(5587) 1990 SB 6 marzo, 2019 aaznar APT- Asteroid Photometric Survey Database, Asteroid Photometric Survey, Near-Earth Asteroids Lightcurves Number: 5587 Designation: 1990 SB Name: Heracles First Date: 2016/09/30 Points: 135 P1: 5.0524 h P1 error: 0.0007 h Max. Ampl.: 0.72 mag