| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Pisces |
| Right ascension | 00h 44m 41.2003s[1] |
| Declination | +20° 26′ 56.1380″[1] |
| Apparent magnitude (V) | 8.70[2] |
| Characteristics | |
| Spectral type | G5V[3] |
| B−V color index | +0.771±0.021[2] |
| Astrometry | |
| Radial velocity (Rv) | −14.20±0.09[2] km/s |
| Proper motion (μ) | RA: +122.070±0.102[1] mas/yr Dec.: −124.192±0.062[1] mas/yr |
| Parallax (π) | 12.2595 ± 0.0538 mas[1] |
| Distance | 266 ± 1 ly (81.6 ± 0.4 pc) |
| Absolute magnitude (MV) | 4.28[2] |
| Details[4] | |
| Mass | 1.12±0.03 M☉ |
| Radius | 1.35±0.03 R☉ |
| Luminosity | 1.68±0.01 L☉ |
| Surface gravity (log g) | 4.22±0.03 cgs |
| Temperature | 5,666±43 K |
| Metallicity [Fe/H] | 0.34±0.01[2] dex |
| Rotational velocity (v sin i) | 5.6[5] km/s |
| Age | 6.3±1.0 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 4203 is a single star in the equatorial constellation of Pisces, near the northern constellation border with Andromeda. It has a yellow hue and is too faint to be viewed with the naked eye, having an apparent visual magnitude of 8.70.[2] The distance to this object is 266 light years based on parallax,[1] but it is drifting closer to the Sun with a radial velocity of −14 km/s.[2]
This object is an ordinary G-type main-sequence star with a stellar classification of G5V. It is photometrically-stable star with an inactive chromosphere, and has a much higher than normal metallicity.[3] The star is roughly 6.3 billion years old and is spinning with a projected rotational velocity of 5.6 km/s.[5] It has 12% more mass than the Sun and a 35% greater radius. HD 4203 is radiating 1.68 times the luminosity of the Sun from its photosphere at an effective temperature of 5,666 K.[4]
Gaia DR2 was invoked but never defined (see the help page).Anderson2012 was invoked but never defined (see the help page).Vogt2002 was invoked but never defined (see the help page).Bonfanti2015 was invoked but never defined (see the help page).Earle2017 was invoked but never defined (see the help page).Simbad was invoked but never defined (see the help page).