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Robert,

For the next ten years to come it's much worse. The distance will have
increased by some 1.4 km in July 2016. (Then it should shrink for a
while. We currently happen to be at a peak of positive nutation.) Even
so, that still amounts to no more than half the size of Austria in those
ten years.

Herbert


Gent van R.H. wrote:

>As the obliquity of the
>ecliptic is currently slowly diminishing, the arctic and tropical circles
>are moving away from each other at circa 30 metres per year, so greater
>accuracy would be meaningless.
>
>I read some where that because of this the polar and tropical regions are
>diminishing in size at a rate of 470 and 1080 sq km per year.
>
>In consequence, the temperate region grows at a rate of 1550 sq km per year.
>Now, who knows a country, state, island or lake of roughly the same size?
>
>

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