If they find a brown dwarf, then it's Nibiru.
Nibiru The other aspect of Sumerian mythology covers cosmology.
The Galilean moons of Jupiter are invisible to the naked eye, so at least 8 of Nibiru's satellites are bigger than them.
This is the origin of the appearance of the Winged Disk during Nibiru's perihelion passage.
This corresponds to the next perihelion of Nibiru, giving it a periodicity of 3760 minus 4, equalling 3756 years.