Connection angle for gear system

Hi, I have two gears and I want the upper one to rotate around the other one
in a circular movement around the pitch diameter. how can I do it?
in the picture you can see the x,y location of the upper one and degrees.

Gears can be rotated based on the ratio of their circumference, regardless of teeth.

Since you didn’t post a file, that’s all I have.

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Just to clarify: that’s the circumferences at their pitch circle diameters (and as the circumference has a linear relationship to diameter, simply the ratio of the pcd’s).