UGPS J0521+3640

UGPS J0521+3640
	; UGPS J0521+3640; Credit: UKIDSS
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: 569.0±0.9 mas/yr ; Dec.: −1511.0±1.0 mas/yr
Parallax (π)	122.2 ± 1.6 mas
Distance	26.7 ± 0.3 ly ; (8.2 ± 0.1 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
Database references
SIMBAD	data

UGPS J0521+3640 is a nearby brown dwarf of spectral class T8.5, located in the constellation 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] Based on its parallax measured in 2019, its distance is 26.7 ± 0.3 light-years (8.186 ± 0.092 parsecs).^[2]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ 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". Monthly Notices of the Royal Astronomical Society: Letters. 414 (1): L90–L94. arXiv:1104.1526. Bibcode:2011MNRAS.414L..90B. doi:10.1111/j.1745-3933.2011.01062.x. S2CID 18008503.
^ ^a ^b ^c Kirkpatrick, J. Davy; Martin, Emily C.; Smart, Richard L.; Cayago, Alfred J.; Beichman, Charles A.; Marocco, Federico; et al. (February 2019). "Preliminary Trigonometric Parallaxes of 184 Late-T and Y Dwarfs and an Analysis of the Field Substellar Mass Function into the "Planetary" Mass Regime". The Astrophysical Journal Supplement Series. 240 (2): 69. arXiv:1812.01208. Bibcode:2019ApJS..240...19K. doi:10.3847/1538-4365/aaf6af. 19.

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[Burningham2011-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ 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". Monthly Notices of the Royal Astronomical Society: Letters. 414 (1): L90–L94. arXiv:1104.1526. Bibcode:2011MNRAS.414L..90B. doi:10.1111/j.1745-3933.2011.01062.x. S2CID 18008503.

[Kirkpatrick2019-2] Kirkpatrick, J. Davy; Martin, Emily C.; Smart, Richard L.; Cayago, Alfred J.; Beichman, Charles A.; Marocco, Federico; et al. (February 2019). "Preliminary Trigonometric Parallaxes of 184 Late-T and Y Dwarfs and an Analysis of the Field Substellar Mass Function into the "Planetary" Mass Regime". The Astrophysical Journal Supplement Series. 240 (2): 69. arXiv:1812.01208. Bibcode:2019ApJS..240...19K. doi:10.3847/1538-4365/aaf6af. 19.

[1]

[2]

Observation data Epoch 2007.82 Equinox J2000
UGPS J0521+3640 Credit: UKIDSS
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: 569.0±0.9 mas/yr^[2] Dec.: −1511.0±1.0 mas/yr^[2]
Parallax (π)	122.2 ± 1.6 mas^[2]
Distance	26.7 ± 0.3 ly (8.2 ± 0.1 pc)

Details^[1]

Mass	14–32 M_Jup
Radius	0.8–1.0 R_Jup
Surface gravity (log g)	4.5–5.0 cgs
Temperature	600–650 K

Database references
SIMBAD	data

See also

References