10457

10457 is a minor planet in the asteroid belt, located between the orbits of Mars and Jupiter. It was discovered on October 13, 1990, by astronomers Eleanor Helin and Kenneth Lawrence at the Palomar Observatory in California, United States. The asteroid is classified as a main-belt asteroid, which means it orbits the Sun within the asteroid belt.

The orbital period of 10457 is approximately 4.31 years, and its semi-major axis is about 2.64 astronomical units (AU). The eccentricity of its orbit is 0.11, indicating a relatively circular orbit. The inclination of its orbit to the ecliptic plane is about 11.5 degrees.

10457 has a diameter of approximately 10 kilometers (6.2 miles) and an absolute magnitude of 13.5. Its spectral type is unknown, but it is likely a C-type asteroid, which are carbonaceous and typically found in the outer regions of the asteroid belt.

The asteroid is named after the American astronomer and planetary scientist Michael E. Brown, who is known for his work on the Kuiper belt and the discovery of several trans-Neptunian objects. The naming citation was published by the Minor Planet Center on March 2, 2004 (M.P.C. 51065).