WISE 1639−6847
WISE 1639-6847 in near-infrared with Hubble. It shows the brown dwarf moving within 1 ½ years Credit: Hubble Space Telescope; Fontanive et al. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Triangulum Australe |
| Right ascension | 16h 39m 39.730s |
| Declination | −68° 47′ 06.693″ |
| Characteristics | |
| Spectral type | Y0 pec |
| Astrometry | |
| Proper motion (μ) | RA: 576.94±0.22 mas/yr Dec.: −3108.48±0.21 mas/yr |
| Parallax (π) | 211.11±0.56 mas |
| Distance | 15.45 ± 0.04 ly (4.74 ± 0.01 pc) |
| Other designations | |
| GJ 12393,WISEPC J163940.83-684738.6 WISE 1639-6847 W1639 | |
| Database references | |
| SIMBAD | data |
Location of WISE 1639−6847 in the constellation Triangulum Australe | |
WISE J163940.83−684738.6 (designation is abbreviated to WISE 1639−6847, or W1639) is a brown dwarf of spectral class Y0 pec, located in the constellation Triangulum Australe at 15.5 light-years from Earth. It is the closest star or brown dwarf in its constellation,: 84 and the second closest known Y dwarf as of February 2024.