| Observer | |
|---|---|
| Name | David C |
| Experience Level | 5/5 |
| Remarks | Lasting about 5 seconds, enough time to notice, reflexively face directly, then pay attention. full trail about 15-20 degrees. Did seem to be moving away in a foreshortened way. |
| Location | |
|---|---|
| Address | Sacramento, CA |
| Latitude | 38° 33' 59.14'' N (38.566427°) |
| Longitude | 121° 27' 46.64'' W (-121.462955°) |
| Elevation | 8.485m |
| Time and Duration | |
|---|---|
| Local Date & Time | 2017-12-21 22:28 PST |
| UT Date & Time | 2017-12-22 06:28 UT |
| Duration | ≈7.5s |
| Direction | |
|---|---|
| Moving direction | From up left to down right |
| Descent Angle | 134° |
| Moving | |
|---|---|
| Facing azimuth | 30.25° |
| First azimuth | 15.45° |
| First elevation | 40° |
| Last azimuth | 49.23° |
| Last elevation | 35° |
| Brightness and color | |
|---|---|
| Stellar Magnitude | -4 |
| Color | Blue, Light Blue, White |
| Concurrent Sound | |
|---|---|
| Observation | No |
| Remarks | - |
| Delayed Sound | |
|---|---|
| Observation | No |
| Remarks | - |
| Persistent train | |
|---|---|
| Observation | No |
| Duration | - |
| Length | - |
| Remarks | - |
| Terminal flash | |
|---|---|
| Observation | Yes |
| Remarks | Appeared foreshortened. Brightness built quickly. Entire bolt in view. When it reach about -2mag suddenly brightened to about less than -5mag bright blue and fragmented. Quickly diminished after fragmentation. Fragmentation was about 1/4 degree in width. |
| Fragmentation | |
|---|---|
| Observation | Yes |
| Remarks | Appeared foreshortened. Brightness built quickly. Entire bolt in view. When it reach about -2mag suddenly brightened to about less than -5mag bright blue and fragmented. Quickly diminished after fragmentation. Fragmentation was about 1/4 degree in width. |