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| Image and excerpt source: COSMOS: The SAO Encyclopedia of Astronomy |
Asteroids sharing an orbit with a planet, but which are located at the leading (L4) and trailing (L5) Lagrangian points, are known as Trojan asteroids. Although Trojan asteroids have been discovered for Mars (4 to date, 1 at L4 and 3 at L5) and Neptune (8 Trojans, 6 at L4 and 2 at L5) and even Earth (1 Trojan at L4), the term ‘Trojan asteroid’ generally refers to the asteroids accompanying Jupiter.
SETI Institute: Scientific Premises and Technological Challenges of Deep Space Round Trip Exploration to Jupiter Trojans and Even Further
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