SN 2000cx relatively rapidly fading YYYYMMDD(UT) mag observer 20000812.017 140 (M. Reszelski) 20000812.128 142 (J. Ripero) 20000812.251 138 (R. J. Modic) 20000812.292 139C (M. Fleenor) 20000812.294 140: (M. Simonsen) 20000813.319 143CR (D. Dillinger) 20000816.146 143CR (J. M. Llapasset) 20000817.951 145:R (M. Fiaschi) 20000817.951 145:V (M. Fiaschi) 20000817.951 151:B (M. Fiaschi) 20000823.258 148CR (D. Dillinger)