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We present \textit{ALMA} 1.3 mm and 0.86 mm observations of the nearby (17.34pc) F9V star q1 Eri (HD 10647, HR 506). This system, with age ${\sim}1.4$ Gyr,hosts a ${\sim}2$ au radial velocity planet and a debris disc with the highestfractional luminosity of the closest 300 FGK type stars. The \textit{ALMA}images, with resolution ${\sim}0.5''$, reveal a broad (34{-}134 au) belt ofmillimeter emission inclined by $76.7{\pm}1.0$ degrees with maximum brightnessat $81.6{\pm}0.5$ au. The images reveal an asymmetry, with higher flux near thesouthwest ansa, which is also closer to the star. Scattered light observed withthe Hubble Space Telescope is also asymmetric, being more radially extended tothe northeast. We fit the millimeter emission with parametric models and placeconstraints on the disc morphology, radius, width, dust mass, and scale height.We find the southwest ansa asymmetry is best fitted by an extended clump on theinner edge of the disc, consistent with perturbations from a planet with mass$8 M_{\oplus} {-} 11 M_{\rm Jup}$ at ${\sim}60$ au that may have migratedoutwards, similar to Neptune in our Solar System. If the measured verticalaspect ratio of $h{=}0.04{\pm}0.01$ is due to dynamical interactions in thedisc, then this requires perturbers with sizes ${>}1200$ km. We find tentativeevidence for an 0.86 mm excess within 10 au, $70{\pm}22\, \mu$Jy, that may bedue to an inner planetesimal belt. We find no evidence for CO gas, but set anupper bound on the CO gas mass of $4{\times}10^{-6}$ M$_{\oplus}$($3\,\sigma$), consistent with cometary abundances in the Solar System.

High resolution ALMA and HST images of q$^1$ Eri: an asymmetric debris disc with an eccentric Jupiter