Topic: (WAIVED OFF) S-NPP Drag Make-Up Maneuver (DMU) scheduled for May 11, 2022
Date/Time Issued: May 11, 2022 1614Z
Product(s) or Data Impacted: (WAIVED OFF) All S-NPP Sensor Data
Date/Time of Initial Impact: May 11,2022 16:53:00
Date/Time of Expected End: May 11,2022 19:00:04
Length of Outage: See Details.
Details/Specifics of Change:
On May 11, 2022 17:19:00Z, S-NPP was to perform a 2.0 second propulsive Inclination Adjustment Maneuver (IAM)
to maintain Mean Local Time of the Ascending Node while controlling repeating Ground Track box. This maneuver was waived off and no slew or burn will occur.
The following observatory systems would have been affected on May 11, 2022 but no longer will be:
16:53:00Z – 19:00:04Z CERES in Contam-Safe mode, science data will not be available
17:03:00Z – 17:30:06Z OMPS in Decon mode, Science data will not be available
17:08:00Z – 17:31:05Z - HRD will be off, data for direct broadcast users will be unavailable
17:13:00Z – 17:19:02Z NPP in Control Frame 2 (DMU) (Delta-V Control Frame)
17:13:00Z – 17:26:04Z 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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