Home›Asteroids›503204 2015 HB21503204 2015 HB21Main-belt minor planetDesignation(503204) 2015 HB21ClassMain-beltSemi-major axis2.6489756 AUEccentricity0.1256845Inclination7.74254°Absolute magnitude (H)17.27Perihelion2.316 AUAphelion2.982 AU