As I understand it, there is no more Comet Ison. There are I nly the pieces formerly known as Comet Ison. If this is not so my post is inoperative. If there are only pieces left, all former predictions of the trajectory are inoperative.
Not true.
The pieces will continue to follow the orbital path.
Nothing has changed except that there are now pieces.
The bits of Shoemaker-Levy 9 didn’t magically change path, they continued to “wagon train” along the same path.
http://www.psc.edu/science/MacLow/CometOrbit.html
Shoemaker-levy 9.
Note that the chunks didn’t follow “magic” orbits but continued on to impact Jupiter.
IF we do see any kind of meteor shower from Ison, it will be the week of January 14 or so give or take two days.
AND the shower will be from Isons descending inbound orbit, NOT the ascending outbound orbit.