WISEPC J140518.40+553421.4 (abbreviated WISE 1405+5534) is a brown dwarf of spectral class Y0 (pec?

[1][5] An older distance estimate of WISE 1405+5534 is a trigonometric parallax, measured using Spitzer Space Telescope and published in 2013 by Trent Dupuy and Adam Kraus: 0.129 ± 0.019 arcsec, corresponding to a distance 7.8+1.3−1.0 pc, or 25.3+4.4−3.2 ly.

[3] Later the parallax was refined to 158.2±2.6 mas, showing that it is closer at about 6.3 pc, or 20.6 light years.

[2][5] One work has shown that models that include optically thin sulfides, KCl and Cr clouds fit the observed photometry of WISE 1405+5534 better.

[7] Another team observed WISE 1405+5534 with the Very Large Array to search for radio emission coming from an aurora, but was not able to detect any.