Constellation Delphinus | ||
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WISE 2056+1459 (full designation WISEPC J205628.90+145953.3) is a brown dwarf of spectral class Y0, located in constellation Delphinus at approximately 23.3 light-years from Earth.
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Discovery
WISE 2056+1459 was discovered in 2011 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. WISE 2056+1459 has two discovery papers: Kirkpatrick et al. (2011) and Cushing et al. (2011), however, basically with the same authors and published nearly simultaneously.
Distance
Currently the most accurate distance estimate of WISE 2056+1459 is a trigonometric parallax, published in 2014 by Beichman et al.: 0.140 ± 0.009 arcsec, corresponding to a distance 7.1+0.5
−0.4 pc, or 23.3+1.6
−1.4 ly.
Space motion
WISE 2056+1459 has proper motion of about 972 milliarcseconds per year.
Temperature
The object's temperature estimate is 350 (350—400) K.