We were driving on the highway in a hilly area when we saw it, so my angles of observation may be slightly off. However I could see the lights of the nearest town which helped to orient.
Location
Address
Saint Mary, MT
Latitude
48° 41' 36.89'' N (48.693581°)
Longitude
113° 23' 14.65'' W (-113.387403°)
Elevation
1758.72937m
Time and Duration
Local Date & Time
2024-09-05 05:00 MDT
UT Date & Time
2024-09-05 11:00 UT
Duration
≈1.5s
Direction
Moving direction
From up right to down left
Descent Angle
220°
Moving
Facing azimuth
337.3°
First azimuth
336.04°
First elevation
24°
Last azimuth
321.33°
Last elevation
15°
Brightness and color
Stellar Magnitude
-7
Color
Orange, Yellow, Red, White
Concurrent Sound
Observation
Unknown
Remarks
-
Delayed Sound
Observation
Unknown
Remarks
-
Persistent train
Observation
No
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Yes
Remarks
An increase in the apparent diameter of the object and change in brightness and color to orange/red
