Astronomy:2MASS 1503+2525
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Coordinates: 
15h 03m 19.613s, +25° 25′ 19.68″
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Boötes |
| Right ascension | 15h 03m 19.613s[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
- ↑ 1.0 1.1 1.2 "2MASS J15031961+2525196 -- Brown Dwarf (M<0.08solMass)". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=2MASS+J15031961%2B2525196. Retrieved 2013-09-19.
- ↑ 2.0 2.1 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. doi:10.1086/345975. Bibcode: 2003AJ....125..850B.
- ↑ 3.0 3.1 3.2 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. doi:10.1088/0067-0049/201/2/19. Bibcode: 2012ApJS..201...19D.
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