NOAA 18

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NOAA 18 is classified as:

NORAD ID: 28654

Int'l Code: 2005-018A

Perigee: 846.1 km

Apogee: 867.4 km

Inclination: 98.9 °

Period: 101.9 minutes

Semi major axis: 7227 km

RCS: 5.2629 m² (large)

Launch date: May 20, 2005
Source: United States (US)
Launch site: AIR FORCE WESTERN TEST RANGE (AFWTR)

Uplink (MHz):
Downlink (MHz): 137.9125/1707.000
Beacon (MHz):
Mode:
Call sign:
Status:

NOAA 18, known before launch as NOAA-N, is a weather forecasting satellite run by NOAA. NOAA-N (18) was launched 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. NOAA 18 is the first NOAA POES satellite to use MHS in place of AMSU-B. APT transmission frequency is 137.9125 MHz (NOAA-18 changed frequencies with NOAA-19 on June 23, 2009).

1 28654U 05018A   23034.15424169  .00000191  00000-0  12641-3 0  9991
2 28654  98.9245 109.1321 0014732  42.7896 317.4420 14.12852967912642

Source of the keplerian elements: Caltech