| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Serpens[1] |
| Right ascension | 16h 00m 18.83726s[2] |
| Declination | +00° 08′ 13.2306″[2] |
| Apparent magnitude (V) | 8.03[3] |
| Characteristics | |
| Spectral type | G3V[4] |
| B−Vcolor index | 0.644[5] |
| Astrometry | |
| Radial velocity (Rv) | −24.7±0.7[5] km/s |
| Proper motion (μ) | RA: −136.615[2]mas/yr Dec.: −108.779[2]mas/yr |
| Parallax (π) | 22.3164±0.0456 mas[2] |
| Distance | 146.2 ± 0.3 ly (44.81 ± 0.09 pc) |
| Absolute magnitude (MV) | 4.87±0.10[5] |
| Details[5] | |
| Mass | 1.01±0.02 M☉ |
| Radius | 1.01+0.01 −0.04[2] R☉ |
| Luminosity | 1.047±0.003[2] L☉ |
| Surface gravity (log g) | 4.28±0.12 cgs |
| Temperature | 5,768±43 K |
| Metallicity [Fe/H] | 0.008 dex |
| Rotational velocity (v sin i) | < 2.6 km/s |
| Age | 3.8±2.9 Gyr |
| Other designations | |
| BD+00°3441,HIP 78399,SAO 121307,PPM 162138,LTT 14757,NLTT 41715[6] | |
| Database references | |
| SIMBAD | data |
HD 143436 also known as HIP 78399, is aG-typestar in theconstellationSerpens. The temperature, rotation, mass, and abundance of elements in this star are close to properties of theSun, and for this reason it is asolar twin candidate. The only notable difference is an approximately six times higher abundance oflithium compared to the Sun and most likely a younger age of 3.8 Gyr. Thespace velocity components of this star are (U, V, W) = (−19.2, −38.6, −7.0) km/s.[5]
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