MPEC 2015-G28 : COMET C/2015 G2 (MASTER)
MPEC 2014-T63 : 2014 TK34 (*)
MPEC 2014-S115: COMET P/2014 S4 (GIBBS)
MPEC 2014-S81 : COMET P/2014 R5 (LEMMON-PANSTARRS)