In The Search for Planet X, when declaring that Planet X has been officially found, must its left and right neighbors be guessed precisely?

In the hardcore astronomical logic deduction masterpiece "The Search for Planet X": I have locked down the sector number where Planet X is located at the observatory. When making the final declaration to locate Planet X, besides announcing which sector Planet X is in, do I also need to announce what celestial bodies are hidden in the sectors to its left and right?