MPEC 2021-M75 : COMET C/2021 L3 (Borisov) (*)
MPEC 2019-T99 : COMET C/2018 DO4 (Lemmon)
MPEC 2011-P24 : COMET P/2010 JC81 (WISE)
MPEC 2005-C52 : 2001 FF90