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Missing link in planet evolution found



Artist's impression of the newly discovered object. Credit: Ko Arimatsu
    

For the first time ever, astronomers have detected a 1

.3 km radius body at the edge of the solar system. Mileage-sized bodies have more than 70 years. These objects acted as an important step in the planet formation process between small initial amalgamations of dust and ice and the planets we see today.
                                

The Edgeworth-Kuiper Belt is a collection of small celestial bodies located beyond Neptune's orbit. The most famous Edgeworth-Kuiper Belt Object is Pluto. Edgeworth-Kuiper Belt Objects are thought to be remnants left over from the formation of the solar system. While small bodies like asteroids in the inner solar system have been altered by solar radiation, collisions, and the gravity of the planets over time; Objects in the cold, dark, lonely Edgeworth-Kuiper Belt Preserve the pristine conditions of the early solar system.

Edgeworth-Kuiper Belt objects with radii from 1 kilometer world-leading telescopes, like the Subaru Telescope, to observe directly. A research team led by Ko Arimatsu at the National Astronomical Observatory of Japan uses a technique known as occultation: monitoring a large number of stars and observing the shadow of an object in front of one of them. The Organized Autotelescopes for Serendipitous Event Survey (OASES) located at Miyako Island, Miyakojima-shi, Okinawa Prefecture, Japan, has placed 2 small 28 cm telescopes on the roof of the Miyako open-air school, and has approximately 2000 stars for a total of 60 hours.

Edgeworth-Kuiper Belt Object.

Analyze the data. Edgeworth-Kuiper Belt Objects are more numerous than previously thought.

Arimatsu explains, "This is a real victory for little projects." Our team had less than 0.3 percent of the budget of large International Projects We still do not have enough money to build a second dome to protect our second telescope Yet we still manage to make a discovery that is impossible for the big projects Edgeworth-Kuiper Belt in more detail. "

Nature Astronomy ."

The study is published in Nature Astronomy .
                                                                


Explore further:
                                        Astronomers sample origin of Planet 9
                                    

More information:
                                        A kilometer-sized Kuiper belt object discovered by stellar occultation using amateur telescopes, Nature Astronomy (2019). DOI: 10.1038 / s41550-018-0685-8, https://www.nature.com/articles/s41550-018-0685-8
                                        

Journal reference:
                                                                                                            Nature Astronomy
                                                        
                                                        
                                                                                                    

Provided by:
                                                                                                            National Institutes of Natural Sciences
                                                                                                                                                        


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