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On 20 Nov. 2018, 9h20m42s(UT), a fireball appeared above 80 km altitude of the mountain
range of Niigata prefecture from which fell high elevation angle to 20.5 km at the end.
This fireball was recorded on four sites TV cameras belonging to SonotaCo network and one still camera.
Mr.M.Ueda calculated orbit and Y.Shiba calculated meteorite fell prediction.
As result, about 1 kg size meteorite was estimated to fall.
The predicted impact area is a thousand meter altitude mountain range around border of Tadami town,
Fukushima-ken and Sanjo-city, Niigata prefecture that distriction is too difficult to search.
This meteoroid was estimated to experience little fragmentation because of its smooth light curve and deceleration characteristics.
Predicted impact area
Ellipse is estimated fallen region
Link
SonotaCo Network discussion(in Japanese)