They've responded by saying that they're randomising locations - OP finds it's always 1km from his location. If it's a fixed distance (radius) then only the an

They've responded by saying that they're randomising locations - OP finds it's always 1km from his location. If it's a fixed distance (radius) then only the angle can be randomised. This means that graphing even just a few points from a consistent location will lead to a circle centred precisely on the user's address. Even if it's only partial, an arc can be extrapolated to a circle without any loss.