(20446) 1999 JB80 21 noviembre, 2017 aaznar Asteroid Photometric Survey, Mars-Crossing Asteroids Lightcurves Number: 20446 Designation: 1999 JB80 Name: – First Date: 2017/11/19 Points: 100 P1: 3.209 P1 error: 0.004 Max. Ampl.: 0.29