3933 Portugal

3933 Portugal (1986 EN4) is an outer main-belt asteroid discovered on March 12, 1986 by R. M. West at La Silla. Asteroids (from Greek ἀστήρ 'star' and εἶδος 'like, in form') are a class of Small Solar System Bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones. These terms have historically been applied to any astronomical object orbiting the Sun that did not show the disk of a planet and was not observed to have the characteristics of an active comet, but as small objects in the outer Solar System were discovered, their volatile-based surfaces were found to more closely resemble comets, and so were often distinguished from traditional asteroids.