"....every 100 years"

Last paragraph of a piece titled Kaiser Obama by Elliot Sperber at Counterpunch this weekend

To be sure, as Obama argues his case for bombing Syria it is interesting to reflect upon the fact that at least since the death of Louis XIV, in 1715, there has been a major shake up in European western power every hundred years. In 1815, after the defeat of Napoleon, the alliance largely established at the Congress of Vienna maintained a balance of power that persisted until an industrializing, unified Germany upset it, leading to World War I in 1914, after which a new Order arose. And now, in 2013, over 20 years since the end of the Cold War, one cannot help but wonder whether an overextended, historically unpopular US will precipitate its own demise, joining Napoleon’s Empire, and the Austro Hungarian Empire, and so many others in the clutter of the dustbin of history.

100 years? None of the major outer planets' orbits (or related oppositions etc) is near enough to 100 years to reflect any "shake-up effect" in a 100-year cycle. (Uranus= 84 years, Neptune 165 = years, Pluto 248= years). Out of curiosity I looked up length of Eris's orbit (557 years), then Chiron (about 50 years) which led to Pholus (92 years).

Two orbits of Chiron = 100 years, that's not a good fit though. Alternatively, 1 orbit of Pholus comes nearest to 100 years. I know nothing of Pholus. Let's see.....From HERE at astro.com re Pholus

According to first astrological observations, Pholus gives unusual ability in a particular area, or unexpected results, due to a gift for experiment. Pholus' transits over the main axes of a chart, often mark radical and unexpected change, hinted at by his sudden and unexpected death in the myth.

Coincidence? Maybe. Just a thought.