87491

87491 is a minor planet in the outer region of the asteroid belt, orbiting the Sun between Mars and Jupiter. It was discovered on October 14, 1998, by astronomers at the Lincoln Laboratory ETS in Socorro, New Mexico, as part of the Lincoln Near-Earth Asteroid Research (LINEAR) project. The asteroid is classified as a non-family asteroid, meaning it does not belong to any known asteroid family, and its spectral type is unknown.

87491 has an orbital period of approximately 4.47 years, with an average distance from the Sun of about 2.7 astronomical units (AU). Its orbit has a moderate eccentricity of 0.13 and an inclination of about 10.5 degrees relative to the ecliptic plane. The asteroid's absolute magnitude, a measure of its brightness, is 15.5, indicating a diameter of roughly 2.5 kilometers, assuming an albedo similar to that of carbonaceous asteroids.

The physical characteristics of 87491 are not well-determined due to its small size and distance. However, its non-family classification suggests it may have a unique origin, possibly formed from a different region of the asteroid belt or from a different parent body. Further observations and studies are needed to better understand the asteroid's composition, origin, and evolution.