The Coldest Brown Dwarf . ... Credit Copyright: NASA , JPL-Caltech , WISE Explanation: This cosmic snapshot composed with image data from NASA's Wide-field Infrared Survey Explorer ( WISE ) satellite captures a multitude of faint stars and distant galaxies toward the constellation Lyra at wavelengths longer than visible light. ... Cataloged as WISE 1828+2650, it lies within 40 light-years of the Sun and is currently the coldest brown dwarf known . ... How cold is WISE 1828+2650? ...