IRU Calibration Maneuver

[SDO]

SDO will perform an IRU Calibration maneuver on May 13, 2015 from 0400 UTC (Midnight) to 1200 UTC (8 a.m. ET). The spacecraft will perform a series of roll, pitch, and yaw maneuvers designed to exercise the ACS. Science data may not be available during this time.



More... (http://sdoisgo.blogspot.com/2015/05/iru-calibration-maneuver.html)