WASHINGTON: The NASA Scientists have discovered two small worlds outside the orbit of Neptune. It is the deepest survey ever conducted to search out distant solar system objects beyond the Neptune.
Beyond the Kuiper Belt, the new objects are located. Kuiper Belt is a region of small icy objects just beyond Neptune, of which Pluto is a member.
Firstly the Pluto was a planet but later the scientists struck of the name of Pluto from the list of Planet.
They have the third and fourth most-distant perihelia, which is when an object has its closest approach distance to the Sun, of any known solar system objects.
The orbital motions of these objects are in buzzing with the orbit of Neptune, which was somewhat unexpected.
Their orbital paths indicate that these worlds either have interacted with Neptune in the past or these worlds are continuing to do so – despite their great distances from the ice giant planet.
This latest discovery is based on observations made with the help of Subaru Telescope in Hawai’i and Cerro Tololo Inter-American Observatory (CTIO) telescope in Chile.
Several years ago, the team members started their survey using the Supreme-Cam image at the Subaru Telescope.
The main goal is to find extreme Trans-Neptunian objects. They already have successfully found several.
Now they are able to cover more of the sky than in the past in their searches for faint distant worlds, with the new Hyper Superem-Cam on Subaru.
The team discovered several more of these objects with high perihelion but moderately eccentric orbits. The semi-major axes of these objects are in the range of about 60 to 100 Astronomical Units.
One of the new objects goes around the Sun once every time when Neptune goes around the Sun four times. The other new objects go around the Sun once every time when Neptune goes around the Sun three times.