Gliese 887
Gliese 887 Location of Gliese 887 in the constellation Piscis Austrinus | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Piscis Austrinus |
| Right ascension | 23h 05m 52.03579s |
| Declination | −35° 51′ 11.0552″ |
| Apparent magnitude (V) | 7.34 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | M0.5V |
| U−B color index | +1.18 |
| B−V color index | +1.50 |
| Variable type | Suspected |
| Astrometry | |
| Radial velocity (Rv) | +8.31±0.13 km/s |
| Proper motion (μ) | RA: +6,765.995 mas/yr Dec.: +1,330.285 mas/yr |
| Parallax (π) | 304.1354±0.0200 mas |
| Distance | 10.7241 ± 0.0007 ly (3.2880 ± 0.0002 pc) |
| Absolute magnitude (MV) | 9.8 |
| Details | |
| Mass | 0.479+0.011 −0.010 M☉ |
| Radius | 0.474±0.008 R☉ |
| Luminosity | 0.0368±0.0006 L☉ |
| Habitable zone inner limit | 0.16 AU |
| Habitable zone outer limit | 0.40 AU |
| Surface gravity (log g) | 4.78 cgs |
| Temperature | 3,672+36 −34 K |
| Metallicity [Fe/H] | −0.22±0.09 dex |
| Rotation | 38.7±0.5 d |
| Rotational velocity (v sin i) | 1 km/s |
| Age | 4.57 Gyr |
| Other designations | |
| Lacaille 9352, NSV 14420, CD−36°15693, GJ 887, HD 217987, HIP 114046, SAO 214301, LFT 1758, LHS 70, LTT 9348, PLX 5584, UGP 591, Cordoba 31353 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | data |
Gliese 887 (GJ 887), also Lacaille 9352 (Lac 9352), is a red dwarf star in the southern constellation of Piscis Austrinus. With an apparent visual magnitude of 7.34, this star is too faint to be viewed with the naked eye except possibly under excellent seeing conditions. Parallax measurements place it at a distance of about 10.72 light-years (3.29 parsecs) from Earth. It is the twelfth closest star system to the Solar System and is the closest star in the constellation Piscis Austrinus. Its closest neighbour is the EZ Aquarii triple star system at about 4.1 ly away.