Wrong? 

I removed this from the article:

"This is not only informal, it is wrong.  Wrong because Newton, by employing three orbital points (positions) for any planet  obtained from John Flamsteed See David H. and Stephen P. H. Clark: Newton's Tyranny, The Suppressed Scientific Discoveries of Stephen Gray and John Flamsteed, W. H. Freeman and Co., 2001.   could produce an equation describing the motion of its orbit.  This was true all except for the two outermost planets (known then), whose orbits even today have to be constantly updated."

I don't see how this makes the statement that preceded it wrong.