|Spacetrack Directory Name||NOAA 18|
|Follow NOAA 18||NOAA 18 Tracker|
|Pass predictions NOAA 18||Pass predictions NOAA 18|
|Orbit launches||2005-05-20 (18 years ago)|
|Days in orbit||6767|
|Country/organisation of origin||USA (US)|
|Starting point||AFWTR (Vandenberg Air Force Base, USA)|
|Orbit slope (inclination)||98.9°|
|Laps per day||14|
|Height NOAA 18||861.19 km|
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, into a sun-synchronous orbit at an altitude of 854 km above the Earth, with an orbital period of 102 minutes. 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. 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).
In the table below we show the frequencies NOAA 18.