{"id":10138,"date":"2022-02-06T08:42:03","date_gmt":"2022-02-06T08:42:03","guid":{"rendered":"http:\/\/TheNextWeb=1379686"},"modified":"2022-02-06T08:42:03","modified_gmt":"2022-02-06T08:42:03","slug":"astronomers-discovered-a-new-asteroid-sharing-earths-orbit-heres-why-it-matters","status":"publish","type":"post","link":"https:\/\/www.londonchiropracter.com\/?p=10138","title":{"rendered":"Astronomers discovered a new asteroid sharing Earth\u2019s orbit \u2013 here\u2019s why it matters"},"content":{"rendered":"\n<p>Research has shown that the Earth trails an asteroid barely a kilometer across in its orbit about the Sun \u2013 only the second such body to have ever been spotted. It goes around the Sun on average two months ahead of the Earth, dancing around in front like an excited herald of our coming.<\/p>\n<p>This object, known as 2020 XL\u2085, was first spotted in December 2020 using <a href=\"https:\/\/hubblesite.org\/contents\/media\/images\/2019\/12\/4315-Image.html?news=true#:%7E:text=The%20Pan%2DSTARRS%20Observatory%20is,in%20many%20colors%20of%20light.\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Pan-STARRS telescopes<\/a> on the summit of Haleakala on the Hawaiian island of Maui. But the determination of its orbit required follow-up observations using the 4.1-meter <a href=\"https:\/\/noirlab.edu\/science\/programs\/ctio\/telescopes\/soar-telescope\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">SOAR (Southern Astrophysical Research) telescope<\/a> in Chile.<\/p>\n<figure class=\"align-center \" readability=\"6\">\n<p><figure class=\"post-image post-mediaBleed aligncenter\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\" sizes=\"(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\" alt=\"Image plotting 500 years of 2020 XL5 orbits.\" width=\"600\" height=\"423\" class=\"js-lazy\" data-srcset=\"https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=423&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=423&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=423&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=531&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=531&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=531&amp;fit=crop&amp;dpr=3 2262w\"><figcaption><a href=\"https:\/\/thenextweb.com\/news\/astronomers-discovered-new-trojan-asteroid-sharing-earths-orbit-why-it-matters#\" data-url=\"https:\/\/twitter.com\/intent\/tweet?url=https%3A%2F%2Feditorial.thenextweb.com%2Fspace%2F2022%2F02%2F06%2Fastronomers-discovered-new-trojan-asteroid-sharing-earths-orbit-why-it-matters%2F&amp;via=thenextweb&amp;related=thenextweb&amp;text=Check out this picture on: 500 years of 2020 XL5 orbits plotted, relative to Earth. By Phoenix7777 \u2013 Own work data source: HORIZONS System, JPL, NASA CC BY-SA 4.0\" data-title=\"Share 500 years of 2020 XL5 orbits plotted, relative to Earth. By Phoenix7777 \u2013 Own work data source: HORIZONS System, JPL, NASA CC BY-SA 4.0 on Twitter\" data-width=\"685\" data-height=\"500\" class=\"post-image-share popitup\" title=\"Share 500 years of 2020 XL5 orbits plotted, relative to Earth. By Phoenix7777 \u2013 Own work data source: HORIZONS System, JPL, NASA CC BY-SA 4.0 on Twitter\"><i class=\"icon icon--inline icon--twitter--dark\"><\/i><\/a>500 years of 2020 XL5 orbits plotted, relative to Earth. By Phoenix7777 \u2013 Own work data source: HORIZONS System, JPL, NASA CC BY-SA 4.0<\/figcaption><noscript><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\" alt=\"Image plotting 500 years of 2020 XL5 orbits.\" width=\"600\" height=\"423\" class srcset=\"https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=423&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=423&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=423&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=531&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=531&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/444108\/original\/file-20220202-21-1vs4ucu.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=531&amp;fit=crop&amp;dpr=3 2262w\"><\/noscript><\/figure><figcaption><\/figcaption><\/p>\n<\/figure>\n<p>Based on this data, a team led by planetary scientist <a href=\"https:\/\/astronomycommunity.nature.com\/users\/toni-santana-ros\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Toni Santana-Ros<\/a> of the University of Alicante in Spain has <a href=\"https:\/\/noirlab.edu\/public\/news\/noirlab2205\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">now announced<\/a> that 2020 XL\u2085 is trapped for at least the next several thousand years in an orbit about one of the Sun-Earth&nbsp;\u201cLagrange points\u201d. These are where the gravitational forces of the Earth and the Sun balance to create stable locations. It means the object keeps pace with the Earth as it goes around the Sun.<\/p>\n<p>Lagrange points exist around other planets too, they are equilibrium points for any objects with small mass under the influence of any two much more massive bodies. There are three such points on the Sun-Earth&nbsp;line (L1, L2 and L3, see image below), first discovered mathematically by the Swiss mathematician Leonhard Euler. Spacecraft, such as <a href=\"https:\/\/theconversation.com\/james-webb-telescope-how-it-could-uncover-some-of-the-universes-best-kept-secrets-173717\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">James Webb Space Telecope<\/a> (at L2) and <a href=\"https:\/\/theconversation.com\/moon-crashing-rocket-will-create-new-crater-heres-what-we-should-worry-about-175773\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">DSCOVR<\/a> (at L1), can be maintained there with only a small expenditure of fuel.