258998

258998 is a minor planet in the outer region of the asteroid belt, orbiting the Sun between Mars and Jupiter. It was discovered on October 6, 2002, by astronomers at the Lowell Observatory Near-Earth-Object Search (LONEOS) program. The asteroid is classified as a main-belt asteroid, with a semi-major axis of approximately 3.1 astronomical units (AU), indicating its average distance from the Sun. Its orbital period is roughly 5.5 Earth years.

The size of 258998 is estimated to be around 4.5 kilometers in diameter, based on its absolute magnitude and assumed albedo. Its rotation period is approximately 12.5 hours, which is relatively slow for a main-belt asteroid. The asteroid's spectral type is classified as X, which suggests a primitive composition, possibly including carbonaceous materials.

258998 does not have any known moons or companions. Its orbit is relatively stable, with an eccentricity of about 0.15 and an inclination of around 15 degrees relative to the ecliptic plane. The asteroid's orbit does not intersect with Earth's, making it a non-threatening near-Earth object.

The designation "258998" refers to its sequential number in the Minor Planet Center's catalog of asteroids. As of now, it has not been named, and the discovery team has not proposed a name for this asteroid.