Photometry of 628 Christine, 754 Malabar, 815 Coppelia, and 1025 Riema

Results for the follwing asteroids (lightcurve period and amplitude) observed from Santana Observatory during the period April to June 2003 are reported: 628 Christine (16.135 ± 0.01 hours and 0.22 mag.), 754 Malabar (11.740 ± 0.005 hours and 0.45 mag.), 815 Coppelia (4.421 ± 0.005 hours and 0.24 mag.), 1025 Riema (3.580 ± 0.005 hours and 0.14 mag.).