On November 7, 2020, around 21h 27min UT, a very bright fireball was observed and caught on camera over Scandinavia. Witnesses which were close to the trajectory were affected by cloudy skies and did not see the fireball, but some heard a “deep exploding sounds” or “long rumbling sounds like thunder or a motor“.
The event has been caught on cameras, some associated to a meteor observing network like the Norsk Meteornettwerk or by CCTV video recordings. Those show a slow moving meteor lasting a few seconds and which brightness lit up the ground and the sky. Another video is available here.
According to the Norsk Meteornettverk calculations and recording, this sporadic meteor entered the Earth atmosphere at a 17.4 km/s speed and a 70.4° inclination. It became bright when it was 100 km West of Stockholm and 15 km North of Västerås (59,731° N ; 16,465°E), while its altitude was ~83 km. It then traveled North-East with a 65° azimuth and disappeared at a 17km altitude, 45 km West of Uppsala (59,819°N ; 16,846°E).
The extraterrestrial object that entered the Earth’s atmosphere could also be measured by infrasound. A typical signature of a fireball was identified in the waveform of five stations of the International Monitoring System of the Comprehensive Nuclear-Test-Ban Treaty Organisation.
In the course of the NEMO (NEar real-time MOnitoring system) project, a source energy of the entering asteroid of about 180 t TNT was calculated by Esther Drolshagen and Theresa Ott. With the velocity of 17.4 km/s computed by the Norsk Meteornettverk and an assumed density of 3000 kg/m3 they found that the size would be around 1.5 m diameter, with a mass of about 5.5 t!
According to Strewnify a meteorite drop is likely, they calculated a strewnfield, which was published here. You can use it to go hunt for meteorites yourself but please be careful traveling in these times.
UPDATE [04/02/2021] : According to Jim Gage (Västerås Astronomi-och RymdforskningsFörening), several small iron/nickel meteorites (1 to 6 mm dimensions) associated to this fireball were recovered on November 22nd in the calculated strewnfield. Searches should go on when the snow will have melted in the area.
UPDATE [02/03/2021] : The probably main iron meteorite weighting 14 kg and which dimensions are close to 30 cm long has been discovered by two privately practicing geologists, Andreas Forsberg and Anders Zetterqvist. It is currently at the Swedish Museum of Natural History for analysis. The two discoverers did look for it for weeks, only finding millimeter-sized pieces of meteorites, until they realized this piece had made an unusual ground landing, bouncing on a rock, digging a meter-long track in the ground before being expulsed again by hitting a root! This explains why it was found 70 m from all other meteorites fragments.
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