Directory of U.S. Military Rockets and Missiles
Appendix 3: Space Vehicles
Copyright © 2024 Andreas Parsch

Ball Aerospace WSF-M

In the mid-2010s, the U.S. Air Force defined the requirements for a new generation of weather and environmental monitoring satellites under the WSF (Weather System Follow-on) program. In 2017, Ball Aerospace received the prime contract to build the first series of such satellites, labeled WSF-M (Weather System Follow-on - Microwave).

The mission payloads of a WSF-M satellite are a passive microwave imaging radiometer, and an energetic charged particle (ECP) sensor. WSF-M1 was launched in April 2024, and operates in a sun-synchronous Low Earth Orbit.

Image: Ball Aerospace

Name Intl. Designation Launch Notes

Launch dates of the WSF-M series

A second satellite, WSF-M2, has been ordered in 2023, and is planned to be launched in 2028.

Main Sources

[1] Wikipedia: Weather System Follow-on Microwave
[2] Gunter Krebs: WSF-M 1, 2
[3] USSF: Weather System Follow-on Microwave Program Passes Critical Design Review and Milestone B

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Last Updated: 15 April 2024