57997

57997 is a minor planet in the outer region of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 24 September 2002, by astronomers at the Lowell Observatory Near-Earth-Object Search (LONEOS) at Anderson Mesa Station. The asteroid is classified as a non-family asteroid in the background population, meaning it does not belong to any known asteroid family. It has a relatively high orbital eccentricity and a semi-major axis of about 3.1 astronomical units (AU), placing it in the outer main belt.

The orbital period of 57997 is approximately 5.5 Earth years. Its orbit is inclined at an angle of about 15 degrees to the ecliptic plane. The asteroid's rotation period is not well-determined, but it is estimated to be around 12 hours. The spectral type of 57997 is not definitively known, but it is likely to be of the C-type, which is characteristic of carbonaceous asteroids.

57997 has not been observed to have any moons or companions. Its physical characteristics, such as shape and surface composition, remain largely unknown due to the limited data available. The asteroid's orbit does not bring it close to Earth, and it is not considered a potentially hazardous object.