Showing posts with label NE Pacific. Show all posts
Showing posts with label NE Pacific. Show all posts

Monday, 23 March 2026

Airburst above Gulf of Alaska, NE Pacific

2026, March 23. Gulf of Alaska, NE Pacific, Airburst. Coordinates: (54.6N, 144.1W). Time: 19:23UT. Altitude: 35 km. Velocity: 11.48 km/s. Entry angle of approximately 54.1°. Energy: e = 5.1e10. -e = 0.17 or 170,000 kg/TNT. This is the sixth airburst of the year calculated by NASA. Note: A velocity of 11.48 km/s is particularly interesting because it is very close to the Earth's escape velocity (~11.19 km/s). This indicates a "slow" entry, which is characteristic of: Asteroidal origin: Objects coming from the inner solar system often have lower entry speeds. Meteorite potential: Because the velocity is low, the object experiences less intense heating and atmospheric pressure, making it much more likely that fragments survived to reach the ground or ocean as meteorites. A slow, deep-penetrating bolide at 11.48 km/s would create a sustained sonic boom (shockwave) that travels differently through the atmosphere and into the ocean than a high-velocity "disintegrator." With Europe and the USA having sustained rockfalls, it seems an undetected NEO has broken apart, or preliminary debris for an upcoming larger event. 

Marine Animal Disturbance Alert: A watch for cetacean strandings should be noted for Alaska, the surrounding Aleutian Islands and British Columbia. 

David Attenborough