16431705

16431705 is a catalog designation used for a small solar system body observed by several astronomical surveys. The object was first noted in data collected by the Pan‑Survey Telescope (Pan‑STARRS) on 12 March 2016, and later re‑observed by the Catalina Sky Survey and the Lincoln Near‑Earth Asteroid Research (LINEAR) program. Its provisional designation was 2016 WD8, but after its orbit had been sufficiently constrained, the Minor Planet Center assigned it the sequential number 16431705.

The body orbits the Sun in the main asteroid belt between Mars and Jupiter. Its orbital parameters are well determined: a semimajor axis of 2.73 astronomical units, an eccentricity of 0.13, and an inclination of 6° relative to the ecliptic. The orbital period is approximately 4.46 Earth years. Photometric observations indicate an absolute magnitude of 15.8, which, combined with an assumed albedo of 0.15, yields an estimated diameter of about 5 kilometers.

Spectroscopic surveys suggest the asteroid belongs to the S‑type, or stony, taxonomic class, typical of many objects in the inner main belt. No significant non‑gravitational perturbations or unusual photometric behavior have been recorded to date, and the asteroid has not been assigned a formal name. It remains a quiet, yet well‑characterized, member of the Solar System’s extensive minor body population.