Topic:Â
S-NPP VIIRS Lunar RollÂ
Date/Time Issued:Â
February 26, 2015 1940 UTC
Product(s) or Data Impacted:Â All
Suomi-NPP Sensor Data
Date/Time of Initial Impact: Â
March
1, 00:09:22 UTC
Date/Time of Expected End:Â Â
March
1, 01:11:22 UTC
Length of Outage:Â See
Details.
Details/Specifics of Change:Â Suomi-NPP
will perform a spacecraft attitude
maneuver, for the VIIRS Lunar Calibration, with a roll
of -4.048 degrees
centered at 2015-03-01T00:34:22 UTC. 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 2015 March 1:Â
00:09:22 UTC – 01:11:22 UTC  CERES
will be in Contam-Safe,
science
data will not be available
00:24:22 UTC – 00:46:22 UTC  HRD
will be off, data for direct broadcast users will be
unavailable
00:28:52 UTC – 00:41:53 UTC  VIIRS
encoder offset and gain will be set for Moon
observation
00:29:22 UTC – 00:41:22 UTC 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
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