The observer was frightened by the light that haven't pay attention to whether there is sound and burst open.
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Photo
Location
Address
, Murmansk Oblast (RU)
Latitude
67° 50' 50.36'' N (67.847321°)
Longitude
35° 11' 30.4'' E (35.191779°)
Elevation
157.208542m
Time and Duration
Local Date & Time
2017-12-14 19:24 MSK
UT Date & Time
2017-12-14 16:24 UT
Duration
≈7.5s
Direction
Moving direction
From up right to down left
Descent Angle
250°
Moving
Facing azimuth
359.23°
First azimuth
15.16°
First elevation
36°
Last azimuth
307.21°
Last elevation
18°
Brightness and color
Stellar Magnitude
-14
Color
Light Blue
Concurrent Sound
Observation
Unknown
Remarks
-
Delayed Sound
Observation
Unknown
Remarks
-
Persistent train
Observation
Yes
Duration
99.99s
Length
-
Remarks
The smoke train was khaki and lasted at least 2000s.