155145

155145 is a minor planet in the outer region of the asteroid belt, orbiting the Sun at a distance of approximately 3.1 astronomical units. It was discovered on October 13, 2004, by the Lincoln Near-Earth Asteroid Research (LINEAR) project, a collaborative effort between the United States Air Force, NASA, and MIT. The asteroid is classified as a main-belt asteroid, which means it orbits between Mars and Jupiter without being significantly influenced by the gravitational forces of the outer planets.

155145 has an estimated diameter of about 3 kilometers, based on its absolute magnitude and assumed albedo. Its orbital period is approximately 5.5 Earth years, and its orbit is moderately inclined to the ecliptic plane, with an inclination of about 10 degrees. The asteroid's rotation period is not well-determined, but it is believed to be relatively slow, similar to other asteroids in the main belt.

The spectral classification of 155145 is not well-established, but it is likely to be a C-type asteroid, which are common in the outer asteroid belt and are characterized by their dark, carbonaceous surfaces. The asteroid's composition is thought to be similar to that of carbonaceous chondrite meteorites, which are primitive materials that have not been significantly altered since the formation of the Solar System.

155145 is not considered a near-Earth object, and its orbit does not bring it close to Earth. However, its discovery and characterization are important for understanding the composition and dynamics of the asteroid belt, as well as for assessing the potential impact hazard posed by near-Earth asteroids.