Hum, at 75 AU it's nearly 4 times the distance Sun-Uranus and the star is 40% less luminous or so. My guess is that the impact would be really small. My simulator showed less than 1 Celsius degree in temperature difference.

Do you play Dnd ? There is something called the plane of shadow and the etheral plane : SRDlane of Shadow - D&D Wiki
the moon is in fact located in another plane of existence. Usually, it's not possible to see it but under certain circumstances it is.