2MASS 0532+8246

Coordinates: 05^h 32^m 53.46^s, +82° 46′ 46.5″

2MASS J05325346+8246465

Observation data Epoch J2000[1]      Equinox J2000[1]
Constellation	Camelopardalis
Right ascension	05^h 32^m 53.46^s[1]
Declination	+82° 46′ 46.5″[1]
Characteristics
Spectral type	sdL7[1]
Astrometry
Parallax (π)	37.50 ± 1.70[2] mas
Distance	87 ± 4 ly (27 ± 1 pc)
Details
Mass	0.077 – 0.085 M☉
Metallicity	0.1 – 0.01
Age	10–15 Gyr
Other designations
2MASS J05325346+8246465,[1] 2MASS 0532+8246
Database references
SIMBAD	data

2MASS 0532+8246 (full designation 2MASS J05325346+8246465) is possibly the first halo brown dwarf and the first substellar subdwarf.

• Mass: 0.077 – 0.085 M_Sun
• Age: 10–15 Ga
• Metallicity Z: 0.1 – 0.01 Z_Sun

References

• The First Substellar Subdwarf? Discovery of a Metal-Poor L Dwarf with Halo Kinematics, Adam J. Burgasser, et al. 2003

1. "2MASS J05325346+8246465 -- Brown Dwarf (M<0.08solMass)". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2012-11-23.
2. Faherty, Jacqueline K.; Burgasser, Adam J.; Walter, Frederick M.; Van der Bliek, Nicole; Shara, Michael M.; Cruz, Kelle L.; West, Andrew A.; Vrba, Frederick J.; Anglada-Escud, Guillem (2012). "The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 Ultracool Dwarfs". The Astrophysical Journal 752 (1): 56. arXiv:1203.5543. Bibcode:2012ApJ...752...56F. doi:10.1088/0004-637X/752/1/56.

External links

• Entry at DwarfArchives.org