I am not an astronomer, in fact, I have never had much of an interest in it, but what I read of the link to Olof Johnsson is amazing.
IMHO, this type of article is one that has been specifically assigned by the GB. Either there is rumor going around the organization about the flaws in the 607 doctrine, especially with 2014 getting so close, and the GB needs to shore up support for their doctrine, or, they decided to reinvestigate it, much like Fred Franz assigned Ray Franz to do in '78 or so, and whoever investigated came up with this absurd explanation so they wouldn't rock the boat by telling the GB the truth.
Could others have ruled
between the reigns of these kings? If so, additional
years would have to be added to
the Neo-Babylonian period. Therefore, neither
the Babylonian chronicles nor the business
tablets provide a basis to establish with
certainty that Jerusalem was destroyed in
587 B.C.E.
This reminds me of the explanation Fred Franz gave for what the Bible means when it says "Door to door." He said, "they could go in the front door and leave out the back door." I'm not sure the exact quote, and I don't have time to look it up, but that was the gist of it.
Just my $.02