as shown in Fig. \[fig6\] with a magnitude too large to be explained only in terms of mismodelled or ignored zonal coefficients.

Another source of mismodelling can arise from the estimation of Jupiter’s axis orientation in space. If we consider that the axis at J2000 instead of the correction for the date of Juno’s flybys, by taking $T=0$ in Eq. (\[EqaxisJ\]), a perturbation in the force term of the potential model of magnitude $\vert \delta {\bf F} \vert \simeq 5.63 \times 10^{-5}$ mm$/$s$^2$ is found.

One should also consider that the spacecraft is an extended object which rotates at three revolutions per minute. This would generate a small magnetic moment for Juno which could contribute to the equations of motion through interaction with the magnetic field of Jupiter but this has been estimated as negligible in other cases [@LPDSolarSystem]. It has also been shown that helicity of radio waves can exhibit a coupling with the rotation of the spacecraft and the rotation of the planet [@Helicity] but this only influences the two-way Doppler data and it can not explain the arising of the anomaly also in the ranging data [@LPDSolarSystem].

A remaining possibility is the connection among the discrepancies found 