The longest and brightest I've ever seen in my 20 years of watching. It lit up the whole valley overcoming the bight light of the nearly full moon. At first I believed it was a flash from someone's camera.
Location
Address
Gardiner, MT
Latitude
44° 59' 15.19'' N (44.987554°)
Longitude
110° 41' 26.45'' W (-110.690681°)
Elevation
1728.651733m
Time and Duration
Local Date & Time
2015-09-26 20:25 MDT
UT Date & Time
2015-09-27 02:25 UT
Duration
≈7.5s
Direction
Moving direction
From up right to down left
Descent Angle
186°
Moving
Facing azimuth
95.28°
First azimuth
98.8°
First elevation
53°
Last azimuth
95.12°
Last elevation
11°
Brightness and color
Stellar Magnitude
-18
Color
Light Green, Light Yellow, White
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
Yes
Duration
99.99s
Length
20°
Remarks
There was a very long lasting smoke trail that was visible in the moon light
