Topic:  GCOM-W1 Risk Mitigation Maneuver (RMM) 10/25/23

Date/Time Issued:  October 25, 2023 1344Z

Product(s) or Data Impacted:  GCOM-W1 Data (AMSR-2)

Date/Time of Initial Impact:   October 25, 2023 19:49:51z (JDAY 298)

Date/Time of Expected End:  October 25, 2023 19:50:09z (JDAY 298)

Length of Outage:  Approximately 18 seconds

Details/Specifics of Change: 

• GCOM-W1 will execute a Retrograde Makeup Maneuver (RMM) today to avoid the conjunction with IRIDIUM 33 DEB (38469) as follows:
• Maneuver Date and Time:  Oct 25th, 2023 at 19:50:00 (UTC)
• Burn Magnitude:  + 0.108 m/s
• Burn Duration:  18s   2023/10/25 19:49:51 - 19:50:09 (UTC) 
• RMMs typically result in a data gap due to turning the instrument off to avoid contamination.  Any data gaps will be determined and reported after the maneuver.

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

Web Site(s) for Applicable Information: N/A

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