There's a few more than 50 on this list... A small, small subset of examples (Supernova ID, host galaxy, date discovered, right ascension (HH:MM), declination (DD:MM)
2012ig UGC 11706 2012 12 21 21 14.4 +15 15
2012ib UGC 9684 2012 12 20 15 03.9 +42 07
2012hy NGC 4903 2012 11 11 13 01.4 -30 56
2012hw MCG +08-18-23 2012 12 11 09 41.6 +48 40
2012hv NGC 4681 2012 12 16 12 47.5 -43 20
2012ht NGC 3447 2012 12 18 10 53.4 +16 47
2012hs ESO 213-2 2012 12 15 09 49.2 -47 55
2012hp UGC 2893 2012 12 09 03 54.3 +36 31
2012ho MCG -01-57-21 2012 12 06 22 40.3 -02 26
2012hn NGC 2272 2012 04 04 06 42.7 -27 27
2012hj MCG +08-20-89 2012 12 04 11 07.3 +46 23
2012hi UGC 4512 2012 12 02 08 39.7 +60 58
2012hh UGC 2180 2012 11 22 02 42.7 +39 32
2012hf NGC 3469 2012 11 22 10 57.0 -14 18
2012he MCG -06-12-2 2012 11 22 05 00.8 -38 39
2012hd IC 1657 2012 11 20 01 14.1 -32 39
2012hc NGC 986 2012 11 10 02 32.7 -39 18
2012hb ESO 90-15 2012 11 04 09 02.1 -64 54
2012gx MCG -02-2-72 2012 11 18 00 38.0 -13 52
2012gw ESO 316-38 2012 10 06 10 10.2 -38 08

[link to www.cbat.eps.harvard.edu]

Another list, with images:
[link to www.rochesterastronomy.org]

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