NOAA-15: Difference between revisions
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== Launch == | == Launch == | ||
Revision as of 05:47, 29 October 2026
NOAA-15, also known as NOAA-K before launch, was a polar-orbiting, NASA-provided Television Infrared Observation Satellite (TIROS) series weather forecasting satellite operated by National Oceanic and Atmospheric Administration (NOAA). NOAA-15 was the latest in the Advanced TIROS-N (ATN) series. It provided support to environmental monitoring by complementing the NOAA/NESS Geostationary Operational Environmental Satellite program (GOES).
Images
On NOAA POES system satellites, the two images are 4 km / pixel smoothed 8-bit images derived from two channels of the advanced very-high-resolution radiometer (AVHRR) sensor. The images are corrected for nearly constant geometric resolution prior to being broadcast; as such, the images are free of distortion caused by the curvature of the Earth.
Of the two images, one is typically long-wave infrared (10.8 micrometers) with the second switching between near-visible (0.86 micrometers) and mid-wave infrared (3.75 micrometers) depending on whether the ground is illuminated by sunlight. However, NOAA can configure the satellite to transmit any two of the AVHRR's image channels.
Frequencies
NOAA 15 - 137.620 MHz
Example of transmission:
Logs:
Launch
It was launched by the Titan 23G launch vehicle on 13 May 1998 at 15:52:04 UTC from Vandenberg Air Force Base, at Vandenberg Space Launch Complex 4 (SLW-4W), NOAA-15 replaced the decommissioned NOAA-12 in an afternoon equator-crossing orbit and is in 2021 semi-operational, in a Sun-synchronous orbit (SSO), at 808.0 km above the Earth, orbiting every 101.20 minutes.
Spacecraft
The goal of the NOAA/NESS polar orbiting program is to provide output products used in meteorological prediction and warning, oceanographic and hydrologic services, and space environment monitoring. The NOAA-I Advanced TIROS-N spacecraft is based on the Defense Meteorological Satellite Program (DMSP Block 5D) spacecraft and is modified version of the TIROS-N spacecraft (NOAA-1 to NOAA-5). The spacecraft structure consists of four components: 1° the Reaction System Support (RSS); 2° the Equipment Support Module (ESM), which has been expanded from the TIROS-N design; 3° the Instrument Mounting Platform (IMP); and 4° the Solar Array (SA).
End of Mission in Real life
In April 2025, NOAA announced that they would suspend POES data - data from NOAA-15 and NOAA-19 - on June 16, 2025, and decommission NOAA-15 on August 12, 2025.
However, on August 9 NOAA-19 encountered a battery failure and was decommissioned early on August 13. As a result, the decommissioning date of NOAA-15 was extended until the week of August 18. NOAA will not deorbit the satellite. Instead, it has been left in orbit and put into a safe electrical state, with the transmitters shut down. NOAA-15 was ultimately decommissioned on August 19, 2025, on at 20:37 UTC.