Reports Report 5618bf (Event 5618-2018)

Observer
Name A J
Experience Level 3/5
Remarks Immediately thought it was a fireball -- like have seen on YouTube videos of the one in Russia. Thought it must be meteor from meteor shower happening now.
Location
Address Oakland, CA
Latitude 37° 49' 32.92'' N (37.825812°)
Longitude 122° 15' 11.61'' W (-122.253224°)
Elevation 30.790125m
Time and Duration
Local Date & Time 2018-12-19 17:32 PST
UT Date & Time 2018-12-20 01:32 UT
Duration ≈7.5s
Direction
Moving direction From up right to down left
Descent Angle 261°
Moving
Facing azimuth 235.71°
First azimuth 259.88°
First elevation 37°
Last azimuth 233.75°
Last elevation 23°
Brightness and color
Stellar Magnitude -5
Color Bright glowing pale yellowy cream with a green tinge, especially so at the bright, starlike leading point (the ball itself); the ball then suddenly disappeared (disintegrated?), leaving a bright, whitening contrail with a flat-looking end where the call h
Concurrent Sound
Observation Unknown
Remarks -
Delayed Sound
Observation No
Remarks -
Persistent train
Observation Yes
Duration 99.99s
Length 30°
Remarks See note describing color of fireball for details about smoke trail. Also, The train grew from 15-25 degrees to 30-40 over time (wind seemed to disperse it, elongating it and making it wider and less sharply defined at edges.
Terminal flash
Observation Unknown
Remarks -
Fragmentation
Observation Unknown
Remarks -