NOAA-18 Operational Status

Below is the up-to-date operational status of the NOAA-18 spacecraft and its various subsystems.

NOAA-18 Spacecraft Status Summary

Spacecraft Letter:   N	International Designation:   2005018A
Catalog Number:   28654	Launch Date:   05/20/2005
Operational Date:   8/30/2005	Operational Status:  PM Secondary

GAC:   Yes	HRPT:   Yes   STX-3/HSB   1707.0 MHz
LAC:   No	APT:   Yes   VTX-2   137.9125 MHz
LTAN:   22:37	Inclination Angle:  98.74 deg
Altitude:  854km	Precession Rate:  3.52 (min/month)
Period:  102.12 (minutes)

Note: All NOAA-18 MIMU laser gyros have failed; operating RGYRO GYE mode since August 9, 2017 (17/229). Estimated yaw errors ± 0.5 degrees. AVHRR imagery at scan edges will show geolocation errors but usable.

Subsystem Status:

Subsystem	Description	Status
ADACS	Attitude Determination and Control System	YELLOW
ADCS	Advanced Data Collection System	N/A
AMSU-A1	Advanced Microwave Sounding Unit -A1	GREEN
AMSU-A2	Advanced Microwave Sounding Unit -A2	GREEN
AMSU-B	Advanced Microwave Sounding Unit -B	N/A
APT/LRPT	Automatic Picture Transmission / Low Rate Picture Transmission	GREEN
AVHRR	Advanced Very High Resolution Radiometer	YELLOW
COMM	Communications	GREEN
DCS	Data Collection System	GREEN
EPS	Electrical Power System	GREEN
HIRS	High Resolution Infrared Radiation Sounder	RED
MHS	Microwave Humidity Sounder	RED
SAR	Search and Rescue	GREEN
SARP	Search and Rescue Processor	GREEN
SARR	Search and Rescue Repeater	GREEN
SBUV	Solar Backscatter Ultraviolet Radiometer	RED
SEM	Space Environment Monitor	YELLOW
TCC	Telemetry, Command & Control	GREEN
THERM	Thermal Control System	GREEN