WISE 1534−1043
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Libra |
| Right ascension | 15h 34m 29.02178s |
| Declination | −10° 43′ 24.8841″ |
| Characteristics | |
| Spectral type | sdY? |
| Astrometry | |
| Radial velocity (Rv) | −116±4 km/s |
| Total velocity | 238±14 km/s |
| Proper motion (μ) | RA: −1253.1±8.9 mas/yr Dec.: −2377.0±7.0 mas/yr |
| Parallax (π) | 61.4±4.7 mas |
| Distance | 53 ± 4 ly (16 ± 1 pc) |
| Details | |
| Mass | 19–30 MJup |
| Radius | 0.79+0.07 −0.06 RJup |
| Luminosity | 2.27×10−7 L☉ |
| Luminosity (bolometric) | 3.72×10−7 L☉ |
| Surface gravity (log g) | 4.98±0.08 cgs |
| Temperature | 502±6 K |
| Metallicity | −2.22±0.05 |
| Metallicity [Fe/H] | >−2.0 dex |
| Other designations | |
| CWISE J153429.19−104318.9, WISEA J153429.75−104303.3 | |
| Database references | |
| SIMBAD | data |
WISE 1534−1043 (or WISEA J153429.75−104303.3, and referred to as "The Accident") is a brown dwarf (substellar object), Class Y, the coolest class, visible only in the infrared. It was accidentally discovered via the Wide-field Infrared Survey Explorer.
The brown dwarf is 50 light years from Earth, with a transverse velocity of over 200 km/s – over 25% faster than the next fastest stellar object of its kind. Its relative color components are unique among brown dwarfs observed to date. The best guess as to its origins are that it is a very old and low-metallicity object. On the 245th meeting of the AAS it was announced that JWST confirmed the object as a brown dwarf.