Scroll down below for pictures l took using the Tamron 18-400mm at 400m [apsc equivalent of 640mm] using the Canon EOS RP on 4.8.2020 around Vancouver, WA
A supermoon is a full moon or a new moon that nearly coincides with perigee—the closest that the Moon comes to the Earth in its elliptic orbit—resulting in a slightly larger-than-usual apparent size of the lunar disk as viewed from Earth. The technical name is a perigee syzygy (of the Earth–Moon–Sun system) or a full (or new) Moon around perigee. The term supermoon is astrological in origin and has no precise astronomical definition. … Source Wikipedia