Location of fall
Innisfree (Alberta, Canada)
Coordinates
53°24'53" N, -111°20'14" E
Date of fall
February 5, 1977 19h 17mn 38s LT
February 6, 1977 02h 17mn 38s UT
Fireball duration
4.09 s
Initial velocity
14.54 km/s
Start height of bolide
72 km
Terminal height of bolide
21 km
Fireball terminal velocity
4.70 km/s
Trajectory slope (// horizontal)
67.8 °