Asteroid 12345 Rabinowitz is a small celestial body located in the asteroid belt between Mars and Jupiter. It was discovered on October 12, 1990, by astronomers at the Palomar Observatory in California. This asteroid is named in honor of the American astronomer David Rabinowitz, who contributed to the study of near-Earth objects. The asteroid has an estimated diameter of about 6.5 kilometers and orbits the Sun every 4.5 years. Its surface is composed mainly of rock and metal, typical of many asteroids in the belt. Asteroid 12345 Rabinowitz is classified as a member of the Main Belt Asteroids, which are remnants from the early solar system.