Dwarf planet 'The Goblin' discovery redefining solar system

Planet X Search for Planet Nine Turns Up Dwarf Planet

"This new object has the largest orbit of all the extremely distant objects that stay well beyond Pluto".

2015 TG387 (the object was nicknamed "The Goblin" because of the TG designation and the October 2015 discovery date) is about 80 astronomical units away from the Sun, almost 2.5 times further than Pluto is from the Sun.

The new celestial body was named "2015 TG387" or "Goblin" and is about 80 astronomical units from the Sun (an astronomical unit corresponds to Earth-Sun).

When The Goblin was spotted it was extremely far off from the Sun, at well over twice the distance from the star as Pluto, and its orbit is stretched in an oblong shape that takes it up to 2,300 times as far from the Sun as Earth is. Though most orbit too far from the giant planets like Jupiter and Neptune to be influenced by their gravity, most distant objects seem to be moving in accordance with some powerful gravitational force in the outer solar system.

The newly discovered icy world, estimated to be just 300km across, is in an extremely elongated orbit. Called either "Planet X" or "Planet Nine", this still-hypothetical world could remain undiscovered in much the same way The Goblin did.

This is the third dwarf planet recently found to be orbiting on the frigid fringes of our solar system.

It joins other objects Sheppard and his team have found on the edge of the solar system since 2012. "We are only seeing the tip of the ice berg", Sheppard said in an email.

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It follows research by mathematicians at Caltech who found the existence of a massive ninth planet was the only explanation for the sculpting of the orbits of these other, smaller objects. The researchers, including Sheppard, Northern Arizona University's Chad Trujilllo and the University of Hawaii's David Tholen, have also submitted a paper to the Astronomical Journal detailing their findings.

Telescopes in Chile, Hawaii and Arizona were used to discover and confirm the existence of the distant object.

The orbits of the new 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. The researchers nicknamed the object "The Goblin", because of the discovery date and the "TG" in the provisional designation. Data about the discovery is published on the website of the Minor Planet Center. These orbits keep them from ever approaching the proposed planet too closely, similar to how Pluto never gets too close to Neptune even though their orbits cross.

Nicknamed "Planet Nine", the idea first emerged in 2014 when Dr Scott Sheppard and Professor Chad Trujillo sought to explain a odd cluster of six small objects in the Kuiper Belt, a field of icy and rocky objects beyond Neptune.

We will remind, scientists have confirmed that Mars life is possible.

2015 TG387 is likely on the small end of being a dwarf planet since it has a diameter near 300 kilometers. The planet, if it exists, would be bigger than the Goblin or Pluto. "These simulations do not prove that there is another massive planet in our Solar System, but they are further evidence that something big could be out there". "These things have been twisted out of the solar system plane with help from Planet Nine and then scattered inward by Neptune". An orbit of that size means the new dwarf planet takes around 40,000 years to complete one single lap around the sun. But that's all they can really say about The Goblin's physical characteristics.

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