POES Operational Status

Welcome to the Polar Operational Environmental Satellites (POES) spacecraft status page. This site provides up to date status information on each spacecraft and its various subsystems.

Below are the color designations for each satellite status:

Spacecraft	Operational Status	Status
NOAA-11, -12, -14, -16, -17	Decommissioned	RED
NOAA-15	AM Secondary	GREEN
NOAA-18	PM Secondary	GREEN
NOAA-19	PM Prime Services Mission	GREEN

NOTE:  All LTAN values are valid as of January 04, 2024.

NOAA-15 Spacecraft Status Summary

Spacecraft Letter:   K	International Designation:   1998 030A
Catalog Number:   25338	Launch Date:   05/13/1998
Operational Date:   12/15/1998	Operational Status:  AM Secondary

GAC:   Yes	HRPT:   Yes   STX-2/MSB   1702.5 MHz
LAC:   No	APT:   Yes   VTX-2   137.62 MHz
LTAN:   19:23	Inclination Angle:  98.50 deg
Altitude:  807km	Precession Rate:  1.05 (min/month)
Period:  101.1 (minutes)

Note: On Sep 15, 2018 (18/258) at 0353 UTC, the NOAA-15 AVHRR 3A/3B switching was activated to support snow and ice detection over the Alaska region and will remain in that mode until May 14, 2019 (19/134).

Spacecraft Subsystem Status:

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

* = Spacecraft Issue but No User Impact
** = Investigating Performance Issue which will Impact Users

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:   22:38	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.

Spacecraft Subsystem Status:

Subsystem	Description	Status
ADACS	Attitude Determination and Control System	YELLOW
AMSU-A1	Advanced Microwave Sounding Unit -A1	GREEN **
AMSU-A2	Advanced Microwave Sounding Unit -A2	GREEN
APT/LRPT	Automatic Picture Transmission / Low Rate Picture Transmission	GREEN
AVHRR	Advanced Very High Resolution Radiometer	GREEN
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
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

* = Spacecraft Issue but No User Impact
** = Investigating Performance Issue which will Impact Users

NOAA-19 Spacecraft Status Summary

Spacecraft Letter:   N-PRIME	International Designation:   2009-005-A
Catalog Number:   33591	Launch Date:   02/06/2009
Operational Date:   6/2/2009	Operational Status:  PM Prime Services Mission

GAC:   Yes	HRPT:   Yes   STX-1/LSB   1698.0 MHz
LAC:   No	APT:   Yes   VTX-1   137.1 MHz
LTAN:   21:06	Inclination Angle:  98.70 deg
Altitude:  870km	Precession Rate:  0.77 (min/month)
Period:  102.14 (minutes)

Note: On 1 May 2014 SNPP becomes the NOAA Prime Polar Orbiter PM s/c and NOAA-19 becomes the Prime NOAA Services Mission PM s/c. GAC/L1B/LAC/HRPT data services from NOAA-19 will remain at existing levels.

Spacecraft Subsystem Status:

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

* = Spacecraft Issue but No User Impact
** = Investigating Performance Issue which will Impact Users