis_2012 was invoked but never defined (see the help page).Gray_et_al_2006 was invoked but never defined (see the help page).Pilyavsky_et_al_2011 was invoked but never defined (see the help page).SIMBAD was invoked but never defined (see the help page).