From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

NOAA-18 or 19 rendering.jpg
Computer-generated image of NOAA-18 in orbit
Mission typeWeather satellite
COSPAR ID2005-018A
SATCAT no.28654
Mission duration2 years[1]
Spacecraft properties
Spacecraft typeTIROS-N
ManufacturerLockheed Martin
Launch mass1,457 kilograms (3,212 lb)[2]
Power830 watts[3]
Start of mission
Launch dateMay 20, 2005, 10:22:01 (2005-05-20UTC10:22:01Z) UTC[4]
RocketDelta II 7320-10C
Launch siteVandenberg SLC-2W
Orbital parameters
Reference systemGeocentric
Semi-major axis7,230.05 kilometers (4,492.54 mi)[5]
Perigee altitude848 kilometers (527 mi)[5]
Apogee altitude869 kilometers (540 mi)[5]
Inclination99.17 degrees[5]
Period101.97 minutes[5]
EpochJanuary 24, 2015, 12:53:56 UTC[5]
← NOAA-17
NOAA-19 →

NOAA-18, known before launch as NOAA-N, is a weather forecasting satellite run by NOAA. NOAA-N (18) was launched on May 20, 2005,[6] into a sun-synchronous orbit at an altitude of 854 km above the Earth, with an orbital period of 102 minutes.[7] It hosts the AMSU-A, MHS, AVHRR, Space Environment Monitor SEM/2 instrument and High Resolution Infrared Radiation Sounder (HIRS) instruments, as well as the SBUV/2 ozone-monitoring instrument.[8] It is the first NOAA POES satellite to use MHS in place of AMSU-B. NOAA-18 also hosts Cospas-Sarsat payloads.

APT transmission frequency is 137.9125 MHz (NOAA-18 changed frequencies with NOAA-19 on June 23, 2009).[9]

External Links[edit]


  1. ^ Krebs, Gunter. "NOAA 18, 19 (NOAA N, N')". Gunter's Space Page. Retrieved December 9, 2013.
  2. ^ "NOAA 18". National Space Science Data Center. Retrieved December 9, 2013.
  3. ^ "UCS Satellite Database". Union of Concerned Scientists. Retrieved December 8, 2013.
  4. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved December 9, 2013.
  5. ^ a b c d e f g "NOAA 18 Satellite details 2005-018A NORAD 28654". N2YO. January 24, 2015. Retrieved January 25, 2015.
  6. ^ "NOAA-N Prime" (PDF). NP-2008-10-056-GSFC. NASA Goddard Space Flight Center. December 16, 2008. Archived from the original (PDF) on February 16, 2013. Retrieved October 8, 2010.
  7. ^ "Spacecraft Status Summary". Archived from the original on November 18, 2010. Retrieved October 8, 2010.
  8. ^ "NOAA-N" (PDF). Archived from the original (PDF) on March 2, 2012. Retrieved March 7, 2016.
  9. ^ "software to decode APT and WEFAX signals from weather satellites". WXtoImg. Retrieved March 7, 2016.