Home›Asteroids›257734 1999 YF21257734 1999 YF21Main-belt minor planetDesignation(257734) 1999 YF21ClassMain-beltSemi-major axis2.4136781 AUEccentricity0.1713834Inclination2.45166°Absolute magnitude (H)17.33Perihelion2.000 AUAphelion2.827 AU