20473

20473 is a minor planet in the outer region of the asteroid belt, orbiting the Sun between Mars and Jupiter. It was discovered on October 13, 1999, by the Lincoln Near-Earth Asteroid Research (LINEAR) team at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico. The asteroid is classified as a main-belt asteroid, with a semi-major axis of approximately 3.1 astronomical units (AU). Its orbital period is about 5.5 Earth years, and it has an eccentricity of 0.11, indicating a relatively circular orbit.

The size of 20473 is estimated to be around 5 kilometers in diameter, based on its absolute magnitude and assumed albedo. The asteroid's rotation period is not well-determined, but it is believed to be relatively slow, possibly on the order of several hours. The spectral classification of 20473 is not available, but it is likely to be a C-type asteroid, which are common in the outer asteroid belt and are characterized by their dark, carbonaceous surfaces.

20473 does not have any known moons or companions, and its orbit does not bring it close to any other major bodies in the solar system. It is not considered a potentially hazardous asteroid, as its orbit does not intersect with Earth's orbit. The asteroid's name is not yet assigned, as it has not been officially numbered or named by the International Astronomical Union (IAU).