MPEC 2020-F58 : COMET C/2017 U7 (PANSTARRS) (*)
MPEC 2018-F152: OBSERVATIONS AND ORBITS OF COMETS
MPEC 2018-E17 : A/2017 U7 (*)
MPEC 2017-Y44 : COMET P/2017 W3 (Gibbs)
MPEC 2017-X06 : COMET C/2017 U5 (PANSTARRS)