A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Dave Walden
Date: 2017 Dec 17, 15:08 -0800
as wiki explains, the apparent postion, which we use, includes this effect:
Solar System objects
The apparent position of a planet or other object in the Solar System is also affected by Light-time correction, which is caused by the finite time it takes light from a moving body to reach the observer. Simply put, the observer sees the object in the position where it was when the light left it.