| 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 | - |
| 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 | Yes |
| Remarks | The tip of the train (the end where bright sun-like fireball had been) appeared bifurcated for a couple of minutes, before the wind really seemed to stretch and turn and fuzz-up the train. |