MPEC 2019-W50 : 2I/Borisov
MPEC 2017-X08 : OBSERVATIONS AND ORBITS OF COMETS
MPEC 2017-J52 : OBSERVATIONS AND ORBITS OF COMETS
MPEC 2015-B177: OBSERVATIONS AND ORBITS OF COMETS
MPEC 2014-S34 : OBSERVATIONS AND ORBITS OF COMETS
MPEC 2014-R69 : OBSERVATIONS AND ORBITS OF COMETS
MPEC 2014-L52 : OBSERVATIONS AND ORBITS OF COMETS
MPEC 2014-K54 : OBSERVATIONS AND ORBITS OF COMETS
MPEC 2013-M31 : OBSERVATIONS AND ORBITS OF COMETS