The apparent speed of the object was slower than a normal meteor, but faster than an airplane. I estimated it as 1000 mph at 5 miles range, but without knowing its true range these numbers are likely well off the mark.
Location
Address
Sheridan, WY
Latitude
44° 45' 30.54'' N (44.758484°)
Longitude
106° 56' 9.33'' W (-106.935926°)
Elevation
1193.554443m
Time and Duration
Local Date & Time
2015-03-11 06:00 MDT
UT Date & Time
2015-03-11 12:00 UT
Duration
≈3.5s
Direction
Moving direction
From down left to up right
Descent Angle
7°
Moving
Facing azimuth
158°
First azimuth
140°
First elevation
7°
Last azimuth
225°
Last elevation
7°
Brightness and color
Stellar Magnitude
-11
Color
Light Green, Turquoise Nucleus, White Glow surround, and white tail
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
No
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
No
Remarks
-
Fragmentation
Observation
Yes
Remarks
As the fireball burned out, I detected a hint of fragmentation or disintegration.
