As far as I can see only the Magellan telescope's field of views overlap but the Subaru's and Blanco's mostly don't and seem somehow randomly distributed between or around the ecliptic or assumed Planet Nine orbital path. With such gaps between Subaru's and Blanco's FOVs, can the respective scientists really claim Planet Nine is not in the overall search areas once they have completed their surveys? This image https://commons.wiki...h_in_orion2.png of a simulated possible trajectory proposes that Planet Nine might have angular motions per Earth year of something around 6 arcmin. So, how can a survey be reliable if the fields of view don't overlap?
Btw, any news concerning the state of completeness of the respective teams surveys or other news?