Precession of the S2 Star

I recalculated the precession using the Wikipedia data on S2 in SI units:

Mass of the centre of the galaxy = 8.572 ten power 36 kilograms
Semi major axis = 1.451 ten power 14 metres
eccentricity = 0.88466

These give an EGR precession of 3.8037 radians per S2 orbit of 16.0518 earth years, which is 0.218 degrees per S2 orbit. These data are very similar to those used in UFT375, which gave a precession of 0.203 degrees per orbit. I then used Google keywords “precession of the S2 star” to find one of the many papers I used for UFT375: D. Borka et al. “Constraints on R sup n Gravity from Precession of Orbits of S2 Like Stars”. This paper reports a RETROGRADE precession of – 1 degree per S2 orbit. So EGR is out by a factor of about five and in the wrong direction. The authors come from the Vinca Institute, the University of Belgrade, Astronomical Observatory Belgrade, The Institute of Theoretical and Experimental Physics in Moscow, and the renowned Bogoliubov Laboratory in Dubna. They discard EGR in favour of R sup n theory and computer simulation. I worked with authors from the Bogoliubov Laboratory in the preparation of the award winning “Modern Nonlinear Optics”. So m theory can be applied to this problem in several ways. I agree with Horst that the AIAS Fellows could carry out google searches to see if they can find any experimental data on the S2 precession. Borka et al. report that the S2 orbit is non Keplerian. So EGR is completely refuted, as in the velocity curve of a whirlpool galaxy. There are nearly a hundred refutations of EGR in the UFT papers. There does not appear to be any objection to the paper by Borka et al. In fact this discards EGR completely. So the S2 star does not agree with EGR at all.

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