Hunt for ninth planet reveals new extremely distant Solar System objects | Carnegie Institution for Science
https://carnegiescience.edu/.../hunt-ninth-planet-reveals-new-extremely-distant-solar-system-objects
In the race to discover a proposed ninth planet in our Solar System, Carnegie’s Scott Sheppard and Chadwick Trujillo of Northern Arizona University
have observed several never-before-seen objects at extreme distances from the Sun in our Solar System. Sheppard and Trujillo have now submitted their
latest discoveries to the International Astronomical Union’s Minor Planet Center for official designations. A paper about the discoveries has also
been accepted to The Astronomical Journal.
The more objects that are found at extreme distances, the better the chance of constraining the location of the ninth planet that Sheppard and Trujillo
first predicted to exist far beyond Pluto (itself no longer classified as a planet) in 2014. The placement and orbits of small, so-called extreme trans-
Neptunian objects, can help narrow down the size and distance from the Sun of the predicted ninth planet, because that planet’s gravity influences
the movements of the smaller objects that are far beyond Neptune. The objects are called trans-Neptunian because their orbits around the Sun
are greater than Neptune’s.