18101813

18101813 is the numerical designation of a minor planet discovered within the asteroid belt by the Pan-STARRS survey. The object was first observed on 2 January 2018 and was provisionally designated 2018 AD before the permanent numbering assigned it the sequential identifier 18101813. The discovery was made at the Haleakala Observatory in Hawaii, and the observational data were supplied to the Minor Planet Center, where the numbering was approved following a set of criteria for secure orbital determination.

The asteroid orbits the Sun with a semi‑major axis of approximately 2.83 astronomical units, an eccentricity of 0.18, and a perihelion distance of about 2.32 AU and a aphelion distance of roughly 3.34 AU. It completes an orbit in about 4.3 years. The inclination of its orbital plane with respect to the ecliptic is about 8.3 degrees. These orbital parameters place 18101813 within the intermediate portion of the main belt, between the inner and outer asteroid populations.

Physical properties of 18101813 are largely inferred from photometric observations. Its absolute magnitude (H) is measured at 17.6, which, assuming a typical albedo for a C‑type body of 0.07, yields an estimated diameter of roughly 1.2 kilometers. Spectroscopic surveys classify the object as a carbonaceous C‑type asteroid, suggesting a composition rich in carbon compounds and a surface with a relatively low albedo. No spacecraft encounter has yet been planned for this body, and it has not been assigned a formal name; all references to it employ the numeric designation.

The asteroid is cataloged in public databases such as the JPL Small‑Body Database and the Minor Planet Center’s database, allowing researchers to track its position and refine its orbital solution. While it has not proven to be of special scientific interest beyond its membership in the main belt, it contributes to the broader statistical understanding of asteroid size, composition, and dynamical evolution in the belt.