UGPS J0521+3640

Coordinates: 05^h 21^m 27.27^s, +36° 40′ 48.6″

UGPS J0521+3640

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] MJup
Radius	0.8—1.0[1] RJup
Surface gravity (log g)	4.5—5.0[1] cgs
Temperature	600—650[1] 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]

See also

• UGPS J0652+0324
• List of star systems within 25–30 light-years

References

1. Burningham, Ben; Lucas; Leggett; Smart; Baker; Pinfield; Tinney; Homeier; Allard; Zhang; Gomes; Day-Jones; Jones; Kovacs; Lodieu; Marocco; Murray; Sipocz (2011). "The discovery of the T8.5 dwarf UGPS J0521+3640". arXiv:1104.1526v3 [astro-ph.SR].