| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Octans |
| Right ascension | 22h 55m 45.509s[1] |
| Declination | −75° 27′ 31.21″[1] |
| Apparent magnitude (V) | 10.377[1] |
| Characteristics | |
| Spectral type | M3V[2] |
| Astrometry | |
| Proper motion (μ) | RA: -1026.327[3]mas/yr Dec.: -1059.318[3]mas/yr |
| Parallax (π) | 116.4127±0.0291 mas[3] |
| Distance | 28.017 ± 0.007 ly (8.590 ± 0.002 pc) |
| Absolute magnitude (MV) | 10.700 ± 0.0240[4] |
| Details[4] | |
| Radius | 0.442 ± 0.040 R☉ |
| Temperature | 3467 ± 100 K |
| Rotational velocity (v sin i) | 0.95 km/s |
| Other designations | |
| GJ 877,HIP 113229,LHS 531[1] | |
| Database references | |
| SIMBAD | data |
Gliese 877 (GJ 877 /HIP 113229 /LHS 531)[1] is ared dwarf located in the southernconstellation ofOctans, near the boundary withIndus.
Gliese 877's bolometric luminosity is just 2.3% of the Sun's.[5] It shines with anapparent magnitude of +10.22, so it cannot be seen with the naked eye. Nevertheless, it is considerably brighter than other red dwarfs, such as Proxima Centauri, the closest red dwarf to the Solar System; in particular, it is almost 14 times more luminous than Proxima. Of spectral type M3V,[2] its effective temperature is 3390 K.[5] It does not appear to be a variable star.[2]
Gliese 877 is 28.1 light years from the Solar System.[1] Known stars close to it areβ Hydri andζ Tucanae, respectively 4.5 and 6.2 light years.[6]
