The team had to wait a long time to ascertain the Goblinplanet's orbit as it moves so slowly. "Or, you never know, if we find more of these, maybe they'll stop pointing toward the planet". A paper with the full details of the discovery has also been submitted to The Astronomical Journal.
The Goblin - officially named 2015 TG387, which isn't quite as catchy - was discovered roughly 80 astronomical units from the sun.
At its closest, the Goblin is 65 times farther from the sun than Earth, or 65 AU.
The most elegant answer (and one supported by The Goblin's orbit) is that there's a pretty sizable planet orbiting somewhere out there, influencing the orbit of The Goblin and millions of other distant space objects, like Sedna. Its orbit has a larger semi-major axis than both 2012 VP11 and Sedna, so it travels much farther from the Sun, out to 2300 AU.
Sheppard toldLaboratory Equipment by email that the evidence so far shows that Planet X may be closer to "aphelion", its farthest orbital point from the sun, which may therefore explain why it remains to elusive.
According to its discoverers, 2015 TG387 has an elongated orbit that never comes close to the Sun. "They can be used as probes to understand what is happening at the edge of our Solar System".
"This new object has the largest orbit of all the extremely distant objects that stay well beyond Pluto", Sheppard said.
Astronomers have just announced, on Tuesday 2 October, have discovered a new dwarf planet in the course of their research to try to find the hypothetical planet X or Nine.
The University of Hawaii's David Tholen said, "We think there could be thousands of small bodies like 2015 TG387 out on the solar system's fringes, but their distance makes finding them very hard". What's special about it is that its 40,000-year orbit takes it way, way, way farther-in fact, this is about as close as it's ever going to get to us. Its large orbit and slow movement allowed Sheppard and his team to study it for several years so they could properly understand it.
The dwarf planet was spotted with a Japanese Subaru eight-metre telescope which is located on the dormant Mauna Kea volcano in Hawaii.
With recent searches of what lies beyond Pluto, astronomers have now detected a small planet some 200 miles in diameter which lies at the incredible distance of some 7.9 billion miles from the Sun.
The Goblin is the third minor planet discovered deep in the solar system.
In 2016, Michael Brown and Konstantin Batygin of the California Institute of Technology, originally predicted about an unseen planet, bigger than Earth yet smaller than Neptune.
So if the Goblin is unaffected by the gas giant planets in our solar system, what contributes to its unusual orbit?
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