Reports Report 3291bp (Event 3291-2023)

Observer
Name Ken L
Experience Level 3/5
Remarks I am a photographer of sky phenomena, such as lightning and atmospheric optics. The event was too brief for me to photograph, but I did shoot a still image of the sky within a minute of the event in order to remind myself of my location and the relative position of the event in the sky. I have never seen a daylight fireball before this - the sky was perfectly clear, and I have no doubt that it was in fact a fireball. Feel free to contact me for more detail or to see my photo. I was excited by the event, and particularly to be able to hear it. There was no audible "report" or explosion, so it was perhaps some distance away, but close enough for me to hear it definitely.
Location
Address Broomfield, CO
Latitude 39° 56' 23.04'' N (39.939733°)
Longitude 105° 3' 4.41'' W (-105.051226°)
Elevation 1628.640747m
Time and Duration
Local Date & Time 2023-07-01 10:57 MDT
UT Date & Time 2023-07-01 16:57 UT
Duration ≈1.5s
Direction
Moving direction From up right to down left
Descent Angle 189°
Moving
Facing azimuth 44.16°
First azimuth 46.22°
First elevation 19°
Last azimuth 41.12°
Last elevation 13°
Brightness and color
Stellar Magnitude -17
Color Blue, White
Concurrent Sound
Observation Yes
Remarks ffffssssssss, not whistling, but more of a hissing
Delayed Sound
Observation No
Remarks -
Persistent train
Observation No
Duration -
Length -
Remarks -
Terminal flash
Observation No
Remarks -
Fragmentation
Observation No
Remarks -