Update#1 S-NPP Drag Make-up Maneuver (DMU) was canceled for February 22, 2023. It will be rescheduled for a later time.  There was no data latency or data loss.

Topic: S-NPP Drag Make-up Maneuver (DMU) scheduled for February 22, 2023

Date/Time Issued: February 22, 2023 1748Z

Product(s) or Data Impacted:  All S-NPP Sensor Data

Date/Time of Initial Impact: February 22, 2023 18:11:00

Date/Time of Expected End: February 22, 2023 20:18:04

Length of Outage:  Approximately 2 hours, 7 minutes.

Details/Specifics of Change: On February 22, 2023 at 17:30:00Z, S-NPP will perform a 2.0 second propulsive Drag Make-up Maneuver (DMU) to maintain the Repeating Ground Track box.

The following observatory systems will be affected on February 22, 2023:

17:04:00Z – 19:11:04z   CERES in Contam-Safe mode, science data will not be available

17:14:00Z – 17:41:06z   OMPS in Decon mode, Science data will not be available

17:19:00Z – 17:42:05z   HRD will be off, data for direct broadcast users will be unavailable.

17:24:00Z – 17:32:04z   S-NPP in Control Frame 2 (DMU) (Delta-V Control Frame)

17:24:00Z – 17:37:04z   S-NPP pointing off-nadir, collected data during that time period may be impacted and not disseminated.