From my position looking (due east) it appeared to break up half way over lake Winnebago heading due east as if it had flown over Oshkosh (south - to my right). (This was the "apparent" position of the break up) this should provide at least a vector. Due to the delay of the sonic boom it must have been at fairly high altitude. I was trained as an Physicist and Astronomer in College.
Location
Address
Oshkosh, WI
Latitude
44° 5' 35.06'' N (44.093071°)
Longitude
88° 28' 59.58'' W (-88.483216°)
Elevation
229.05m
Time and Duration
Local Date & Time
2017-02-06 01:26 CST
UT Date & Time
2017-02-06 07:26 UT
Duration
≈3.5s
Direction
Moving direction
From up to down
Descent Angle
180°
Moving
Facing azimuth
90°
First azimuth
177.6°
First elevation
60°
Last azimuth
88.81°
Last elevation
60°
Brightness and color
Stellar Magnitude
-20
Color
Light Green
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
Yes
Remarks
Loud Sonic Boom ~45 sec later
Persistent train
Observation
Unknown
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Yes
Remarks
Saw a flash at the end of the event
Fragmentation
Observation
Yes
Remarks
Just prior to end of event and terminal flash saw yellowish small fragments behind the leading object.
