Topic: Metop-B Collision Avoidance In-Plane Maneuver

Date/Time (UTC) Message Issued: April 17, 2023 0107Z

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 will be temporarily degraded.
GOME-2 and SEM products will not be available.
Date/Time (UTC) Initial Implementation:
Apr 17, 2023 (JDAY 107) 21:24 UTC

Date/Time (UTC) Expected End:
Apr 17, 2023 (JDAY 108) 02:28 UTC

Length of Outage: ~ 5 hours

Details/Specifics of Change:      
A Metop-B Collision Avoidance In-Plane Maneuver will be performed Apr 17, 2023, preheating
beginning at 23:39 UTC with the maneuver ending at 01:22 UTC the following day.
This maneuver is to avoid collision with object number 82586.
The SEM instrument will be placed into Maneuver Mode at 21:24 UTC on Apr 17, 2023 and returned
back to its Normal Operating Mode at 02:28 UTC the following day.
The manual selection of optimal TED and MEPED calibrations for the SEM instrument will be
performed at 04:26 UTC on Apr 18, 2023.
The GOME instrument timeline ends and mirror parked before the burn at 23:32 UTC on Apr 17, 2023.
The GOME timeline will be reactivated at 01:14 UTC the following day.
Data from the outage period will not be recovered nor distributed.  
Spacecraft Affected: NOAA-15 ☐ NOAA-18 ☐ NOAA-19 ☐ Metop-A ☐ Metop-B ☒

Contact Information for Further Information: ESPC Help Desk at at 301-817-3880

Web Site(s) for Applicable Information:
See for this and other satellite related messages.
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