Update #2:  Based on updated calculations, NOAA-20 should be re-entering the ground track box by February 4, 2022 at 03:32:56 UTC.

Update #1: This is a reminder for the NOAA-20 Flying out of Nominal Ground Track Box on December 29, 2021 to February 1, 2022

Topic: NOAA-20 Flying out of Nominal Ground Track Box

Date/Time Issued: February 3, 2022 1912
Product(s) or Data Impacted: See list below.
Date/Time of Initial Impact:  December 29, 2021 18:39:51 UTC
Date/Time of Expected End:  February 4, 2022 03:32:56 UTC
Length of Outage:  N/A

Details/Specifics of Change: 

Due to a potential post-maneuver conjunction, NOAA-20 has postponed its Drag Makeup Maneuver (DMU). This will cause NOAA-20 to leave its nominal ground track box on December 29th, crossing the eastern edge. 

This box is +/- 20 kilometers equatorial longitudinal offset from the reference ground track. 

The maximum distance reached outside the eastern edge of the box is expected to be about 10 kilometers. The re-planned Drag Makeup Maneuver (DMU) will be performed on January 13, 2022 at 1628 UTC to correct the drift.

The expected date to return to the nominal ground track box is February 4, 2022. This may vary with the performance of the maneuver. Another notice will be sent when we return to the nominal ground track box.

Contact information for further information: ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880 24x7 or henok.amenu@noaa.gov during normal business hours.

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

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