Topic: N20 OverYaw Maneuver (OYM) scheduled for April 22, 2024

Date/Time Issued: April 22, 2024 1346Z

Product(s) or Data Impacted: All N20 Sensor Data

Date/Time of Initial Impact: April 22,2024 16:08:46

Date/Time of Expected End: April 22,2024 18:26:00

Length of Outage: See Details.

Details/Specifics of Change: On April 22, 2024 16:41:46Z,

N20 will perform a 12 second propulsive OverYaw Maneuver (OYM) to re-establish mission orbit.

The following observatory systems will be affected on April 22, 2024:

16:08:46Z - 18:26:00z CERES will be in Contam-Safe mode, science will not be available

16:18:46Z - 16:55:00z OMPS will be in DECON mode, science will not be available

16:23:46Z - 17:03:00z HRD will be off, data for direct broadcast users will be unavailable

16:28:46Z - 16:41:58z N20 in control frame 2 (OverYaw Maneuver (OYM)) Delta-V control frame

16:28:46Z - 16:58:00z N20 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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