NOAA 11

USA

Also called NOAA H

Launch data:

Designation	19531 / 88089A
Launch date	24 Sep 1988
Launch site	Va, SLC-3W
Launch vehicle	Atlas-E/Star-37S-ISS
Mission	Meteorology
Earth orbit on:
Perigee/Apogee	814/856 km
Inclination	99.059°
Period	101.9 min

Studies ozone

The attitude control subsystem lost two of its four gyros and was operated successfully with specialized onboard software. Several instruments failed in 1994 (AVHRR, SBUV/2, etc.) It was reactivedted to provide HIRS/2 after the partial failure of this instrument on NOAA 12

End of life

Out of service	Mar 1995 but reactivated in May 1997
Cause	replaced by NOAA 14

APT downlink freq.	137.620 MHz (inoperative)
HRPT downlink freq.	1707.0 MHz
Beacon	137.770 MHz (inoperative?)

Ref: #15 - update: 06.09.08