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Planet Nine is a hypothetical ninth planet in the outer region of the Solar System. [2] [4] Its gravitational effects could explain the peculiar clustering of orbits for a group of extreme trans-Neptunian objects (ETNOs), bodies beyond Neptune that orbit the Sun at distances averaging more than 250 times that of the Earth i.e. over 250 astronomical units (AU).
Scientists say they have found new evidence that there is a hidden planet in our solar system. For years, some astronomers have been suggesting that unusual behaviour on the edge of our solar ...
The missing Planet Nine is lurking somewhere in our solar system, and we're one step closer to discovering it. See why scientists think they can find Planet 9.
The number of known planets in our solar system has risen and fallen over time. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach ...
Planet Nine would have a predicted mass five to ten times that of Earth, and an elongated orbit extending 400 to 800 times as far from the Sun as the Earth's. It may have been ejected from its original orbit by Jupiter during the genesis of the Solar System, wrested from another star , captured as a rogue planet , or pulled into an eccentric ...
2013 RF98 orbit in green (upper left) with hypothetical Planet Nine. 2013 RF 98 was discovered by the Dark Energy Survey on September 12, 2013, observing with the 4 m Blanco Telescope from Cerro Tololo Inter-American Observatory. [1]
A ninth planet is one form the solar system’s mysterious mass could take. After centuries of watching the skies, the map of our local solar system has grown quite detailed. In the impenetrable ...
It was listed at the Minor Planet Center and the JPL Small-Body Database on 6 April 2017 [8] with a three-year observation arc and an epoch 2017 heliocentric orbital period of 17,500 years. [3] Barycentric orbital solutions, however, are more stable for objects on multi-thousand year orbits, and the barycentric period for 2013 SY 99 is 19,700 ...