Observer | |
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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 | |
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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 | |
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Local Date & Time | 2017-12-21 22:28 PST |
UT Date & Time | 2017-12-22 06:28 UT |
Duration | ≈7.5s |
Direction | |
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Moving direction | From up left to down right |
Descent Angle | 134° |
Moving | |
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Facing azimuth | 30.25° |
First azimuth | 15.45° |
First elevation | 40° |
Last azimuth | 49.23° |
Last elevation | 35° |
Brightness and color | |
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Stellar Magnitude | -4 |
Color | Blue, Light Blue, White |
Concurrent Sound | |
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Observation | No |
Remarks | - |
Delayed Sound | |
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Observation | No |
Remarks | - |
Persistent train | |
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Observation | No |
Duration | - |
Length | - |
Remarks | - |
Terminal flash | |
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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 | |
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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. |