I viewed this from my back door on a cloudy evening (a storm was moving into Denver) and the green glow field was quite wide around the fireball. It only lasted a short time, but was quite intense
Location
Address
Centennial, CO
Latitude
39° 35' 56.3'' N (39.598972°)
Longitude
104° 58' 44.4'' W (-104.979°)
Elevation
1679.908m
Time and Duration
Local Date & Time
2018-01-20 19:27 MST
UT Date & Time
2018-01-21 02:27 UT
Duration
≈1.5s
Direction
Moving direction
From up right to down left
Descent Angle
241°
Moving
Facing azimuth
-
First azimuth
14.76°
First elevation
45°
Last azimuth
357.68°
Last elevation
30°
Brightness and color
Stellar Magnitude
-9
Color
Green
Concurrent Sound
Observation
Unknown
Remarks
-
Delayed Sound
Observation
Unknown
Remarks
-
Persistent train
Observation
Yes
Duration
0.5s
Length
10°
Remarks
Greenish Glow all around the ball, then after the ball "went out", the trail glowed for approx. .5 sec.
