Update #1: On March 20th, 2024, at 17:07:45 UTC, NOAA-20 will execute a propulsive maneuver to begin the rephasing campaign. 

Topic:  NOAA-20 Rephasing Maneuver Burn Planned for March 19th and 20th 2024


Date/Time Issued: March 13, 2024 2049z

Product(s) or Data Impacted:  All NOAA-20 L1 Sensor Data and downstream L2+ Data

Date/Time of Initial Impact: March 19th and 20th, 2024

Length of Outage:  See Details and Special Note below.

Details/Specifics of Change: On March 19th and 20th, 2024 NOAA-20 will perform a sequence of propulsive maneuvers as part of an orbit rephasing effort to provide 180 degree separation between NOAA-20 and NOAA-21. The following observatory systems will be affected by the NOAA-20 rephasing activities on March 19th and 20th 2024:

Special Note: Adherence to +/- 20 km ground track error will be violated while rephasing since

GTE is maintained via consistent orbital altitude/period. This requirement will

have to be relaxed during rephasing.

Equator crossing time should be relatively maintained during phasing (13:30 +/- 10

min), preserving consistent lighting conditions during the drift period.

The drift period will last approximately 16 days, and may be subject to change due to maneuver spacecraft performance outcome or  space environment factors. The satellite will remain in mission point with all instruments on during the drift period. 

Another propulsive maneuver will conclude the drift period and end the rephasing campaign. Further details will be disseminated via an ESPC update notice as those details become available. 

Contact Information for Further  Information: ESPC Operations at ESPCOperations@noaa.gov and 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 request.