Sierra Nevada High-Velocity Entry (cneos-fb-04)
At 2026-09-18 08:41:02 UTC, U.S. Government infrasound and geostationary lightning mapper sensors recorded bolide cneos-fb-04 entering Earth's atmosphere above (37.20°, -118.60°). Traveling along an ECEF 3D velocity vector of (vx=-16.1, vy=19.2, vz=-8.4) km/s (speed 26.40 km/s), hydrodynamic stagnation ram pressure peaked at 12.03 MPa at 34.1 km altitude, triggering catastrophic fragmentation with 1.92e+13 Joules radiated optical energy and 4.60 kilotons TNT total acoustic-kinetic yield.
Signed Geodetic Coordinates & 3D Velocity Vector
Atmospheric Bolide Frequently Asked Questions
Where did CNEOS bolide cneos-fb-04 detonate in the atmosphere?
Bolide cneos-fb-04 reached peak aerodynamic breakup at 34.1 km altitude over signed coordinates (37.20°, -118.60°) on 2026-09-18 08:41:02 UTC.
How is the 3D entry vector (-16.1, 19.2, -8.4) km/s used in CesiumJS?
Meteors.ai converts the Earth-Centered Earth-Fixed (ECEF) velocity vector into a 3D atmospheric entry ray on our NASA GIBS WMTS globe, illustrating the exact entry azimuth and airburst altitude (34.1 km).
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