Estimation of the precatastrophic composition of the Tunguska cosmic body

Details Estimation of the precatastrophic composition of the Tunguska cosmic body Estimation of the precatastrophic composition of the Tunguska cosmic body

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982avest..15..167g&link_type=abstract

(Astronomicheskii Vestnik, vol. 15, July-Sept. 1981, p. 167-173.) Solar System Research, vol. 15, no. 3, Jan. 1982, p. 122-127.

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2

Abundance, Cosmochemistry, Meteoritic Composition, Tungusk Meteorite, Anomalies, Dust, Volatility

Scientific paper

A prognostic estimate of the chemical composition of the Tunguska cosmic body (TCB) before its entry into the earth's atmosphere is given in order of magnitude. Many chemical elements in the TCB are shown to differ from their average abundance in the earth's crust, in meteorites, and in the solar system as a whole. The density of the TCB is estimated as 0.1-0.2 g/cu cm, with a core size of 270-340 m. The content of the mineral component is about 0.1% and the sizes of dust inclusions is estimated at less than 1 micron. The method can also be applied to estimate the chemical composition of other cosmic bodies of a cometary nature from their density and observed reference ratios of elements.

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