✦ LIBER ✦

Collisional Spin Up of Nonspherical Asteroids

✍ Scribed by Masahisa Yanagisawa

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 199 KB
Volume: 159
Category: Article
ISSN: 0019-1035
DOI: 10.1006/icar.2002.6928

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✦ Synopsis

We investigate the spin up of nonspherical asteroids by successive random collisions with other smaller asteroids. The spin-up rates are calculated for ellipsoidal and spherical bodies of the same mass. Then, we derive the relative spin-up efficiency, that is, the ratio of the spin-up rate of the ellipsoidal body to that of the spherical body. We suppose a collisional process in our model different from that adopted in the previous works. The results show that ellipsoidal bodies can spin up more rapidly than spherical bodies.

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