Topic: Suomi-NPP Inclination Adjustment Maneuver (IAM) scheduled for September 27, 2018
Date/Time Issued: September 26, 2018 1816Z
Product(s) or Data Impacted: All S-NPP Sensor Data
Date/Time of Initial Impact: September 27, 2018 16:19:12Z
Date/Time of Expected End: September 27, 2018 18:35:23Z
Length of Outage: See Details.
Details/Specifics of Change: On September 27, 2018 at 16:52:12Z, S-NPP will perform a 131 second duration Inclination Adjustment Maneuver (IAM) with an out-of-plane component to maintain Mean Local Time of the Ascending Node (MLTAN) near 1325 and an along-track component to maintain the Repeating Ground Track (RGT) box.
The following observatory systems will be affected on September 27, 2018.
16:19:12Z M-bM-^@M-^S 18:35:23Z M-BCERES in Contam-Safe mode, science data will not be available
16:29:12Z M-bM-^@M-^S 17:11:25Z M-BOMPS in Decon mode, Science data will not be available
16:34:12Z - 17:12:24Z HRD will be off, data for direct broadcast users will be unavailable
16:39:12Z M-bM-^@M-^S 17:07:23Z M-BS-NPP pointing off-nadir, collected data during that time period may be impacted and not disseminated
17:09:23Z On-board orbit propagator reset to match post-maneuver GPS position and velocity. VIIRS geo-location accuracy may be degraded until this time.
Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov and 301-817-3880
Web Site(s) for applicable information: N/A
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