320003

320003 is a numbered minor planet located in the inner region of the asteroid belt. It is classified as a stony S-type asteroid based on its spectral reflectance, although detailed spectroscopic data are limited. The asteroid carries the provisional designation 2006 XH29, reflecting its discovery in 2006, and has not yet been given a formal name.

The body was first observed on 14 September 2006 by the Lincoln Near‑Earth Asteroid Research (LINEAR) survey at the Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico. LINEAR's automated survey system identified the object as a new member of the main‑belt population. Follow‑up observations allowed for the calculation of its orbit and confirmed its status as a minor planet, leading to its official numbering by the Minor Planet Center on 12 March 2018.

Orbitally, 320003 travels between 1.88 and 2.25 astronomical units from the Sun, with a semimajor axis of 2.06 AU, an eccentricity of 0.09, and an inclination of 6.7 degrees relative to the ecliptic. Its orbital period is approximately 3.54 years (1,290 days). The computed absolute magnitude is 18.4, corresponding to an estimated diameter of roughly 1.5 kilometers, assuming a typical albedo of 0.20 for S-type asteroids.

No additional data on rotation period, pole orientation, or detailed physical characteristics are currently available. As of the latest catalog entries, the asteroid remains unnamed and is cataloged solely by its numerical designation.