The common origin of family and non-family asteroids: Implications for meteorites and NEAs

Autor:	Stanley F. Dermott, Apostolos A. Christou, Dan Li
Rok vydání:	2018
Předmět:	Physics Meteorite Space and Planetary Science Asteroid Astronomy and Astrophysics Astrophysics
Zdroj:	Proceedings of the International Astronomical Union. 14:281-282
ISSN:	1743-9221 1743-9213
DOI:	10.1017/s1743921318008591
Popis:	The observed size-frequency distributions (SFDs) of the five major asteroid families in the Inner Main Belt (IMB), defined by Nesvorný (2015) using the Hierarchical Clustering Method (Zappala et al. 1990), are distinctly different and deviate significantly from the linear log-log relation described by Dohnanyi (1969). The existence of these differences in the SFDs, and the fact that the precursor bodies of the major families have distinctly different eccentricities and inclinations, provides an explanation for the observations that the mean sizes of both the family and the non-family asteroids are correlated with their mean proper eccentricities and anti-correlated with their mean proper inclinations. We deduce from this, and from the fact that the SFDs of the family and the non-family asteroids are almost identical, that the family and most of the non-family asteroids in the IMB have a common origin (Dermott et al. 2018).
Databáze:	OpenAIRE
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