(12538) 1998 OH 30 julio, 201930 julio, 2019 aaznar Asteroid Photometric Survey, Near-Earth Asteroids Lightcurves Number: 12538 Designation: 1998 OH Name: – First Date: 2019/07/10 Points: 81 P1: 2.58 P1 error: 0.01 Max. Ampl.: 0.15 Lightcurve from TAR2 telescope (IAC-Solar System Group) and APT-Observatories Group.