Reports Report 451cv (Event 451-2015)

Observer
Name G C
Experience Level 1/5
Remarks One of the most interesting celestial events I've ever witnessed. I was surprised by the length of time for which I observed this. All other experiences have been brief flashes.
Location
Address Salt Lake City, UT
Latitude 40° 44' 17.6'' N (40.738223°)
Longitude 111° 51' 3.66'' W (-111.851017°)
Elevation 1370.672119m
Time and Duration
Local Date & Time 2015-02-23 22:55 MST
UT Date & Time 2015-02-24 05:55 UT
Duration ≈20s
Direction
Moving direction From up to down
Descent Angle 180°
Moving
Facing azimuth 0.36°
First azimuth 359.74°
First elevation 71°
Last azimuth 359.7°
Last elevation 13°
Brightness and color
Stellar Magnitude -8
Color White, green, red spots falling off
Concurrent Sound
Observation No
Remarks -
Delayed Sound
Observation No
Remarks -
Persistent train
Observation Yes
Duration 20s
Length 30°
Remarks A long train evident when I first noticed in the northern sky, with several smaller trains that made it appear it was breaking up, although the smaller pieces and trains kept falling in tandem with the largest. All were visible until they dipped below my visible horizon.
Terminal flash
Observation Unknown
Remarks -
Fragmentation
Observation Yes
Remarks Several smaller pieces and trains were falling in tandem with the brightest, longest piece and train.