WISE 1217+1626
WISEPC J121756.91+162640.2 (designation abbreviated to WISE 1217+1626, or WISE J1217+1626) is a binary brown dwarf system of spectral classes T9 + Y0, located in constellation Coma Berenices at approximately 30.4 light-years from Earth. == History of observations == === Discovery === WISE 1217+1626 A was discovered in 2011 by J. Davy Kirkpatrick et al.