V-type Near-Earth asteroids: dynamics, close encounters and impacts with terrestrial planets
arXiv:1610.04786 · doi:10.1002/asna.201613273
Abstract
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.
The article has been accepted by "Astronomical Notes / Astronomische Nachrichten" 2017
References in corpus (5)
- Near Earth Asteroids with measurable Yarkovsky effect
- Dynamical evolution of V-type asteroids in the central main belt
- Numerical integration of dynamical systems with Lie series: Relativistic acceleration and non-gravitational forces
- On the oldest asteroid families in the main belt
- Dynamical evolution of V-type photometric candidates in the outer Main-belt