GJ 3323
GJ 3323 (also known as LHS 1723) is a nearby single star located in the equatorial constellation Eridanus, about 0.4° to the northwest of the naked eye star Psi Eridani. It is invisible to the naked eye with an apparent visual magnitude 12.20. Parallax measurements give a distance estimate of 17.5 light-years (5.4 parsecs) from the Sun. It is drifting further away with a radial velocity of +42.3 km/s. Roughly 104,000 years ago, the star is believed to have come to within 7.34 ± 0.16 light-years of the Solar System.
GJ 3323 Location of GJ 3323 in the constellation Eridanus | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 05h 01m 57.42613s |
| Declination | −06° 56′ 46.3763″ |
| Apparent magnitude (V) | 12.20 |
| Characteristics | |
| Spectral type | M4.0Ve |
| B−V color index | +1.72 |
| Astrometry | |
| Radial velocity (Rv) | 42.309±0.0809 km/s |
| Proper motion (μ) | RA: −551.746 mas/yr Dec.: −533.648 mas/yr |
| Parallax (π) | 186.0466 ± 0.0277 mas |
| Distance | 17.531 ± 0.003 ly (5.3750 ± 0.0008 pc) |
| Absolute magnitude (MV) | 13.57 |
| Details | |
| Mass | 0.1705±0.0044 M☉ |
| Radius | 0.1862±0.0059 R☉ |
| Luminosity | 0.003654±0.000052 L☉ |
| Surface gravity (log g) | 5.07±0.07 cgs |
| Temperature | 3,288±51 K |
| Metallicity [Fe/H] | +0.01±0.16 dex |
| Rotation | 88.50 d |
| Rotational velocity (v sin i) | 1.0±0.8 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
The stellar classification of GJ 3323 is M4.0Ve, indicating that it is a red dwarf, with emission lines appearing in its spectrum. It is fully convective and a source of X-ray emission. The star has 17% of the Sun's mass, 19% of the radius of the Sun, and just 0.4% of the Sun's luminosity.