Epoch J2000 Equinox J2000
|Right ascension||01h 46m 56.66s|
|Declination||42° 34′ 10″|
|Apparent magnitude (H)||18.71 ± 0.24|
|Distance||~ 20.5 ly
(~ 6.3 pc)
WISE J014656.66+423410.0 (designation abbreviated to WISE 0146+4234) is a brown dwarf of spectral class Y0, located in constellation Andromeda. Being approximately 20 light-years from Earth, it is one of the Sun's nearest neighbors.
WISE 0146+4234 was discovered in 2012 by J. Davy Kirkpatrick et al. from data, collected by Wide-field Infrared Survey Explorer (WISE) Earth-orbiting satellite — NASA infrared-wavelength 40 cm (16 in) space telescope, which mission lasted from December 2009 to February 2011. In 2012 Kirkpatrick et al. published a paper in The Astrophysical Journal, where they presented discovery of seven new found by WISE brown dwarfs of spectral type Y, among which also was WISE 0146+4234.
Trigonometric parallax of WISE 0146+4234 is not yet measured. Therefore, there are only distance estimates of this object, obtained by indirect — spectrofotometric — means (see table).
WISE 0146+4234 distance estimates
|Source||Parallax, mas||Distance, pc||Distance, ly||Ref.|
|Kirkpatrick et al. (2012), Tables 4 & 8||6.3||20.5|||
Non-trigonometric distance estimates are marked in italic.
See also 
The other six discoveries of brown dwarfs, published in Kirkpatrick et al. (2012):
- WISE 0350-5658 (Y1)
- WISE 0359-5401 (Y0)
- WISE 0535-7500 (≥Y1)
- WISE 0713-2917 (Y0)
- WISE 0734-7157 (Y0)
- WISE 2220-3628 (Y0)
- Kirkpatrick, J. Davy; Gelino, Christopher R.; Cushing, Michael C.; Mace, Gregory N.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Eisenhardt, Peter R.; McLean, Ian S.; Mainzer, Amanda K.; Burgasser, Adam J.; Tinney, C. G.; Parker, Stephen; Salter, Graeme (2012). "Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function". The Astrophysical Journal 753 (2): 156. arXiv:1205.2122. Bibcode:2012ApJ...753..156K. doi:10.1088/0004-637X/753/2/156.
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