UGPS J0521+3640

UGPS J0521+3640
Observation data; Epoch 2007.82 Equinox J2000
Constellation	Auriga
Right ascension	05h 21m 27.27s
Declination	+36° 40′ 48.6″
Characteristics
Spectral type	T8.5
Apparent magnitude (J (UKIDSS filter system))	16.94 ± 0.02
Apparent magnitude (H (UKIDSS filter system))	17.28 ± 0.04
Apparent magnitude (K (UKIDSS filter system))	17.32 ± 0.09
Astrometry
Proper motion (μ)	RA: 513 mas/yr; Dec.: −1507 mas/yr
Distance	26.7+3.9; −3.3 ly; (8.2+1.2; −1.0 pc)
Details
Mass	14—32 MJup
Radius	0.8—1.0 RJup
Surface gravity (log g)	4.5—5.0 cgs
Temperature	600—650 K

UGPS J0521+3640 is a nearby brown dwarf of spectral class T8.5, located in constallation Auriga. It was discovered in 2011 using United Kingdom Infrared Telescope (UKIRT), UKIRT Infrared Deep Sky Survey (UKIDSS), UGPS (UKIDSS Galactic Plane Survey) component, 6th data release.^[1]

Its photometric distance estimate is 8.2^+1.2
_−1.0 pc, or 26.7^+3.9
_−3.3 ly.^[1]

References

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Observation data Epoch 2007.82^[1] Equinox J2000^[1]
Constellation	Auriga
Right ascension	05^h 21^m 27.27^s^[1]
Declination	+36° 40′ 48.6″^[1]
Characteristics
Spectral type	T8.5^[1]
Apparent magnitude (J (UKIDSS filter system))	16.94 ± 0.02^[1]
Apparent magnitude (H (UKIDSS filter system))	17.28 ± 0.04^[1]
Apparent magnitude (K (UKIDSS filter system))	17.32 ± 0.09^[1]
Astrometry

Proper motion (μ)	RA: 513^[1] mas/yr Dec.: −1507^[1] mas/yr
Distance	26.7^+3.9 _−3.3^[1] ly (8.2^+1.2 _−1.0^[1] pc)

Details

Mass	14—32^[1] M_Jup
Radius	0.8—1.0^[1] R_Jup
Surface gravity (log g)	4.5—5.0^[1] cgs
Temperature	600—650^[1] K