Reports Report 4723a (Event 4723-2017)

Name David E
Experience Level 1/5
Remarks This would be my first time actually attempting any of this, I felt the need to help in any way I could, instead of sitting back wondering. I'd like to search for it on my own too, but I might as well leave it to the experts. Maybe. ;)
Address Denver, CO
Latitude 39° 46' 38.48'' N (39.777356°)
Longitude 104° 57' 2.84'' W (-104.950788°)
Elevation 1588.024m
Time and Duration
Local Date & Time 2017-10-01 21:00 MST
UT Date & Time 2017-10-02 03:00 UT
Duration ≈3.5s
Moving direction From up left to down right
Descent Angle 138°
Facing azimuth 347.6°
First azimuth 347.6°
First elevation 65°
Last azimuth 347.6°
Last elevation 50°
Brightness and color
Stellar Magnitude -5
Color White
Concurrent Sound
Observation Unknown
Remarks -
Delayed Sound
Observation Unknown
Remarks -
Persistent train
Observation Yes
Duration 5s
Length 99.99°
Remarks Became noticable with flash, smoke trail was noticable, enough to nudge others to look. Lasted about 5 seconds. It twinkled a bit and flashed once more before disappearing. Almost looked like an elongated tadpole.
Terminal flash
Observation Unknown
Remarks -
Observation Unknown
Remarks -