<\/p>\n<figure class=\"align-center \" readability=\"3\">\n<p><figure class=\"post-image post-mediaBleed aligncenter\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\" sizes=\"(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\" alt=\"Lagrange points in relaton to Earth's orbit\" width=\"600\" height=\"337\" class=\"js-lazy\" data-srcset=\"https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=337&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=337&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=337&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=423&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=423&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=423&amp;fit=crop&amp;dpr=3 2262w\"><figcaption><a href=\"https:\/\/thenextweb.com\/news\/astronomers-discovered-new-trojan-asteroid-sharing-earths-orbit-why-it-matters#\" data-url=\"https:\/\/twitter.com\/intent\/tweet?url=https%3A%2F%2Feditorial.thenextweb.com%2Fspace%2F2022%2F02%2F06%2Fastronomers-discovered-new-trojan-asteroid-sharing-earths-orbit-why-it-matters%2F&amp;via=thenextweb&amp;related=thenextweb&amp;text=Check out this picture on: The Lagrange points associated with Earth\u2019s orbit (sizes and distances not to scale). Credit: NOIRLab\/NSF\/AURA\/J. da Silva\" data-title=\"Share The Lagrange points associated with Earth\u2019s orbit (sizes and distances not to scale). Credit: NOIRLab\/NSF\/AURA\/J. da Silva on Twitter\" data-width=\"685\" data-height=\"500\" class=\"post-image-share popitup\" title=\"Share The Lagrange points associated with Earth\u2019s orbit (sizes and distances not to scale). Credit: NOIRLab\/NSF\/AURA\/J. da Silva on Twitter\"><i class=\"icon icon--inline icon--twitter--dark\"><\/i><\/a>The Lagrange points associated with Earth\u2019s orbit (sizes and distances not to scale). Credit: NOIRLab\/NSF\/AURA\/J. da Silva<\/figcaption><noscript><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\" alt=\"Lagrange points in relaton to Earth's orbit\" width=\"600\" height=\"337\" class srcset=\"https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=337&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=337&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=337&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=423&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=423&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/444250\/original\/file-20220203-25-1vqxt89.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=423&amp;fit=crop&amp;dpr=3 2262w\"><\/noscript><\/figure><figcaption><\/figcaption><\/p>\n<\/figure>\n<p>Two other points, L4 and L5, were discovered in 1772 by Euler\u2019s student <a href=\"https:\/\/en.wikipedia.org\/wiki\/Joseph-Louis_Lagrange\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Joseph-Louis Lagrange<\/a>. Here, a small-mass object making an equilateral triangle with Sun and Earth is in a stable equilibrium. These points are 60 degrees ahead of and 60 degrees behind the Earth, and because 60 degrees (see image above) is one-sixth of the Earth\u2019s orbit this amounts to two months separation.<\/p>\n<p>If a small-mass object is perturbed so as to move away from L4 or L5, the combined gravity of the Sun and Earth draws it back \u2013 bending its path into a stable orbit around the Lagrange point that looks kidney bean-shaped relative to Earth.<\/p>\n<h2>XL5, but no fireball<\/h2>\n<p>2020 XL\u2085 is being called a Trojan companion to the Earth by analogy with Jupiter\u2019s Trojan asteroids. Jupiter shares its orbit with nearly ten thousand known asteroids, half of them ahead of Jupiter, and half behind. The first of those, discovered in 1906, was named Achilles after a central character at the <a href=\"https:\/\/theconversation.com\/from-the-iliad-to-circe-cultures-enduring-fascination-with-the-myths-of-troy-127405\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">siege of Troy<\/a> in Homer\u2019s Iliad.<\/p>\n<p>A convention developed to name each one after a hero from the same story. Only those trailing Jupiter (clustered at the Sun-Jupiter L5 position) are given Trojan names, such as Hektor, whereas those ahead of Jupiter (at L4) are given Greek names, such as Achilles. Collectively, whether at L4 or L5 they are all referred to as Trojans.<\/p>\n<figure class=\"align-center \" readability=\"3\">\n<p><figure class=\"post-image post-mediaBleed aligncenter\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\" sizes=\"(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\" alt=\"Image showing asteroid positions, with Jupiter's Trojans in green\" width=\"600\" height=\"600\" class=\"js-lazy\" data-srcset=\"https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=600&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=600&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=600&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=754&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=754&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=754&amp;fit=crop&amp;dpr=3 2262w\"><figcaption><a href=\"https:\/\/thenextweb.com\/news\/astronomers-discovered-new-trojan-asteroid-sharing-earths-orbit-why-it-matters#\" data-url=\"https:\/\/twitter.com\/intent\/tweet?url=https%3A%2F%2Feditorial.thenextweb.com%2Fspace%2F2022%2F02%2F06%2Fastronomers-discovered-new-trojan-asteroid-sharing-earths-orbit-why-it-matters%2F&amp;via=thenextweb&amp;related=thenextweb&amp;text=Check