I was impressed by the duration and the white/blue color of the object. It is the longest I have ever seen. And the fact that it was traveling northward above the Mission Mountains on a clear night made it all the more beautiful.
Location
Address
Polson, MT
Latitude
47° 40' 35.98'' N (47.676661°)
Longitude
114° 10' 19.08'' W (-114.171967°)
Elevation
935.64m
Time and Duration
Local Date & Time
2017-05-20 21:45 MDT
UT Date & Time
2017-05-21 03:45 UT
Duration
≈7.5s
Direction
Moving direction
From down right to up left
Descent Angle
273°
Moving
Facing azimuth
91.39°
First azimuth
135.59°
First elevation
60°
Last azimuth
13.4°
Last elevation
33°
Brightness and color
Stellar Magnitude
-7
Color
White
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
Yes
Duration
10s
Length
15°
Remarks
White blue train that the brightness persisted then faded rapidly at the back
Terminal flash
Observation
No
Remarks
-
Fragmentation
Observation
Yes
Remarks
It broke into two pieces at the moment. One following the other, not side by side.
