Topic:  Metop-B Collision Avoidance In-Plane Maneuver

Date/Time (UTC) Message Issued:  Dec 15, 2020 2310 Z

Product(s) Involved/Affected:  All products from AMSU-A, ASCAT, ATOVS, GRAS, IASI, MHS, AVHRR in the Metop Global Data Service and Regional Data Service was temporarily degraded.  GOME-2 and SEM products were not available.

Date/Time (UTC) Initial Implementation:   Dec 15, 2020 (JDAY 350) 12:05 Z

Date/Time (UTC) Expected End:  Dec 15, 2020 (JDAY 350) 17:09 Z

Length of Outage:  ~ 5 hours

Details/Specifics of Change:       

A Metop-B Collision Avoidance In-Plane Maneuver was performed Dec 15, 2020, preheating beginning at 12:58 Z with the maneuver ending at 14:29 Z that same day.

This maneuver was to avoid collision with Fengyun 1C debris (object number 30802).

The SEM instrument was placed into Maneuver Mode at 12:05 Z on Dec 15, 2020 and returned back to its Normal Operating Mode at 17:09 Z that same day. 

The manual selection of optimal TED and MEPED calibrations for the SEM instrument was performed at 19:07 Z and 19:08 Z respectively.

The GOME instrument timeline ends and mirror parked before the burn at 14:24 UTC on Dec 15, 2020.  The GOME timeline was reactivated at 16:06 Z that same day.

 Data from the outage period will not be recovered nor distributed.  

 Spacecraft Affected:  NOAA-15 ☐  NOAA-18 ☐  NOAA-19 ☐ Metop-A ☐ Metop-B ☒

Web Site(s) for Applicable Information: 

See http://www.ssd.noaa.gov/PS/SATS/messages.html for this and other satellite related messages.
See http://www.eumetsat.int/website/home/Satellites/CurrentSatellites/Metop/index.html for more information Metop satellites

Contact Information for Further Information: 

ESPC Help Desk at ESPCOperations@noaa.gov at 301-817-3880

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