NOAA 18
Satellite information NOAA 18
| Spacetrack Directory Name | NOAA 18 |
| Follow NOAA 18 | NOAA 18 Tracker |
| Pass predictions NOAA 18 | Pass predictions NOAA 18 |
| Orbit launches |
2005-05-20 g.02:00 (19 years ago)
|
| Days in orbit | 7124 |
| 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) | 98.86° |
| Laps per day | 14 |
| Orbit | LEO (Sun-Synchronous) |
| Height NOAA 18 | 860.28 km |
Additional information NOAA 18
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).
TLE
Average orbit height NOAA 18
Average velocity NOAA 18
Average inclination NOAA 18
Frequency NOAA 18
In the table below we show the frequencies NOAA 18.
| Downlink | Mode |
|---|---|
| 137.9125*/1707.000 MHz | |
| 137.913 MHz | APT |
| 465.988 MHz | BPSK |
| 1544.500 MHz | BPSK |
| 1707.000 MHz | HRPT |
| 137.350 MHz | DSB |
| 2247.484 MHz | BPSK |
| 1698.000 MHz | FMN |
