A bright fireball was detected at extreme range (hundreds of kilometers) by two NASA meteor cameras located at the Pisgah Astronomical Research Institute (PARI) in North Carolina, and at Hiram College in Ohio. At such distances (286 miles in the case of the PARI camera), trajectory determination is quite difficult.
The fireball was first detected on February 27 at 7:07:58 PM EST at an altitude of 50 miles above the town of Montibello, Virginia, moving SW towards Roanoke with a speed of around 33,500 mph. Our cameras lost track around an altitude of 43 miles as the fireball disappeared below the horizon, though it undoubtedly penetrated lower. Magnitude was approximately -8.5, which is brighter than the crescent Moon. Taking into account the speed, we are dealing with an object roughly 1 foot in diameter and weighing approximately 50 lbs.