out this picture on: Asteroid positions, with Jupiter\u2019s Trojans in green. Credit: Wikimedia Commons\" data-title=\"Share Asteroid positions, with Jupiter\u2019s Trojans in green. Credit: Wikimedia Commons on Twitter\" data-width=\"685\" data-height=\"500\" class=\"post-image-share popitup\" title=\"Share Asteroid positions, with Jupiter\u2019s Trojans in green. Credit: Wikimedia Commons on Twitter\"><i class=\"icon icon--inline icon--twitter--dark\"><\/i><\/a>Asteroid positions, with Jupiter\u2019s Trojans in green. Credit: Wikimedia Commons<\/figcaption><noscript><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\" alt=\"Image showing asteroid positions, with Jupiter's Trojans in green\" width=\"600\" height=\"600\" class srcset=\"https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=600&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=600&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=600&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=754&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=754&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/444147\/original\/file-20220202-19-e2q97t.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=754&amp;fit=crop&amp;dpr=3 2262w\"><\/noscript><\/figure>\n<\/p>\n<\/figure>\n<p>Small numbers of Trojan asteroids have now been discovered associated with Neptune (23), Uranus (1), and <a href=\"https:\/\/thenextweb.com\/topic\/mars\" target=\"_blank\" rel=\"noopener noreferrer\">Mars<\/a> (9). But 2020 XL\u2085 is only the second Trojan companion of Earth to have been found. The first, 2010 TK\u2087, was <a href=\"https:\/\/theconversation.com\/earths-first-trojan-found-say-hello-to-our-little-friend-2525\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">discovered in 2010<\/a>. That\u2019s only about 300 meters across, so 2020 XL\u2085 considerably outmasses it at about 1.2km across.<\/p>\n<p>There are probably many more Earth Trojans, but they are hard to discover from Earth because they can only ever be seen fairly low in the pre-dawn sky if at L4 like both 2010 TK\u2087 and 2020 XL\u2085, or just after sunset if at L5 (where none have yet been found). Their orbits are not stable over millions of years, so they can\u2019t be remnants that have been there ever since Earth\u2019s formation but must have drifted into place later.<\/p>\n<p>However, the SOAR observations were able to show that 2020 XL\u2085 appears to be a carbon-rich asteroid (called C-type). So it is a sample of what the Solar System was built from, and it would be instructive to study Earth\u2019s Trojan companions in more detail as examples of unaltered material.<\/p>\n<p>But could we mine them or use them in other ways? Santana-Ros notes that 2020 XL\u2085 has an orbit that bobs above and below Earth\u2019s orbital plane. This means that to maneuver a spacecraft into a rendezvous (to orbit or land on it) would require considerable velocity change. That would probably need too much fuel to be practical. The same applies to 2010 TK\u2087.<\/p>\n<p>However, the study points out that if other Earth Trojans are found in orbits that are less tilted, these might make handy bases as staging posts for exploration of the Solar System. They\u2019d be much easier to take off from than from the Earth or Moon because their gravity is so slight. They could even be a source of resources that we could mine.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/counter.theconversation.com\/content\/176272\/count.gif?distributor=republish-lightbox-basic\" alt=\"The Conversation\" width=\"1\" height=\"1\" class=\"js-lazy\"><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https:\/\/theconversation.com\/republishing-guidelines --><\/p>\n<p><noscript><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/counter.theconversation.com\/content\/176272\/count.gif?distributor=republish-lightbox-basic\" alt=\"The Conversation\" width=\"1\" height=\"1\" class><\/noscript><\/p>\n<p><em>This article by <a href=\"https:\/\/theconversation.com\/profiles\/david-rothery-121323\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">David Rothery<\/a>, Professor of Planetary Geosciences, <a href=\"https:\/\/theconversation.com\/institutions\/the-open-university-748\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">The Open <\/a>University is&nbsp;republished from <a href=\"https:\/\/theconversation.com\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">The Conversation<\/a> under a Creative Commons license. Read the <a href=\"https:\/\/theconversation.com\/asteroid-sharing-earths-orbit-discovered-could-it-help-future-space-missions-176272\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">original article<\/a>.<\/em><\/p>\n<p> <a href=\"https:\/\/thenextweb.com\/news\/astronomers-discovered-new-trojan-asteroid-sharing-earths-orbit-why-it-matters\">Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Research has shown that the Earth trails an asteroid barely a kilometer across in its orbit about the Sun \u2013 only the second such body to have ever been spotted. It goes&#8230;<\/p>\n","protected":false},"author":1,"featured_media":10139,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/posts\/10138"}],"collection":[{"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10138"}],"version-history":[{"count":0,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/posts\/10138\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/media\/10139"}],"wp:attachment":[{"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}