Nowe obliczenia sugerują, że orbity sześciu skrajnych obiektów transneptunowych, które posłużyły jako punkt odniesienia do analizy wskazują, że ich orbity nie są tak stabilne jak wcześniej sądzono. Może to przemawiać za hipotezą , że może istnieć więcej planet.
Do symulacji komputerowych wykorzystano transneptunowe obiekty: Sedna, 2012 VP113, 2004, 2007 VN112 TG422 2013 RF98 i 2010 GB174.
"These objects would escape from the Solar System in less than 1.5 billion years, -he adds-, and in the case of 2004 VN112, 2007 TG422 and 2013 RF98 they could abandon it in less than 300 million years; what is more important, their orbits would become really unstable in just 10 million years, a really short amount of time in astronomical terms."
According to this new study, also based on numerical (N-body) simulations, the orbit of the new planet proposed by Batygin and Brown would have to be modified slightly so that the orbits of the six ETNOs analysed would be really stable for a long time.
These results also lead to a new question: Are the ETNOs a transient and unstable population or, on the contrary, are they permanent and stable? The fact that these objects behave in one way or another affects the evolution of their orbits and also the numerical modelling.
http://phys.org/news/2016-06-extreme-trans-neptunian-planet.html