Английская Википедия:2011 QF99

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Asteroid Шаблон:Mp is a minor planet from the outer Solar System and the first known Uranus trojan to be discovered. It measures approximately Шаблон:Convert in diameter, assuming an albedo of 0.05. It was first observed 29 August 2011 during a deep survey of trans-Neptunian objects conducted with the Canada–France–Hawaii Telescope, but its identification as Uranian trojan was not announced until 2013.

Шаблон:Mp temporarily orbits near Uranus's Шаблон:L4 Lagrangian point (leading Uranus). It will continue to librate around Шаблон:L4 for at least 70,000 years and will remain a Uranus co-orbital for up to three million years. Шаблон:Mp is thus a temporary Uranus trojan—a centaur captured some time ago.

Uranus trojans are generally expected to be unstable and none of them are thought to be of primordial origin. A simulation led to the conclusion that at any given time, 0.4% of the centaurs in the scattered population within 34 AU would be Uranus co-orbitals, of which 64% (0.256% of all centaurs) would be in horseshoe orbits, 10% (0.04%) would be quasi-satellites, and 26% (0.104%) would be trojans (evenly split between the Шаблон:L4 and Шаблон:L5 groups). A second Uranian Trojan, Шаблон:Mpl, was announced in 2017.

Файл:Animation of 2011 QF99 relative to Sun and Uranus 1600-2500.gif

Animation of 2011 QF99 relative to Sun and Uranus 1600-2500
Шаблон:Legend2Шаблон:·Шаблон:Legend2Шаблон:·Шаблон:Legend2

External links

• Шаблон:JPL small body