Norad ID: 28654
| Spacetrack Directory Name | NOAA 18 |
| Follow NOAA 18 | NOAA 18 Tracker |
| Pass predictions NOAA 18 | Pass predictions NOAA 18 |
| Orbit launches |
|
| Days in orbit | 7765 |
| Country/organisation of origin | USA (US) |
| Starting point | AFWTR (Vandenberg Air Force Base, USA) |
| WWW | Here |
| Categories | |
| Perigee | 840 km |
| Apogee | 861 km |
| Orbit slope (inclination) | 98.81° |
| Laps per day | 14 |
| Orbit | LEO (Sun-Synchronous) |
| Height NOAA 18 | 858.45 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.
| Downlink |
|---|
| 137.9125/1707.000 MHz |