I have set the standard "World Imagery" as a basemap in ArcMap. Now I want to search for places from which I have the coordinates through Google Maps. Let's say I would like to display 51°38'27.1"N 6°33'53.9"E (51.639771, 6.566256) in ArcMap on my "World Imagery" basemap. I have been using the XY-Tool in ArcGIS and also tried to create a new point-shape class. However, whatever I do, it doesn't work. I checked the coordinate systems (GCS_WGS_1984), but it doesn't work.

How can I do this?