Didn't see the beginning; it was so bright it was like a car had suddenly turned it's headlights on us, it was so suddenly bright. I based the first sight angle based on where it seemed the light was coming from.
Location
Address
Alta, WY
Latitude
43° 45' 3.12'' N (43.750868°)
Longitude
110° 43' 25.54'' W (-110.72376°)
Elevation
2071.408447m
Time and Duration
Local Date & Time
2025-05-03 21:31 MDT
UT Date & Time
2025-05-04 03:31 UT
Duration
≈3.5s
Direction
Moving direction
From up left to down right
Descent Angle
168°
Moving
Facing azimuth
340.86°
First azimuth
245.41°
First elevation
36°
Last azimuth
343.28°
Last elevation
3°
Brightness and color
Stellar Magnitude
-19
Color
White
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
No
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Yes
Remarks
Bright as led car headlights on first sight; at last sight as it dipped below the horizon, it was a spiky ball of white light with a long tail.
