| Observer | |
|---|---|
| Name | Steve M | 
| Experience Level | 2/5 | 
| Remarks | Exceptionally bright - enough to immediately draw my attention while driving. Because I was in a car I didn't hear anything but I observed a couple of purple emerging from a house to look at the plunge, so there may have been sound. | 
| Location | |
|---|---|
| Address | Berkeley, CA | 
| Latitude | 37° 52' 40.41'' N (37.877891°) | 
| Longitude | 122° 16' 24.1'' W (-122.273361°) | 
| Elevation | 60.985748m | 
| Time and Duration | |
|---|---|
| Local Date & Time | 2018-12-19 17:34 PST | 
| UT Date & Time | 2018-12-20 01:34 UT | 
| Duration | ≈1.5s | 
| Direction | |
|---|---|
| Moving direction | From up right to down left | 
| Descent Angle | 196° | 
| Moving | |
|---|---|
| Facing azimuth | 256.12° | 
| First azimuth | 260.37° | 
| First elevation | 35° | 
| Last azimuth | 258.97° | 
| Last elevation | 20° | 
| Brightness and color | |
|---|---|
| Stellar Magnitude | -18 | 
| Color | White | 
| Concurrent Sound | |
|---|---|
| Observation | Unknown | 
| Remarks | - | 
| Delayed Sound | |
|---|---|
| Observation | Unknown | 
| Remarks | - | 
| Persistent train | |
|---|---|
| Observation | Yes | 
| Duration | 99s | 
| Length | 10° | 
| Remarks | Glowing, persisted for at least 10 minutes. Initially straight, gradually distorted but did not dissipate - even after several minutes the train was roughly the same dimensions, just twisted. | 
| Terminal flash | |
|---|---|
| Observation | Yes | 
| Remarks | Very brief, bright white flash immediately followed by a glowing train of smoke | 
| Fragmentation | |
|---|---|
| Observation | No | 
| Remarks | - |