Topic: S-NPP VIIRS Lunar Roll
Date/Time Issued: January 14, 2016 18:00:00Z
Product(s) or Data Impacted: All S-NPP Sensor Data
Date/Time of Initial Impact: January 19, 2016 22:29:45Z
Date/Time of Expected End: January 19, 2016 23:31:45Z
Length of Outage: See Details.
Details/Specifics of Change:S-NPP will perform a spacecraft attitude maneuver, for the VIIRS Lunar Calibration, with a roll of -5.3022 degrees centered at 2016-01-19 at 22:54:45Z. 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 2016, January 19.
22:29:45Z – 23:31:45Z CERES will be in Contam-Safe, science data will not be available
22:44:45Z – 23:06:45Z HRD will be off, data for direct broadcast users will be unavailable
22:49:15Z – 23:02:16Z VIIRS encoder offset and gain will be set for Moon observation
22:49:45Z – 23:01:45Z S-NPP will be pointing off-nadir and collected data during that time period may be impacted
Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880
Web Site(s) for applicable information: N/A