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M.C.
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What is the largest known orbit of an object around the sun? I searched on yahoo, but nothing.
The largest known orbit in our solar system belongs to the dwarf planet Eris, which has an average orbital distance of 67.67 astronomical units (AU) from the Sun. For comparison, Earth's average orbital distance is 1 AU.
Yes, there are several objects with larger orbits than Eris. The dwarf planet Sedna has an average orbital distance of 483.8 AU, and the recently discovered dwarf planet Farout has an average orbital distance of 393 AU. Both of these objects are located in the distant regions of our solar system known as the Oort Cloud.
The size of an orbit directly affects the length of a planet's year. The larger the orbit, the longer it takes for a planet to complete one revolution around the Sun. For example, Eris takes 557 Earth years to complete one orbit, while Earth only takes 365.24 days.
Yes, exoplanets (planets orbiting other stars) can have larger orbits than those in our solar system. In fact, the exoplanet HD 106906 b has an incredibly large orbit, estimated to be about 650 AU from its host star. This is believed to be the largest known orbit of any planet around a single star.
Scientists measure the size of an orbit by calculating the semi-major axis, which is the average distance from the orbiting body to the center of the body it is orbiting. This can be determined through observations and mathematical calculations, using data such as the orbital period and the gravitational pull of the central body.