The orbit published in MPEC K11L33 gives a perihelion of April 17, 2013, but since that Circular 2 additional prediscovery images were found on May 30, 2011. When you add astrometry from these images Perihelion is brought forward 2 months.
The result of that works in the northern hemisphere's favour (but at the expense of the Southern hemisphere - but that can be solved by travelling!). Lets hope the comet brightens well and we get a decent naked eye comet
. Anyway the elements I calculate with all 36 available observations are as follows:
C/2011 L4
Perihelion 2013 Feb 12.38 TT; Constraint: e=1
q 0.32
Peri. 332.25
Node 67.08
e 1.0
Incl. 65.09