Not it's not. The main problem is the use of the words "perfect" and "exactly".

Next conjunction I plan to move from my previous position to a location about 100 feet higher, thereby shifting the Earth's center of gravity and ruining the "perfect" pentagram as well as the "exact" alignment.

Actually I won't have to do that, since the Earth's center of gravity is constantly shifting all the time.

Same deal re the geometric center.

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