Landsat 8 was launched February 11, 2013, and contains two sensors. One collects 8-band multispectral imagery at 30-meter resolution as well as panchromatic imagery at 15 meters. The other collects thermal imagery at 100-meter resolution. The orbit of the satellite results in its capturing 170-by-185-kilometer sized scenes along
a predefined path that returns to the same location every 16 days.
Ref:
,Esri News
for Map, Chart & Data Production Summer 2014