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The method used by senior geodetic engineer Jean-Georges Affholder todetermine what can be termed as the 'centre of gravity' of physical Europe in1989 and 2004 relies on mathematical formulae which, in their only publishedversion, happen to be flawed with typographical errors that do not reflect Mr.Affholder's actual mathematical exactness. This short epistemological papersummarizes the major steps of Affholder's method, provides a corrected versionof the general formulae, and briefly recalls some particulars of the specificdetermination of the centre of gravity of physical Europe.

How IGN (France) computed the so-called 'centre of gravity' of physical Europe in 1989 and 2004