SIMP J013656.5+093347

SIMP J013656.5+093347 (abbreviated SIMP0136) is a planetary mass object[4] at 19.9 light-years from Earth in the constellation Pisces.

It belongs to the spectral class T2.5[1] and its position shifts due to its proper motion annually by about 1.24 arcsec in the right ascension.

A team observed this object with the 1.8-m Perkins Telescope Observatory near Flagstaff, Arizona in 2015.

The variation has been interpreted as a signature of weather patterns coming in and out of view over the object's 2.4h rotation period.

The shape of this lightcurve evolves over timescales of days, which has been interpreted as a sign of evolution of the cloud patterns in its atmosphere.

SIMP0136 with the legacy surveys. For a planetary-mass object it is relative bright (apparent J≈13.4).