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Trojan asteroids are minor planets that share the orbit of a planet about the Sun and librate around the L4 or L5 Lagrangian points of stability. They are important solar-system fossils because they carry information on early Solar System…

Earth and Planetary Astrophysics · Physics 2012-04-27 M. Todd , P. Tanga , D. M. Coward , M. G. Zadnik

Earth Trojan Asteroids are an important but elusive population that co-orbit with Earth at the L4 and L5 Lagrange points. There is only one known, but a large population is theoretically stable and could provide insight into our solar…

Earth and Planetary Astrophysics · Physics 2021-06-28 Noah Lifset , Nathan Golovich , Eric Green , Robert Armstrong , Travis Yeager

Trojan asteroids orbit in the Lagrange points of the system Sun-planet-asteroid. Their dynamical stability make their physical properties important proxies for the early evolution of our solar system. To study their origin, we want to…

Earth and Planetary Astrophysics · Physics 2016-01-13 S. Bagnulo , I. N. Belskaya , A. Stinson , A. Christou , G. B. Borisov

The origin of the Jupiter Trojan asteroids has long been a mystery. Dynamically, the population, which is considerably smaller than the main asteroid belt, librates around Jupiter's stable L4 and L5 Lagrange points, 60 deg ahead and behind…

Earth and Planetary Astrophysics · Physics 2023-12-06 William F. Bottke , Raphael Marschall , David Nesvorný , David Vokrouhlický

A co-orbital asteroid shares the orbit of a secondary body about its primary. Though more commonly encountered as an asteroid that shares a planet's orbit around the Sun, a co-orbital asteroid could similarly share the orbit of the Moon…

Earth and Planetary Astrophysics · Physics 2022-03-16 Cole R. Gregg , Paul A. Wiegert

Trojan asteroids are minor planets that share the orbit of a planet about the Sun and librate around the L4 or L5 Lagrangian points of stability. They are important because they carry information on early Solar System formation, when…

Earth and Planetary Astrophysics · Physics 2012-12-04 M. Todd , D. M. Coward , M. G. Zadnik

The Lucy Mission accomplishes its science during a series of five flyby encounters with seven Trojan asteroid targets. This mission architecture drives a concept of operations design that maximizes science return, provides redundancy in…

Jupiter Trojan asteroids are located around L4 and L5 Lagrangian points on relatively stable orbits, in 1:1 MMR with Jupiter. However, not all of them lie in orbits that remain stable over the age of the Solar System. Unstable zones allow…

Earth and Planetary Astrophysics · Physics 2018-11-02 Romina P. Di Sisto , Ximena S. Ramos , Tabaré Gallardo

Observational searches for asteroids orbiting near Earth's triangular Lagrange points face unique obstacles. A population of such asteroids would occupy a large projected area on the sky (possibly hundreds of square degrees) and is not…

Astrophysics · Physics 2009-10-31 Paul Wiegert , Kimmo Innanen , Seppo Mikkola

Asteroid pairs, two objects that are not gravitationally bound to one another, but share a common origin, have been discovered in the Main belt and Hungaria populations. Such pairs are of major interest, as the study of their evolution…

Earth and Planetary Astrophysics · Physics 2020-10-14 Timothy R. Holt , David Vokrouhlický , David Nesvorný , Miroslav Brož , Jonathan Horner

Trojan asteroids are minor planets that share the orbit of a planet about the Sun and librate around the L4 or L5 Lagrangian points of stability. Although only three Mars Trojans have been discovered, models suggest that at least ten times…

Earth and Planetary Astrophysics · Physics 2012-07-10 M. Todd , P. Tanga , D. M. Coward , M. G. Zadnik

Of the four giant planets in the Solar system, only Jupiter and Neptune are currently known to possess swarms of Trojan asteroids - small objects that experience a 1:1 mean motion resonance with their host planet. In Lykawka et al. (2009),…

Earth and Planetary Astrophysics · Physics 2011-10-11 P. S. Lykawka , J. Horner

The detection of Earth-like planets, exocomets or Kuiper belts show that the different components found in the solar system should also be present in other planetary systems. Trojans are one of these components and can be considered fossils…

Earth and Planetary Astrophysics · Physics 2018-01-24 J. Lillo-Box , D. Barrado , P. Figueira , A. Leleu , N. C. Santos , A. C. M. Correia , P. Robutel , J. P. Faria

The Trojan clouds contain a surprisingly diverse population of objects. It is only by understanding this diversity can we unravel their history. The more objects Lucy visits the better we can constrain the formation and evolution of the…

Earth and Planetary Astrophysics · Physics 2018-09-06 Megan E. Schwamb , Harold F. Levison , Marc W. Buie

Recently the first Earth Trojan has been observed (Mainzer et al., ApJ 731) and found to be on an interesting orbit close to the Lagrange point L4 (Connors et al., Nature 475). In the present study we therefore perform a detailed…

Earth and Planetary Astrophysics · Physics 2015-06-04 Rudolf Dvorak , Christoph Lhotka , Liyong Zhou

Various properties of Jovian trojan asteroids such as composition, rotation periods, and photometric amplitudes, or the rate of binarity in the population can provide information and constraints on the evolution of the group and of the…

We analyze 1187 observations of about 860 unique candidate Jovian Trojan asteroids listed in the 3rd release of Sloan Digital Sky Survey (SDSS) Moving Object Catalog. The sample is complete at the faint end to r=21.2 mag (apparent…

Astrophysics · Physics 2009-11-13 Gy. M. Szabo , Z. Ivezic , M. Juric , R. Lupton

Jupiter Trojan asteroids are minor bodies that share Jupiter's orbit around the Sun. Although not yet well understood in origin and composition, they have surface properties that, besides being comparable with other populations of small…

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