Home›Asteroids›284471 2007 HP21284471 2007 HP21Main-belt minor planetDesignation(284471) 2007 HP21ClassMain-beltSemi-major axis2.8000017 AUEccentricity0.1380212Inclination4.11227°Absolute magnitude (H)16.18Perihelion2.414 AUAphelion3.186 AU