  I tentatively compile the formal uncertainties in the secular rates of change
of the orbital elements $a,~e,~I,~\Omega$ and $\varpi$ of the planets of the
solar system from the recently released formal errors in $a$ and the
nonsingular elements $h,~k,~p$ and $q$ estimated for the same bodies with the
EPM2017 ephemerides by E.\,V. Pitjeva and N.\,P. Pitjev. The highest accuracies
occur for the inner planets and Saturn in view of the extensive use of
radiotechnical data collected over the last decades. For the inclination $I$,
node $\Omega$ and perihelion $\varpi$ of Mercury and Mars, I obtain accuracies
$\sigma_{\dot I},\,\sigma_{\dot\Omega},\,\sigma_{\dot \varpi}\simeq
1-10\,\mu\textrm{as~cty}^{-1}$, while for Saturn they are $\sigma_{\dot
I},\,\sigma_{\dot\Omega},\,\sigma_{\dot \varpi}\simeq
10\,\mu\textrm{as~cty}^{-1}-1\,\textrm{mas~cty}^{-1}$. As far as the semimajor
axis $a$ is concerned, its rates for the inner planets are accurate to the
$\sigma_{\dot a}\simeq 1-100\,\textrm{mm~cty}^{-1}$ level, while for Saturn I
obtain $\sigma_{\dot a}\simeq 17\,\textrm{m~cty}^{-1}$. In terms of the
parameterized post-Newtonian (PPN) parameters $\beta$ and $\gamma$, a formal
error as little as $8\,\mu\textrm{as~cty}^{-1}$ for the Hermean apsidal rate
corresponds to a $\simeq 2\times 10^{-7}$ bias in the combination $\left(2 +
2\gamma- \beta\right)/3$ parameterizing the Schwarzschild-type periehlion
precession of Mercury. The realistic uncertainties of the planetary precessions
may be up to one order of magnitude larger. I discuss their potential multiple
uses in fundamental physics, astronomy, and planetology.
