V-type Near-Earth asteroids: dynamics, close encounters and impacts with terrestrial planets

Status Report From: e-Print archive
Posted: Tuesday, October 18, 2016


M. A. Galiazzo, E. A. Silber, D. Bancelin
(Submitted on 15 Oct 2016)

Asteroids colliding with planets vary in composition and taxonomical type. Among Near-Earth Asteroids (NEAs) are the V-types, basaltic asteroids that are classified via spectroscopic observations. In this work, we study the probability of
V-type NEAs colliding with Earth, Mars and Venus, as well as the Moon. We perform a correlational analysis of possible craters produced by V-type NEAs. To achieve this, we performed numerical simulations and statistical analysis of close encounters and impacts between V-type NEAs and the terrestrial planets over the next 10 Myr. We find that V-type NEAs can indeed have impacts with all the planets, the Earth in particular, at an average rate of once per 12 Myr.

There are four candidate craters on Earth that were likely caused by V-type NEAs.
Comments: The article has been accepted by "Astronomical Notes / Astronomische Nachrichten" 2017
Subjects: Earth and Planetary Astrophysics (astro-ph.EP)
Cite as: arXiv:1610.04786 [astro-ph.EP] (or arXiv:1610.04786v1 [astro-ph.EP] for this version)
Submission history
From: Mattia Galiazzo
[v1] Sat, 15 Oct 2016 20:59:24 GMT (478kb) 

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