A week on from Caltech’s announcement, Dr Mike Brown and Dr Konstantin Batygin, the two astrophysicists proposing the existence of their ‘Planet Nine’, sketched out the range of orbits which their object might be moving through, including its all-important approximate perihelion and aphelion positions. Essentially, Brown and Batygin consider the perihelion position of the Planet Nine body to be in a broad region around the zodiacal constellations Scorpius/Sagittarius (R.A. = ~16hrs), whilst the aphelion positionof Planet Nine is likely in the equally broad Orion/Taurus area (R.A. = ~4hrs) (1,2).
Image credit: Caltech
We seem to be getting very close now to a discovery of a massive Planet X in the outer solar system. I heard this report on the evening BBC news, a slot which indicates the seriousness with which this subject is now being taken by the scientific community:
“American astronomers say they have strong evidence that there is a ninth planet in our Solar System orbiting far beyond even the dwarf world Pluto. The team, from the California Institute of Technology (Caltech), has no direct observations to confirm its presence just yet. Rather, the scientists make the claim based on the way other far-flung objects are seen to move. But if correct, the putative planet would have 10 times the mass of Earth.