Topic:  NPP Drag Make-Up Maneuver (DMU) 038 scheduled for October 11, 2023

Date/Time Issued: October 10, 2023 1538Z

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

Date/Time of Initial Impact: October 11, 202316:33:00

Date/Time of Expected End: October 11, 202318:40:04

Length of Outage:  See Details.

Details/Specifics of Change: On October 11, 2023 at 16:59:00Z, S-NPP will perform a 3.0 second propulsive

Drag Make-Up Maneuver (DMU) to maintain the Repeating Ground Track box.

The following observatory systems will be affected on October 11, 2023:

16:33:00Z

 – 18:40:04Z CERES in Contam-Safe mode, science data will not be available

16:43:00Z

 – 17:10:06Z OMPS in Decon mode, Science data will not be available

16:48:00Z

 – 17:11:05Z - HRD will be off, data for direct broadcast users will be unavailable

16:53:00Z

 – 17:01:04Z NPP in Control Frame 2 (DMU) (Delta-V Control Frame)

16:53:00Z

 – 17:06:04Z S-NPP pointing off-nadir, collected data during that time period may be impacted

    and not disseminated

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880

Web Site(s) for applicable information: N/A

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