2MASS 1503+2525

Coordinates: 15^h 03^m 19.613^s, +25° 25′ 19.68″

2MASS J15031961+2525196

Observation data Epoch J2000[1]      Equinox J2000[1]
Constellation	Boötes
Right ascension	15^h 03^m 19.613^s[1]
Declination	25° 25′ 19.68″[1]
Database references
SIMBAD	data

2MASS J15031961+2525196 (2MASS 1503+2525) is a nearby brown dwarf of spectral type T5.5,^[2] located in constellation Boötes at approximately 20.7 light-years from Earth.^[3]

History of observations

Discovery

2MASS 1503+2525 was discovered in 2003 by Adam J. Burgasser et al. in wide-field search for T dwarfs using the Two Micron All Sky Survey (2MASS).

Distance

Currently the most precise distance estimate of 2MASS 1503+2525 is a trigonometric parallax, published by Dupuy and Liu in 2012: 157.2 ± 2.2 mas, corresponding to a distance 6.36 ± 0.09 pc, or 20.7 ± 0.3 ly.^[3]

2MASS 1503+2525 distance estimates

Source	Parallax, mas	Distance, pc	Distance, ly	Ref.
Burgasser et al. (2003)		~7.8	~25.4	[2]
Dupuy & Liu (2012)	157.2 ± 2.2	6.36 ± 0.09	20.7 ± 0.3	[3]

Non-trigonometric distance estimates are marked in italic. The best estimate is marked in bold.

References

1. "2MASS J15031961+2525196 -- Brown Dwarf (M<0.08solMass)". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2013-09-19.
2. Burgasser, A. J.; Kirkpatrick, J. Davy; McElwain, Michael W.; Cutri, Roc M.; Burgasser, Albert J.; Skrutskie, Michael F. (2003). "The 2Mass Wide-Field T Dwarf Search. I. Discovery of a Bright T Dwarf within 10 Parsecs of the Sun". The Astronomical Journal 125 (2): 850–857. arXiv:astro-ph/0211117. Bibcode:2003AJ....125..850B. doi:10.1086/345975.
3. Dupuy, Trent J.; Liu, Michael C. (2012). "The Hawaii Infrared Parallax Program. I. Ultracool Binaries and the L/T Transition". The Astrophysical Journal Supplement 201 (2): 19. arXiv:1201.2465. Bibcode:2012ApJS..201...19D. doi:10.1088/0067-0049/201/2/19.