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FAPESP: Four Extremely Young Asteroid Families Identified
Publicado em 25 de setembro de 2018
Four families of extremely young asteroids have been identified ... The four families in question, all of which are less than 7 million years old, orbit between Mars and Jupiter as part of a grouping known as the Main Asteroid Belt. The key dating parameters used were the longitudes of the pericenter and ascending node. For a planet, comet or asteroid moving around the Sun in an elliptical orbit, the pericenter is the point at which it comes closest to the Sun. The ascending node is the [...]