New Constraints on the Asteroid 298 Baptistina, the Alleged Family Member of the K/T Impactor

Details New Constraints on the Asteroid 298 Baptistina, the Alleged Family Member of the K/T Impactor New Constraints on the Asteroid 298 Baptistina, the Alleged Family Member of the K/T Impactor

2008-11-02

arxiv.org/abs/0811.0171v1

Astronomy and Astrophysics

Astrophysics

Accepted for Publication in the JRASC

Scientific paper

In their study Bottke et al. (2007) suggest that a member of the Baptistina asteroid family was the probable source of the K/T impactor which ended the reign of the Dinosaurs 65 Myr ago. Knowledge of the physical and material properties pertaining to the Baptistina asteroid family are, however, not well constrained. In an effort to begin addressing the situation, data from an international collaboration of observatories were synthesized to determine the rotational period of the family's largest member, asteroid 298 Baptistina (P_r = 16.23+-0.02 hrs). Discussed here are aspects of the terrestrial impact delivery system, implications arising from the new constraints, and prospects for future work.

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