Reports Report 5113ad (Event 5113-2017)

Name James Y
Experience Level 3/5
Remarks It was hard to guess the height, seemed to move slowly perhaps because much higher than apparent, bright white with glowing tail, moving west to east; a nearby building to my left (southeast) interrupted my view of it, Seemed to be some colors in the tail. As I was getting into my car a couple of minutes later, thought I detected a slight acrid odor which would go with a firework, but I think no firework would move across the sky steadily in this way.
Address Boulder, CO
Latitude 40° 1' 25.52'' N (40.023755°)
Longitude 105° 15' 19.4'' W (-105.25539°)
Elevation 1608.457m
Time and Duration
Local Date & Time 2017-12-14 19:50 MST
UT Date & Time 2017-12-15 02:50 UT
Duration ≈3.5s
Moving direction From up right to down left
Descent Angle 263°
Facing azimuth 99.66°
First azimuth 163.81°
First elevation 45°
Last azimuth 95.53°
Last elevation 36°
Brightness and color
Stellar Magnitude -20
Color White, Orange
Concurrent Sound
Observation No
Remarks -
Delayed Sound
Observation No
Remarks -
Persistent train
Observation Yes
Duration 1s
Length 15°
Remarks A glowing tail with tinge of yellow or oramge, possibly hint of green, not sure
Terminal flash
Observation No
Remarks -
Observation No
Remarks -