Home›Asteroids›639740 2017 PH31639740 2017 PH31Main-belt minor planetDesignation(639740) 2017 PH31ClassMain-beltSemi-major axis3.0020974 AUEccentricity0.1741079Inclination1.90743°Absolute magnitude (H)17.27Perihelion2.479 AUAphelion3.525 AU