Reports Report 7139a (Event 7139-2021)

Observer
Name Mike M
Experience Level 2/5
Remarks I was northbound on an ascending road, curving from northwest to northeast. Since I was looking upward while below the top of the hill, there was nothing obstructing my view, and glow from the city lights was blocked. The entire trail and flash at the end were well above the elevation where I have seen commercial fireworks. The nearly vertical trail and flash ruled out it being an aircraft.
Location
Address Sedalia, CO
Latitude 39° 28' 18.09'' N (39.471692°)
Longitude 104° 55' 1.75'' W (-104.917153°)
Elevation 1990.252808m
Time and Duration
Local Date & Time 2021-10-31 00:18 MDT
UT Date & Time 2021-10-31 06:18 UT
Duration ≈1.5s
Direction
Moving direction From up left to down right
Descent Angle 178°
Moving
Facing azimuth 346.57°
First azimuth 347.1°
First elevation 40°
Last azimuth 351.85°
Last elevation 30°
Brightness and color
Stellar Magnitude -12
Color Blue
Concurrent Sound
Observation No
Remarks -
Delayed Sound
Observation No
Remarks -
Persistent train
Observation No
Duration -
Length -
Remarks -
Terminal flash
Observation Yes
Remarks The trail began as a pinpoint, widened as it descended (from my perspective) and ended with a bright circular flash.
Fragmentation
Observation No
Remarks -