Impressively detailed and very informative post. I would be curious to know how many more passages the sungrazing fragments will survive as I assume they lose large quantities of mass with each passage, right ? One would expect them to evaporate more or less completely after a number of sungrazing passages
What we don't know is how many large fragments there are still out there, that is the big question. There is no question fragmentation started earlier than 1106, since there are objects that can't be connected back to that year. So I'd say there are more 1882/1965 comet's in the pipeline. What seems to happen is once the fragment gets down below 0.3-0.5km it is destroyed by the sun.