2MASS 0532+8246

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

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

2MASS 0532+8246 (full designation 2MASS J05325346+8246465) is possibly the first halo brown dwarf and the first substellar subdwarf and it is the oldest brown dwarf star with 12.5 billion years old.[citation needed]


  • The First Substellar Subdwarf? Discovery of a Metal-Poor L Dwarf with Halo Kinematics, Adam J. Burgasser, et al. 2003 [1]
  1. ^ a b c d e f "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:1203.5543Freely accessible. Bibcode:2012ApJ...752...56F. doi:10.1088/0004-637X/752/1/56. 

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