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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.
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Discovery
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.
Distance
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
Non-trigonometric distance estimates are marked in italic.