MPEC 2012-F106: DAILY ORBIT UPDATE (2012 MAR. 30 UT)
MPEC 2012-F93 : DAILY ORBIT UPDATE (2012 MAR. 27 UT)
MPEC 2011-X26 : DAILY ORBIT UPDATE (2011 DEC. 6 UT)
MPEC 2011-V31 : OBSERVATIONS AND ORBITS OF COMETS