Analysis of June 2, 2016 bolide event over ArizonaOPEN ACCESS 

Csaba Palotai, Ramanakumar Sankar, Dwayne L. Free, J. Andreas Howell, Elena Botella, Daniel Batcheldor

accepted for publication in MNRAS, version 1 (v1): 15 Jan 2018, last revised (v2) 21 May 2019


Update (24 May 2019): LINK

On June 2, 2016 at 10h56m UTC, a−20.4±0.2 magnitude superbolide was observed over Arizona. Fragments were located a few days later and the meteorites were given the name Dishchii’bikoh. We present analysis of this event based on 3 cameras and a multi-spectral sensor observations by the SkySentinel continuous fireball-monitoring camera network, supplemented by a dash cam footage and a fragmentation model. The bolide began its luminous flight at an altitude of 100.2±0.4km at coordinates φ=34.555±0.002°N planetographic latitude and λ=110.459±0.002°W longitude, andit had a pre-atmospheric velocity of 17.4±0.3km/s. The calculated orbital parameters indicate that the meteoroid did not belong to any presently known asteroid family. From our calculations, the impacting object had an initial mass of 14.8±1.7 metric tonnes with an estimated initial diameter of 2.03±0.12m.