Space weather Observations at L1 to Advance Readiness - 1
SOLAR-1 satellite | |
| Names | Space Weather Follow On-Lagrange 1 (SWFO-L1) |
|---|---|
| Mission type | Space weather |
| Operator | NOAA |
| COSPAR ID | 2025-215B |
| SATCAT no. | 65726 |
| Start of mission | |
| Launch date | 24 September 2025, 11:30 UTC |
| Rocket | Falcon 9 Block 5 |
| Launch site | Kennedy Space Center, LC-39A |
| Contractor | SpaceX |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | L1 |
| Instruments | |
| Solar Wind Instrument Suite (SWIS) Magnetometer Solar Wind Plasma Sensor (SWiPS) Compact Coronagraph (CCOR) Supra-Thermal Ion Sensor (STIS) | |
|
Space Weather Follow On program | |
SOLAR-1 (Space weather Observations at L1 to Advance Readiness – 1) is a spacecraft mission placed at the Sun–Earth L1 Lagrange point, a location between the Earth and the Sun, to monitor signs of solar storms which may pose harm to Earth's telecommunication network. This allows SOLAR-1 to continuously watch the solar wind and energetic particles heading for Earth. The spacecraft is operated by the National Oceanic and Atmospheric Administration (NOAA). It was launched on September 24, 2025.
SOLAR-1 was previously named SWFO-L1 (Space Weather Follow On-Lagrange 1) prior to its arrival at L1 on January 23, 2026, and is scheduled to become operational in early 2026.