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4 Vesta
Diameter: 326 miles (525 km)
Discovered in 1807 by German astronomer Heinrich Wilhelm Olbers, 4 Vesta is one of the largest asteroids in the Solar System. Measuring approximately 326 miles (525 km) in diameter, it is the second-most-massive object in the asteroid belt after Ceres. With its high albedo, 4 Vesta is one of the brightest asteroids in the sky. Its surface is heavily cratered and has an ancient appearance.
