[RayChuang88]

I wonder are the scientists using the same analysis developed hundreds of years ago that allowed us to find Uranus and Neptune (which are generally not visible to the naked eye even on a very clear night out in rural areas) originally? Those methods were used to find Pluto in 1930 and in recent years find a number of trans-Neptunian objects. Don't be surprised if some of the world's biggest telescopes and the Hubble Space Telescope are used in this search.

[Red Badger]

They should be able to plot an orbit for these objects.............