Home›Asteroids›181961 1999 UA31181961 1999 UA31Main-belt minor planetDesignation(181961) 1999 UA31ClassMain-beltSemi-major axis2.2047357 AUEccentricity0.2118749Inclination4.30553°Absolute magnitude (H)17.74Perihelion1.738 AUAphelion2.672 AU