Topic: S-NPP VIIRS Lunar Calibration Roll Maneuver Scheduled for January 24, 2021
Date/Time Issued: January 22, 2021 1410Z
Product(s) or Data Impacted: All S-NPP Sensor Data
Date/Time of Initial Impact: January 24, 2021 08:00:49Z
Date/Time of Expected End: January 24, 2021 09:02:49Z
Length of Outage: See Details.
Details/Specifics of change: January 24, 2021, S-NPP will perform a spacecraft attitude maneuver for the VIIRS Lunar Calibration, with a roll of -3.29 degrees centered at 08:25:49Z. Science data may be impacted while the spacecraft is pointing off-nadir during the attitude maneuver and the CERES instrument will not provide nominal science data as it will placed in a contamination safe mode. The timeline of events for this maneuver are provided below.
The following observatory systems will be affected on January 24, 2021:
08:00:49 Z – 09:02:49 Z CERES will be in Contam-Safe and Standby, science data will not be available
08:15:49 Z – 08:37:49 Z HRD will be off, data for direct broadcast users will be unavailable
08:20:19 Z – 08:33:20 Z VIIRS encoder offset and gain will be set for Moon observation
08:20:49 Z – 08:32:49 Z S-NPP will be pointing off-nadir, collected data may be impacted and not disseminated
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 unsubscribe request.