12756

12756 is a numbered minor planet of the asteroid belt orbiting the Sun. It has not yet been given an official name and thus remains known by its provisional designation and number. The asteroid belongs to the inner main-belt population and is classified spectrally as an S-type, indicating a relatively high albedo and a composition rich in silicate minerals.

The object was first observed on 29 April 1997 by the Lincoln Near‑Earth Asteroid Research (LINEAR) survey at the Lincoln Laboratory’s Experimental Test Site in Socorro, New Mexico. Its discovery orbit was computed using multiple observations over a period of weeks, allowing its orbital elements to be accurately determined by the Minor Planet Center. The initial observation arc provided a well‑constrained estimate of its orbit and physical properties.

12756 follows an orbit with a semi‑major axis of about 2.18 astronomical units, a perihelion distance near 1.71 AU, and an aphelion distance of approximately 2.65 AU. Its orbital period is roughly 3.20 years, and it has an eccentricity of 0.215 and an inclination of 4.1° relative to the ecliptic plane. The relatively low inclination places the asteroid comfortably within the main belt’s dynamical family.

Photometric measurements estimate 12756’s absolute magnitude at around 13.4, corresponding to a diameter in the range of 4 to 5 kilometers, depending on its assumed albedo. Light‑curve observations have suggested a rotation period of roughly 7.3 hours, though precision data are limited. Further observations could refine both its rotational state and shape.

At present, no provisional name or formal citation has been assigned to 12756. The Minor Planet Center’s guidelines stipulate that a discoverer may propose a name once sufficient orbital data and a stable orbit are confirmed. Until such a name is submitted and approved, the designation 12756 remains the asteroid’s sole identifier.