Topic: NOAA-21 Drag Make-up Maneuver (DMU) scheduled for April 26, 2023

Date/Time Issued: April 25, 2023 1603Z

Product(s) or Data Impacted:  All N21 Sensor Data

Date/Time of Initial Impact: April 26, 2023 16:30:00Z

Date/Time of Expected End: April 26, 2023 18:00:00Z

Length of Outage:  Approximately 1.5 Hours

Details/specifics of Change: On April 26, 2023 17:28:00.00z

N21 will perform a 13.25 second propulsive Drag Make-up Maneuver (DMU) to maintain Mean Local Time of the Ascending Node while controlling the Repeating Ground Track box.

The following observatory systems will be affected on April 26, 2023:

17:12:50Z - 17:37:22.00z OMPS in Decon mode, Science data will not be available

17:22:51Z - 17:37:56.00z HRD will be off, data for direct broadcast users will be unavailable

17:22:53Z - 17:36:20.00z N21 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

This message was sent to ESPC.Notification@noaa.gov. You have been sent this and other notifications because you have opted in to receive it. If for any reason, you wish to unsubscribe, please contact ESPC

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

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

This message was sent by ESPC.Notification@noaa.gov. You have been sent this and other notifications because you have opted in to receive it. If for any reason, you wish to unsubscribe, please contact ESPC Help Desk at ESPCOperations@noaa.gov or (301) 817-3880. Please note: it may take up to two business days to process your unsubscribe request.