55998

55998 is a minor planet in the outer region of the asteroid belt, orbiting the Sun between Mars and Jupiter. It was discovered on October 13, 1998, by astronomers at the Lowell Observatory Near-Earth-Object Search (LONEOS) in Flagstaff, Arizona. The asteroid is classified as a main-belt asteroid, with a semi-major axis of approximately 3.1 astronomical units (AU), and an orbital period of about 5.6 Earth years.

The size of 55998 is estimated to be around 1.5 kilometers in diameter, based on its absolute magnitude and assumed albedo. Its orbit is relatively stable, with an eccentricity of about 0.15 and an inclination of around 10 degrees to the ecliptic plane. The asteroid's spectral type is not well-determined, 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.

55998 has not been visited by any spacecraft, and its physical properties, such as its shape and rotation period, remain unknown. However, its orbit and spectral characteristics provide valuable information for understanding the dynamics and composition of the asteroid belt. The asteroid's discovery and ongoing study contribute to our knowledge of the solar system's formation and evolution.