331471 1984 QY1 21 septiembre, 2017 aaznar Near-Earth Asteroids Lightcurves Number: 331471 Designation: 1984 QY1 Name: – First Date: 2016/05/31 Points: 1140 P1: 45.90 P1 error: 0.03 Max. Ampl.: 0.46 Non-principal-axis rotator.