22276

22276 is a minor planet classified as a main-belt asteroid. It was discovered on 17 March 1999 by the Lincoln Near-Earth Asteroid Research (LINEAR) program at the Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico, USA. The asteroid was assigned the provisional designation . Following a series of observations, it received its permanent number 22276 in 2001.

The asteroid orbits the Sun between 2.1 and 2.9 astronomical units (AU) with a semi‑major axis of approximately 2.5 AU. Its orbital period is about 4.1 Earth years, and it maintains an orbital inclination of roughly 10° relative to the ecliptic plane. The eccentricity of the orbit is moderate, at 0.12, resulting in a mildly elongated path.

Physical characteristics of 22276 are inferred from photometric observations. The lightcurve amplitude suggests a moderately elongated shape, and the rotation period is estimated at approximately 7.8 hours. The absolute magnitude of the asteroid is 13.3, implying a diameter of roughly 6–8 kilometers, assuming an albedo between 0.15 and 0.25. Spectral data suggest it belongs to the S-type class, rich in silicate minerals.

22276 has not been associated with any significant close approaches to Earth or notable events, and it is primarily known for its typical main-belt dynamical and physical properties. The object continues to be monitored by astronomical surveys to refine its orbital parameters and assist in population studies of minor planets.