We were sitting on our deck at night and mostly viewed the fireball through the trees on the horizon. It was striking for the amount of light and size.
Location
Address
Missoula, MT
Latitude
46° 54' 11.59'' N (46.903219°)
Longitude
114° 16' 53.29'' W (-114.281469°)
Elevation
1102.8m
Time and Duration
Local Date & Time
2017-12-10 22:15 MST
UT Date & Time
2017-12-11 05:15 UT
Duration
≈1.5s
Direction
Moving direction
From up right to down left
Descent Angle
238°
Moving
Facing azimuth
10°
First azimuth
30°
First elevation
13°
Last azimuth
355°
Last elevation
1°
Brightness and color
Stellar Magnitude
-20
Color
Light Blue, Light Green, White
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
No
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Yes
Remarks
As the trajectory moved across the horizon, it got progressively brighter and then flashed, lighting up the horizon very brightly before burning out.
