Planet Nine is a hypothetical planet located well beyond Pluto that has been proposed in an attempt to explain the observed clustering in physical space of the perihelia of six extreme trans-Neptunian objects or ETNOs .
The predicted approximate values of its orbital elements include a semimajor axis of 700 au , an eccentricity of 0.6 , an inclination of 30 \degr , and an argument of perihelion of 150 \degr .
Searching for this putative planet is already under way .
Here , we use a Monte Carlo approach to create a synthetic population of Planet Nine orbits and study its visibility statistically in terms of various parameters and focusing on the aphelion configuration .
Our analysis shows that , if Planet Nine exists and is at aphelion , it might be found projected against one out of four specific areas in the sky .
Each area is linked to a particular value of the longitude of the ascending node and two of them are compatible with an apsidal anti-alignment scenario .
In addition and after studying the current statistics of ETNOs , a cautionary note on the robustness of the perihelia clustering is presented .