Topic:  S-NPP Risk Mitigation Maneuver (RMM) scheduled for May 8, 2023

Date/Time Issued: May 8, 2023 0417Z

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

Date/Time of Initial Impact: May 8, 2023  08:44:00Z

Date/Time of Expected End: May 8, 2023  20:16:04Z

Length of Outage:  See Details.

Details/Specifics of Change: On May 8, 2023 at 09:10:00Z, S-NPP will perform a 0.8 second propulsive Risk Mitigation Maneuver (RMM) to provide collision avoidance. The Backup time is 18:35:00Z.

The following observatory systems will be affected on May 8, 2023.

Primary: 08:44:00z - 10:51:04z or as needed Backup: 18:09:00z - 20:16:04z

  CERES in Contam-Safe mode, science data will not be available

Primary: 08:54:00z - 09:21:06z or as needed Backup: 18:19:00z – 18:46:06z

  OMPS in Decon mode, Science data will not be available

Primary: 08:59:00z - 09:22:05z or as needed Backup: 18:24:00z - 18:47:05z

  HRD will be off, data for direct broadcast users will be unavailable

Contact for Further Info.: ESPC Operations at at 301-817-3880
Web Site(s) for applicable information: N/A
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