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The orbits of Sedna, 2012 VP 113, Leleākūhonua, and other very distant objects along with the predicted orbit of Planet Nine [A]. An extreme trans-Neptunian object (ETNO) is a trans-Neptunian object orbiting the Sun well beyond Neptune (30 AU) in the outermost region of the Solar System.
Planet Nine is a hypothetical ninth planet in the outer region of the Solar System. [4] [2] 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).
The former Moscow City Hall (Russian: Здание городской думы, lit. 'City Duma building') is an ornate red-brick edifice situated immediately to the east of the State Historical Museum and notable in the history of architecture as a unique hybrid of the Russian Revival and Neo-Renaissance styles. During Soviet times it served ...
The hypothetical Planet Nine would modify the orbits of extreme trans-Neptunian objects via a combination of effects. On very long timescales exchanges of angular momentum with Planet Nine cause the perihelia of anti-aligned objects to rise until their precession reverses direction, maintaining their anti-alignment, and later fall, returning them to their original orbits.
This list includes all numbered trans-Neptunian objects with a semi-major axis greater than 30.1 astronomical units (AU), Neptune's average orbital distance from the Sun. The data is sourced from MPC's "List of Trans Neptunian Objects" and "List Of Centaurs and Scattered-Disk Objects", in addition to MPC's "List of Neptune Trojans", completed with remarks and information from Johnston's ...
Star City (Russian: Звёздный городок, romanized: Zvyozdny gorodok, lit. 'starry townlet') is an area in Zvyozdny gorodok , Moscow Oblast , Russia , which has since the 1960s been home to the Yuri Gagarin Cosmonaut Training Center (GCTC).
The death toll from a gun attack on a concert hall near Moscow has risen to 133 as eyewitnesses recalled the moment that attackers armed with guns and incendiary devices stormed the popular venue ...
Attacks on government buildings and structures in Russia (2 C, 9 P) C. City and town halls in Russia (5 P) N. ... Moscow City Hall Building; R.