UGPS J072227.51−054031.2
Brown dwarf star in the constellation Monoceros / From Wikipedia, the free encyclopedia
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UGPS J072227.51−054031.2 (designation often abbreviated to UGPS 0722−05) is a brown dwarf of late T type, or possibly a rogue planet located approximately 4.1 parsecs (13 light-years) from Earth.[3]
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Monoceros |
Right ascension | 07h 22m 27.29s[1] |
Declination | −05° 40′ 30.0″[2] |
Characteristics | |
Spectral type | T9[2] |
Apparent magnitude (i (AB SDSS)) | 24.32 ± 0.12[3] |
Apparent magnitude (z) | 20.51 ± 0.09[1][4] |
Apparent magnitude (Y) | 17.37 ± 0.02[1] |
Apparent magnitude (J) | 16.52 ± 0.02[1] |
Apparent magnitude (H) | 16.90 ± 0.02[1] |
Apparent magnitude (K) | 17.07 ± 0.08[1] |
Apparent magnitude (L') | 13.4 ± 0.3[1] |
Apparent magnitude (N) | 10.28 ± 0.24[1] |
Astrometry | |
Radial velocity (Rv) | 46.9 ± 2.5[4] km/s |
Proper motion (μ) | RA: −904.14 ± 1.71[3] mas/yr Dec.: 352.025 ± 1.21[3] mas/yr |
Parallax (π) | 242.8 ± 2.4 mas[3] |
Distance | 13.4 ± 0.1 ly (4.12 ± 0.04 pc) |
Details | |
Mass | (10.7 ± 0.2)—(25.8 ± 0.9)[5] MJup |
Radius | (0.886 ± 0.005)—(1.0192 ± 0.0005)[5] RJup |
Luminosity (bolometric) | (6.3 ± 0.4×10−7[5] L☉ |
Surface gravity (log g) | (4.39 ± 0.01)—(4.90 ± 0.01)[5] cgs |
Temperature | (502 ± 10)—(539 ± 12)[5] K |
Rotational velocity (v sin i) | 40 ± 10[4] km/s |
Age | 1–5[4] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Location of UGPS 0722−05 in the constellation Monoceros |
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