La mayoría de los meteoritos que caen a la Tierra proceden de 5 o 6 primitivos planetas menores.https://buff.ly/2z7bIDT
Most of Earth's meteorites came from five or six ancient planets -- ScienceDaily: A study found at least 85 percent of 200,000 asteroids in the inner asteroid belt -- the main source of Earth's meteorites -- originate from five or six ancient minor planets.