Home›Asteroids›18161 Koshiishi18161 KoshiishiMain-belt minor planetOpen encyclopedia entry →Designation(18161) KoshiishiClassMain-beltSemi-major axis2.9982393 AUEccentricity0.0964292Inclination9.56273°Absolute magnitude (H)12.33Perihelion2.709 AUAphelion3.287 AU