Host galaxy of SN1999gn 122153.3 +042730 (2000.0) BD+05.2619 9.5 122151.2 +042821 (2000.0) M+01-32-022 122151.2 +042821 (2000.0) U07420 122151.2 +042821 (2000.0) ZG1219+04 122153.4 +042817 (2000.0) GB6J1221+0428 142mJy 122154.6 +042819 (2000.0) RC3_NGC4303 PGC40001 .SXT4.. BT=10.18 122154.6 +042819 (2000.0) SN1926A G N4303 11W 69N II 14.3 - M.Wolf+ 122154.6 +042819 (2000.0) SN1964F G N4303 28W 1S I 12.0: - L.Rosino 122154.8 +042824 (2000.0) CfA_N4303 v=1585km/s Bmag=10.28 122154.8 +042824 (2000.0) QSO_NGC4303 S2 12. z=0.005 122154.8 +042827 (2000.0) N4303 122155.3 +042824 (2000.0) FSC12193+0445 1.064 1.401 23.640 64.650 122155.3 +042848 (2000.0) 1WGAJ1221.9+0428 0.0381 1.50 1.09 1.35 0.53 obs=1992.359 122155.6 +042837 (2000.0) 1RXPJ122155+0428.6 0.0710 0.25 -0.07 122157.2 +042814 (2000.0) IRAS12194+0444 0.491L 0.609L 23.520 61.690 -1% 122157.2 +042814 (2000.0) SSC12194+0444 0.491L 0.609L 23.520 61.690 122200.4 +042815 (2000.0) SN1961I * N4303 82E 12S IIpec 13.0 - M.Humason Expected supernova maxima SN Ia: 13.3 SN II: 15.3