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An Earth trojan is an asteroid that orbits the Sun in the vicinity of the Earth–Sun Lagrange points L 4 (leading 60°) or L 5 (trailing 60°), thus having an orbit similar to Earth's. Only two Earth trojans have so far been discovered.
(614689) 2020 XL 5 (provisional designation 2020 XL 5) is a near-Earth asteroid and Earth trojan discovered by the Pan-STARRS 1 survey at Haleakala Observatory, Hawaii on 12 December 2020. It oscillates around the Sun – Earth L 4 Lagrangian point (leading 60°), one of the dynamically stable locations where the combined gravitational force ...
Its movements do not bring it any closer to Earth than 20 million kilometers (12.4 million miles), which is more than 50 times the distance to the Moon. 2010 TK 7 was at the near-Earth end of its tadpole in 2010–2011, [4] which facilitated its discovery. 2010 TK 7 's orbit has a chaotic character, making long-range predictions difficult.
In some ways these asteroids look similar to the near-Earth asteroid binary Didymos and Dimorphos that DART saw, ... There are about 7,000 Trojan asteroids, and the largest is 160 miles (257 ...
"Binary asteroid systems represent about 10-15% of the total number of asteroids that are in near-Earth space," Barnouin said. "More generally, with every new observation of an asteroid or ...
Near-Earth object detection technology began to improve around 1998, so objects being detected as of 2004 could have been missed only a decade earlier due to a lack of dedicated near-Earth astronomical surveys. As sky surveys improve, smaller and smaller asteroids are regularly being discovered.
Another 8% of the Earth meteorites can be traced to the Flora and Nysa asteroid families in the main asteroid belt, the research found. And about 6% of the meteorites can be traced to Vesta, it ...
[14] (614689) 2020 XL 5 was found to be another Earth trojan in 2021. It is also at L4. [15] [16] (687170) 2011 QF 99 was identified as the first Uranus trojan in 2013. It is located at the L 4 Lagrangian point. A second one, (636872) 2014 YX 49, was announced in 2017. [17] 2013 ND 15 is a temporary Venusian trojan, the first one to be identified.