K2 Mission Data

The K2 mission observed 100 square degrees for 80 days each across 20 different pointings along the ecliptic, collecting high-precision photometry for a selection of targets within each field. The mission began when the original Kepler mission ended due to loss of the second reaction wheel in 2013.K2任务（K2 mission）在黄道面沿线的20个不同观测指向区域，每个区域开展为期80天的观测，累计覆盖100平方度的天区，并为每个天区内的选定目标采集高精度测光数据。该任务启动于2013年，彼时原开普勒任务因第二台反作用轮失效而终止。