Home›Asteroids›218137 2002 RB21218137 2002 RB21Main-belt minor planetDesignation(218137) 2002 RB21ClassMain-beltSemi-major axis2.3069024 AUEccentricity0.2388069Inclination2.91217°Absolute magnitude (H)17.73Perihelion1.756 AUAphelion2.858 AU