Параметры Челябинского и Тунгусского метеороидов и переоценка степени кометно-метеоритной угрозы

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Ю.И. Лобановский
30 Инженерный журнал: наука и инновации # 6·2016
Parameters of Chelyabinsk and Tunguska meteorites
and reassessment of the comet and meteorite threat degree
© Yu. I. Lobanovsky
Irkut Corporation Joint-Stock Company, a UAC member, Moscow, 125315, Russia
The purpose of the article is to describe the application of a mathematical model relating
the parameters of celestial bodies’ motion with their mass and energeticfeatures and
characteristics of the explosions caused by the destruction of these bodies in the atmos-
phere. The model was used to calculate the meteoroid parameters that caused Chelya-
binsk and Tunguska incidents. We assumed the closeness of their orbits, as the time in-
terval between these events is consistent with the orbital period of Chelyabinsk meteor-
oid. The calculations showed that the diameter of Chelyabinsk meteoroid was 180…185
m, the weight was close to 1.8 Mt; the explosion energy was about 57 Mt of TNT. The
diameter of Tunguska meteoroid was close to 105 meters, the weight was 0.35 Mt, and
the explosion energy was about 14.5 Mt. The average density of the meteoroids was simi-
lar - about 570 kg / m3, which indicates a common origin of these heavenly bodies.
Keywords: Chelyabinsk meteorite, Tunguska meteorite, comet, trajectory, explosion, en-
ergy, the shock wave.
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