Maneuver List

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J1/N20 2019 2018 2017

SNPP 2019

DateOrbitPhase AngleManeuver Time
(UTC)
VIIRS SDR/EDR Team Blog NoticeEvent TimelineGeolocation error
06/13/19 (2019164) 03:23:49 to 03:28:53z VIIRS Lunar Observation and Sector Rotation (no maneuver) Timeline: (UTC)
  • orbit 39509
  • The lunar observation is centered at 03:26:21z.
05/14/19 (2019134) 21:10:55 - 21:23:54 VIIRS Lunar Cal (with Roll Maneuver) Timeline: (UTC)
  • 21:10:55 - VIIRS encoder offset shift to 26790
  • 21:11:25 - Start of S/C slew roll to -3.1 degrees
  • 21:14:25 - Finish slew maneuver, start 4-minute dwell
  • 21:16:25 - Center of dwell
  • 21:18:25 - Start return slew maneuver
  • 21:23:25 - Return to nadir Attitude
  • 21:23:54 - VIIRS encoder offset set back to 0
  • 20:51:25 - CERES commanded to Contam Safe
  • 21:53:25 - CERES commanded to CrossTrack
04/15/19 (2019105) 16:46:07 - 16:51:11 VIIRS Lunar Cal (without a roll) Timeline: (UTC)
  • 16:46:07: VIIRS DC Off
  • 16:46:08: VIIRS Encoder Offset Shift to 26790
  • 16:46:09: VIIRS Gain Set to Fixed High Gain
  • 16:48:39: Center of Dwell
  • 16:51:08: VIIRS Encoder Offset to 0
  • 16:51:09: VIIRS DC Off
  • 16:51:11: VIIRS Gain Set to Auto Gain
16:42 - contains corrupt reflectance data
04/10/19 (2019100) 15:40:00 - 17:47:04 DMU Maneuver Timeline: (UTC)
  • CERES ContamSafe: 15:40:00 - 17:47:04
  • OMPS Decon: 15:50:00 – 16:17:06
  • 16:00:00: Slew Start
  • 16:06:00: Delta-V Burn Start
  • 16:06:01: Delta-V Burn End
  • 16:13:04: Returned to Mission Point Mode
16:00/16:06 contain geolocation artifacts
03/17/19 (2019076) 08:58:29 - 09:03:32 VIIRS Lunar Calibration (Not Maneuver) Instrument(s) Affected:VIIRS
Timeline: (UTC)
  • 08:58:29 - VIIRS Encoder Offset Shift to 26790
  • 08:58:30 - VIIRS Gain set to VIIRS High Gain
  • 09:01:00 - Center of Dwell
  • 09:03:29 - VIIRS Encoder Offset Set Back to 0
  • 09:03:32 - VIIRS Gain set to Auto Gain
02/15/19 (2019046) -1.677 21:49:35 - 21:56:34 Lunar Calibration Roll Maneuver Instrument(s) Affected: ATMS, CERES, CrIS, OMPS, VIIRS
Timeline: (UTC)
  • 21:49:35 - VIIRS Encoder Offset Shift to 26790
  • 21:50:05 - Start of S/C Slew Roll
  • 21:51:05 - Finish Slew Maneuver, Start 4-minute Dwell
  • 21:53:05 - 01:04:26 - Center of Dwell
  • 21:55:05 - Start Return Slew Maneuver
  • 21:56:05 - Return to Nominal Mission Pointing
  • 21:56:34 - VIIRS Encoder Offset Set Back to 0
21:48 - corrupt reflectance data
01/17/19 (2019017) -5.848 09:02:31 - 09:15:30 Lunar Calibration Roll Maneuver Instrument(s) Affected: ATMS, CERES, CrIS, OMPS, VIIRS
Timeline: (UTC)
  • 09:02:31 - VIIRS Encoder Offset Shift to 26790
  • 09:03:01 - Start of S/C Slew Roll
  • 09:06:01 - Finish Slew Maneuver, Start 4-minute Dwell
  • 09:08:01 - 01:04:26 - Center of Dwell
  • 09:10:01 - Start Return Slew Maneuver
  • 09:15:01 - Return to Nominal Mission Pointing
  • 09:15:30 - VIIRS Encoder Offset Set Back to 0