Topic: NOAA-20 Risk Mitigation Maneuver (RMM)
Date/Time Issued: June 17, 2025 14:09 UTC
Product(s) or Data Impacted: All NOAA-20 Sensor Data
Date/Time of Initial Impact: June 17, 2025 17:57:30 UTC
Date/Time of Expected End: June 17 ,2025 19:00:40 UTC
Length of Outage: See Details.
Details/Specifics of Change: On June 17, 2025 18:23:00 UTC,
NOAA-20 will perform a 3.0 second propulsive Risk Mitigation Maneuver (RMM) to avoid an orbital debris close approach.
The following observatory systems will be affected on June 17, 2025:
17:57:30Z – 19:00:40Z CERES in Contam-Safe mode, science data will not be available
18:07:00Z – 18:33:10Z OMPS in Decon mode, Science data will not be available
18:12:00Z - ? HRD will be off, data for direct broadcast users will be unavailable
18:17:00Z – 18:23:03Z N20 in Control Frame 2 (DMU) (Delta-V Control Frame)
18:17:00Z – 18:30:10Z N20 pointing off-nadir, collected data during that time period may be impacted and not disseminated