![]() Computer-generated image of NOAA-18 in orbit | |||||||||||||||||||
Names | NOAA-N | ||||||||||||||||||
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Mission type | Weather | ||||||||||||||||||
Operator | NOAA | ||||||||||||||||||
COSPAR ID | 2005-018A | ||||||||||||||||||
SATCAT no. | 28654 | ||||||||||||||||||
Mission duration | 2 years (planned) [1] 19 years, 3 months (elapsed) | ||||||||||||||||||
Spacecraft properties | |||||||||||||||||||
Spacecraft type | TIROS | ||||||||||||||||||
Bus | Advanced TIROS-N | ||||||||||||||||||
Manufacturer | Lockheed Martin Space | ||||||||||||||||||
Launch mass | 2,232 kg (4,921 lb) [2] | ||||||||||||||||||
Dry mass | 1479 kg | ||||||||||||||||||
Dimensions | 4.19 m (13.7 ft) of long 1.88 m (6 ft 2 in) of diameter 2.73 by 6.14 m (solar array) | ||||||||||||||||||
Power | 833 watts | ||||||||||||||||||
Start of mission | |||||||||||||||||||
Launch date | 20 May 2005, 10:22:01 UTC[4] | ||||||||||||||||||
Rocket | Delta II 7320-10C (Delta D312) | ||||||||||||||||||
Launch site | Vandenberg, SLC-2W | ||||||||||||||||||
Contractor | Lockheed Martin Space | ||||||||||||||||||
Entered service | 30 August 2005 [3] | ||||||||||||||||||
Orbital parameters | |||||||||||||||||||
Reference system | Geocentric orbit[5] | ||||||||||||||||||
Regime | Sun-synchronous orbit | ||||||||||||||||||
Altitude | 854 km (531 mi) | ||||||||||||||||||
Inclination | 98.74° | ||||||||||||||||||
Period | 102.12 minutes | ||||||||||||||||||
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NOAA-18, also known as NOAA-N before launch, is an operational, polar orbiting, weather satellite series (NOAA K-N) operated by the National Environmental Satellite Service (NESS) of the National Oceanic and Atmospheric Administration (NOAA). NOAA-18 also continued the series of Advanced TIROS-N (ATN) spacecraft begun with the launch of NOAA-8 (NOAA-E) in 1983 but with additional new and improved instrumentation over the NOAA A-M series and a new launch vehicle (Titan 23G). NOAA-18 is in an afternoon equator-crossing orbit and replaced NOAA-17 as the prime afternoon spacecraft.[6]
Trajectory
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