ULAS J090116.23-030635.0
Brown dwarf ULAS J090116.23−030635.0 |
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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Constellation | Water snake |
Right ascension | 09 h 01 m 16.23 s |
declination | -03 ° 06 ′ 35 ″ |
Apparent brightness | J-band: (17.90 ± 0.04) mag |
distance | approx. 70 to 110 ly (approx. 20 to 30 pc pc ) |
Typing | |
Spectral class | T7.5 ± 0.5 |
Physical Properties |
ULAS J090116.23−030635.0 is a brown dwarf of the spectral class T7.5 in the constellation Hydra . Because of the relationship between absolute brightness and spectral type, its distance is estimated to be around 20 to 30 parsecs . The low brightness measured in the K-band indicates a relatively high surface gravity. The property was designed by Lodieu et al. Discovered in the data of the UKIRT Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS) Data Release 1 (DR1) and published in 2007.
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- Nicolas Lodieu et al. a .: Eight new T4.5-T7.5 dwarfs discovered in the UKIDSS Large Area Survey Data Release 1 . In: Monthly Notices of the Royal Astronomical Society , Vol. 379 (2007), Issue 4, pp. 1423ff. bibcode : 2007MNRAS.379.1423L