Trojan asteroids

Trojan asteroids
Two groups of asteroids named for heroes of Greece and Troy in Homer's Iliad.

These objects revolve around the Sun at the Lagrangian points (see Joseph-Louis Lagrange) in Jupiter's orbit. Achilles, the first, was discovered in 1906. About 650 are known, but their actual number is estimated in the thousands. The term Trojan also applies to objects occupying the corresponding Lagrangian points in the orbits of other planets. Two such asteroids were discovered in Mars's orbit in the 1990s.

* * *


Universalium. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • Trojan asteroids — or Trojan group, a group of asteroids that revolve to form an equilateral triangle with Jupiter and the sun. Most of them were named after heroes of the Trojan war …   Useful english dictionary

  • List of Mars trojan asteroids — The L5 group (shown in green) of Asteroids on the orbit of Mars (Mars is shown in red). The L4 group is the light blue region also on Mars orbit. The Mars trojans are a group of objects that share the orbit of the planet Mars around the …   Wikipedia

  • List of Trojan asteroids (Trojan camp) — This is a list of Jupiter s Trojan asteroids that lie in the elongated, curved regions around the trailing L5 Lagrangian point 60° behind Jupiter in the same orbit.All the asteroids at the trailing L5 point have names corresponding to… …   Wikipedia

  • List of Trojan asteroids (Greek camp) — This is a list of Jupiter s Trojan asteroids that lie in the elongated, curved regions around the leading L4 Lagrangian point 60° ahead of Jupiter in the same orbit.All the asteroids at the leading L4 point have names corresponding to… …   Wikipedia

  • trojan group — noun Usage: usually capitalized T : trojan asteroids * * * Astron. a group of asteroids oscillating about either of two points, equidistant from the sun and Jupiter, that forms an equilateral triangle with the sun and Jupiter. * * * Trojan… …   Useful english dictionary

  • Trojan (astronomy) — In astronomy, the adjective trojan refers to a minor planet or natural satellite (moon) that shares an orbit with a larger planet or moon, but does not collide with it because it orbits around one of the two Lagrangian points of stability, L4 and …   Wikipedia

  • Trojan pronunciation — Pronunciation of the Trojan asteroids= The names of the Trojan asteroids are taken from Greek mythology, so the pronunciations of all are predictable once the Greek or Latin orthography with long vowel marking is known. Following is a list of the …   Wikipedia

  • Trojan planets — ▪ astronomy       two groups of asteroids named for heroes of Greece and Troy in Homer s Iliad. These minor planets revolve around the Sun in the Lagrangian points of Jupiter s (Jupiter) orbit. These are positions where a small body can be held,… …   Universalium

  • Trojan group — Astron. a group of asteroids oscillating about either of two points, equidistant from the sun and Jupiter, that forms an equilateral triangle with the sun and Jupiter. * * * …   Universalium

  • Trojan group — /troʊdʒən ˈgrup/ (say trohjuhn groohp) noun Astronomy a group of asteroids which have the same mean motion as the planet Jupiter; they are divided into two subgroups which oscillate between two points, equidistant from the sun and Jupiter,… …  

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”