Estimates magnitude CCD-C (AUDE) SN1999em 20000209.858 145V LLA SN1999em 20000209.869 138Rc LLA SN1999em 20000212.887 140CR CAZ Observer:Jacques CAZENOVE,Observatory Narbonne (France)LX200 10" at 3.3;camera Hisis22 (Kaff400); software PRISM. Observer: Jean Marie Llapasset: Observatory 635 Perpignan (France;)C11;ech=2"/pixel;ST7E;filters Shott; software PRiSM; Comparison with stars sequence vsnet-chat2389. Jean Marie Llapasset Obs 635 Perpignan (France) http://perso.wanadoo.fr/jm.llapasset/ http://aude.geoman.net/observation/SN/sn.html