Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Comet Elst Pizarro is a body that displays characteristics of both asteroids and comets, and is the prototype of main-belt comets. Its orbit keeps it within the asteroid main belt, yet it displayed a dust tail like a comet while near perihelion in 1996, 2001, and 2007. Elst Pizarro was reported in 1979 as minor planet 1979 OW7, with its image on a photographic plate being completely stellar in appearance. The orbit remains entirely within the orbits of Mars and Jupiter, with eccentricity 0.165, typical of a minor planet in the asteroid belt.
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