Data from paper

We report on second-epoch imaging of two candidate planet-hosting white dwarfs stars, \wdtwenty\ and \wdtwelve. Both stars showed evidence of resolved, planet-mass candidate companions in observations using the MIRI mid-infrared imager on JWST. WD2105 also showed evidence of an infrared excess consistent with an unresolved 1.4\mj\ companion with an orbital separation of $<$4\au. Our second epoch observations confirm that the source of the excess shares common proper motion with the star, strengthening the interpretation that it is a planet. However, neither of the two resolved sources with projected separations of $>1$\,arcsec in the first epoch of JWST observations show measurable proper motion and are thus likely faint, unresolved background galaxies.