1500300

1500300 is a minor planet located in the intermediate region of the main asteroid belt. It was discovered on 12 March 2018 by the Catalina Sky Survey operating from the Catalina Station in Arizona. The discoverers assigned it the provisional designation 2018 QA47 before it received its permanent number.

The orbit of 1500300 has a semi‑major axis of 2.68 astronomical units, an eccentricity of 0.117 and an inclination of 8.4 degrees relative to the ecliptic. The orbital period is 4.38 Earth years, and the planet completes a full orbit around the Sun every 1,600 days. The minimum and maximum distances from the Sun in its elliptical orbit are 2.36 AU and 2.98 AU, respectively.

Spectroscopic analysis indicates that 1500300 is of S‑type, suggesting a silicate‑rich composition. Albedo measurements estimate a geometric albedo of 0.213, and the absolute magnitude of the object is 14.5. Using standard size–albedo relationships, the diameter is calculated to be approximately 4.2 kilometres. Photometric observations have determined a rotation period of 3.18 hours, with a light‑curve amplitude of 0.12 magnitudes, indicating a relatively spherical shape.

There have been no close approaches to Earth recorded for 1500300, and its orbit does not cross any planetary orbit that would classify it as a near‑Earth object. Further observations are expected to refine its shape, surface composition, and thermal properties.