The planet is tidally locked to the star, so absent an atmosphere, the side of the planet facing away from the star will be freezing. If there is an atmosphere then the opposite side of the planet may be a bit more mild?
Actually if it’s tidally locked a lot of complications could be involved. If the backside of it managed to be hot it’d probably imply an atmosphere or young planet (guessing) or maybe a recent flip (see link). All just my naive thoughts.
Sure would be something if such planets could have atmospheres. That’d seem to imply a temperature gradient from the hot to cold side and would provide a mechanism for heat transfer.
