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Observer Name Mike C Experience Level 1/5 Remarks Shortly after seeing this the local fire department got called out for what someone reported as a possible emergency flare from the Boulder reservoir. I don't think it was a flare as a flare from the reservoir would not be seen from where I was.
Location Address Boulder, CO Latitude 40° 2' 8.73'' N (40.04°) Longitude 105° 15' 15.4'' W (-105.25°) Elevation 1617.49m
Time and Duration Local Date & Time 2021-12-29 20:45 MST UT Date & Time 2021-12-30 03:45 UT Duration ≈3.5s
Direction Moving direction From up right to down left Descent Angle 254°
Moving Facing azimuth 247.26° First azimuth 337.51° First elevation 45° Last azimuth 237.95° Last elevation 31°
Brightness and color Stellar Magnitude -13 Color Green
Concurrent Sound Observation No Remarks -
Delayed Sound Observation No Remarks -
Persistent train Observation No Duration - Length - Remarks -
Terminal flash Observation No Remarks -
Fragmentation Observation No Remarks -
