Gliese 710
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Serpens |
| Right ascension | 18h 19m 50.8412s |
| Declination | −01° 56′ 19.005″ |
| Apparent magnitude (V) | 9.66 (9.65–9.69) |
| Characteristics | |
| Spectral type | K7 Vk |
| U−B color index | +1.26 |
| B−V color index | +1.37 |
| Variable type | Suspected |
| Astrometry | |
| Radial velocity (Rv) | −14.53±0.44 km/s |
| Proper motion (μ) | RA: −0.414±0.019 mas/yr Dec.: −0.108±0.017 mas/yr |
| Parallax (π) | 52.3963±0.0171 mas |
| Distance | 62.25 ± 0.02 ly (19.085 ± 0.006 pc) |
| Absolute magnitude (MV) | 8.20 (8.19–8.23) |
| Details | |
| Mass | 0.57 M☉ |
| Radius | 0.58 R☉ |
| Luminosity (bolometric) | 0.091 L☉ |
| Luminosity (visual, LV) | 0.045 L☉ |
| Surface gravity (log g) | 4.66 cgs |
| Temperature | 4,143 K |
| Metallicity [Fe/H] | −0.11 dex |
| Rotational velocity (v sin i) | 6.42±0.78 km/s |
| Age | 300 Myr |
| Other designations | |
| Gliese 710, BD–01°3474, HIP 89825, HD 168442, NSV 10635 | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
Gliese 710, or HIP 89825, is an orange 0.6 M☉ star in the constellation Serpens Cauda. It is projected to pass near the Sun in about 1.29 million years at a predicted minimum distance of 0.051 parsecs—0.1663 light-years (10,520 astronomical units) (about 1.6 trillion km)—about 1/25th of the current distance to Proxima Centauri. Such a distance would make for a similar brightness to the brightest planets, optimally reaching an apparent visual magnitude of about −2.7. The star's proper motion will peak around one arcminute per year, a rate of apparent motion that would be noticeable over a human lifespan. This is a timeframe, based on data from Data Release 3 from the Gaia spacecraft, well within the parameters of current models which cover the next 15 million years.