
© Roberto Molar Candanosa and Scott Sheppard, courtesy of Carnegie Institution for ScienceThe orbits of the newfound extreme dwarf planet 2015 TG387 and its fellow Inner Oort Cloud objects 2012 VP113 and Sedna, as compared with the rest of the solar system.
Scientists have discovered yet another marker on the trail toward the putative
Planet Nine.
That clue is 2015 TG387,
a newfound object in the far outer solar system, way beyond Pluto. The orbit of 2015 TG387 shares peculiarities with those of
other extremely far-flung bodies, which
appear to have been shaped by the gravity of a very large object in that distant, frigid realm - the hypothesized Planet Nine, also known as Planet X.
"These distant objects are like breadcrumbs leading us to Planet X," study leader Scott Sheppard, of the Carnegie Institution for Science in Washington, D.C., said in a statement.
"The more of them we can find, the better we can understand the outer solar system and the possible planet that we think is shaping their orbits - a discovery that would redefine our knowledge of the solar system's evolution," he added.
And 2015 TG387 is special among these bread crumbs, because it was
found during a relatively uniform survey of the northern and southern skies rather than a targeted hunt for clustered objects in certain parts of the sky, Sheppard said. Targeted hunts
can produce biased results - for example, the appearance of clustering where none may actually exist, he explained.
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