Planet X does exist, and it is the 12th Planet, one and the same. When first sighted via infrared readings and reported by the IRAS team in 1983, the IRAS findings were taken in many ways by the human scientists reading the reports, and thus they cast many interpretations on just what the 12th Planet's infrared reading might imply. Infrared heat can be taken to mean many things, depending on distance, size, and composition of the object being sensed. A very hot object far away can be comparable to a barely warm object near at hand, or a very large object far away can be considered to be a smaller object close at hand, and as the compression caused by the mass of an object is considered to produce infrared rays, then a very heavy but cold object could be considered comparable to a lighter but warmer object. The scientists reading the IRAS findings took the 12th Planet, a.k.a. Planet X, to be larger, colder, and farther away, as the mind does not want to comprehend the alternatives. When first sighted in 1983, it was on the right hand side of Orion, as viewed from your northern hemisphere. It will first move left and up toward the elliptical plane as it nears the Earth's Solar System for its passage, as though to assume a place with the other planets in the Solar System, at this point being slightly to the left of Orion. In 1998 it will veer right, moving toward Taurus and Aries, assuming a retrograde orbit, and will come up through the plane as viewed from above the elliptical plane, in its first passage.
The reason given, officially, for the search for Planet X was the perturbations in the outer planets, known for some centuries and hardly explained by the discovery of Pluto. Just as the planned settlements on Mars are given and official explanation to the populace, which is paying for all of this, the search for Planet X could scarcely be hidden from public view. What the public was not told, of course, was that the press for certainty was due to information we had given MJ12, and that this information appeared to be solid based on decades of careful monitoring of the skies. Following Roswell, as the story tells, we established a contact with the US government, which put this into the hands of MJ12 to avoid information contamination of the normal federal bureaucracy. We were interested in the human leadership of the world informing their public, so early on we made clear what was about to happen, in 2003 [Note: see 2003 Date explanation]. As the story of the Alternatives 1, 2, and 3 tell, the immediate reaction was to save a few skins. When it became clear that they were likely to be on the surface of Earth during the next pole shift, they wanted confirmation. Running away is relatively easy, as one is just suddenly absent. But if one must build a safe complex in front of those one is lying to, this is more difficult. Thus, to secure cooperation among those they would have to enlist, on Earth, they needed confirmation. MJ12, via NASA and JPL, had been monitoring the approach of Planet X, according to our coordinates and predictions. This was proving accurate, so they mustered the IRAS search in the early 1980's which resulted in the find of what they hoped they would not find.
The human mind does not wish to entertain the awful, so most in this group were in denial, though going along with the search as an interesting scientific exercise, not unlike most of the activity NASA et al undertake daily. The discovery of solid proof so stunned most of those involved in the search that their guard was dropped, and thus the reports such as the 1983 Washington Post front page article. Interest in Planet X was roaring along going into the 1983 IRAS search. Had Planet X not been found, interest might still be roaring along, in the media, that is. When the blanket of suppression was dropped on the media and major observatories, who know just where Planet X is at all times these days, it took some time for an explanation for the silence to be concocted. Thus one finds the strange silence, that lasted almost a decade, following the Planet X discovery in 1983. Since JPL and NASA are firmly in hand, doing the bidding of the establishment on so many information issues, they became the designated arm of the explanation. The mystery of why the outer planets appeared perturbed to astronomers for the last 160 years was explained away by adjustments in the size and composition of these outer planets discovered by probes. The public gets the conclusion, but not the details, or they get the details in such a manner that an independent conclusion can't be arrived at. All very safe.