Home›Asteroids›788917 2017 GC21788917 2017 GC21Main-belt minor planetDesignation(788917) 2017 GC21ClassMain-beltSemi-major axis2.5866863 AUEccentricity0.1704568Inclination6.74738°Absolute magnitude (H)18.01Perihelion2.146 AUAphelion3.028 AU