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From: Tom Roberts on 25 Jun 2010 23:58
Surfer wrote:
> See:
> http://en.wikipedia.org/wiki/Tests_of_general_relativity#Perihelion_precession_of_Mercury
>
> Amount: arcsec/Julian century
> 5603.24 Total predicted
> 5599.7 Observed
> -3.54 Discrepancy
>
> The discrepancy is larger than the observational error

Before one knows whether or not this is significant, one must compare the
discrepancy to the errorbars. The above-referenced article does not do that, and
does not include the errorbars.

So you must look up the errorbars in the literature before you can determine
whether this is important or not.


> In addition GR predicts that even a circular orbit with an
> eccentricity of zero would precess--but such precession would be
> unphysical.

Not "unphysical", merely unmeasurable.


Tom Roberts
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