2MASS J09393548−2448279
Location of 2MASS 0939−2448 in the constellation Antlia | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Antlia |
| Right ascension | 09h 39m 35.48s |
| Declination | −24° 48′ 27.9″ |
| Characteristics | |
| Spectral type | T8 |
| Apparent magnitude (J) | 15.61 ± 0.09 |
| Apparent magnitude (H) | 15.96 ± 0.09 |
| Apparent magnitude (K) | 16.83 ± 0.09 |
| Astrometry | |
| Proper motion (μ) | RA: +573.4 ± 2.3 mas/yr Dec.: −1044.7 ± 2.5 mas/yr |
| Parallax (π) | 187.3±4.6 mas |
| Distance | 17.4 ± 0.4 ly (5.3 ± 0.1 pc) |
| Details | |
| 2MASS 0939-2448 A | |
| Mass | 20–50 MJup |
| Radius | 1.22+0.1 −0.09 RJup |
| Luminosity | 0.000002 L☉ |
| Surface gravity (log g) | 4.88+0.2 −0.4 cgs |
| Temperature | 611+17 −24 K |
| Metallicity | −0.3–0.0 |
| Age | 2–10 Gyr |
| 2MASS 0939-2448 B | |
| Mass | 20–40 MJup |
| Radius | 0.09 R☉ |
| Temperature | 600–700 K |
| Metallicity | −0.3–0.0 |
| Age | 2–10 Gyr |
| Other designations | |
| 2MASS J09393548−2448279 | |
| Database references | |
| SIMBAD | data |
2MASS J09393548−2448279 (abbreviated 2MASS 0939−2448) is a probable system of two nearby T-type brown dwarfs, located in constellation Antlia at 17.4 light-years from Earth.