22273

22273 is a minor planet in the asteroid belt, orbiting the Sun between Mars and Jupiter. It was discovered on September 12, 1998, by the Lincoln Near-Earth Asteroid Research (LINEAR) project 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 2.6 astronomical units (AU), and an orbital period of about 4.05 years. Its orbit has an eccentricity of 0.14 and an inclination of 13.4 degrees relative to the ecliptic plane.

The size of 22273 is estimated to be around 4 kilometers in diameter, based on its absolute magnitude of 14.5. The asteroid's spectral type is not well-determined, but it is likely to be of the S-type, which is common among main-belt asteroids. S-type asteroids are characterized by their relatively bright silicate surfaces.

22273 does not have any known moons or companions. Its rotation period is estimated to be around 5.4 hours, based on photometric observations. The asteroid's surface is likely to be covered in regolith, a layer of loose, unconsolidated material, which is common on small asteroids.

The asteroid's orbit does not bring it close to Earth, and it is not considered a potentially hazardous object. However, its discovery and characterization contribute to our understanding of the asteroid belt and the formation of the solar system.