Assuming no advancement in our technology, it will be so difficult to detect an apparent shift in its position between January and July.
In astronomy, The term apparent shift is called Stellar Parallax.
Stellar parallax is the apparent shift in the location of a nearby star as seen in comparison to other objects. This theory is mostly noticed in relation to other objects in its background, as well as the orbital locations of the planet Earth.
According to the theory, the Earth will arrive at its exact opposite location in six months. This provides a starting point for determining the star's approximate distance from Earth using Trigonometry approaches. According to theory, detecting stellar parallax is extremely difficult, including for stars a few light-years distant from Earth. This observation is possible by using advanced technologies and tools such as telescopes.
Making accurate assumptions gets increasingly difficult as the distance from the Earth increases. Recall that as the object's distance from the Earth increases, so does the parallax factor. Exact distances can only be measured if the object is less than 300 light-years distant from Earth.
As a result, observing the apparent shift for stars farther away from our Earth would be extremely impossible without the use of modern technologies.
Learn more about Star Regulus here:
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