Other Companions of Earth
Earth has a second companion, asteroid 3753 Cruithne, about 5 km across, in a peculiar type of orbital resonance called an overlapping horseshoe. It is probably only a temporary liaison. Several other small objects have been found in similar orbits. Although these objects are in 1:1 orbital resonance, they are not Earth trojans because each of them does not librate around a definite Sun–Earth Lagrangian point, either L4 or L5.
Read more about this topic: Earth Trojan Asteroid
Famous quotes containing the words companions and/or earth:
“The poet is no tender slip of fairy stock, who requires peculiar institutions and edicts for his defense, but the toughest son of earth and of Heaven, and by his greater strength and endurance his fainting companions will recognize the God in him. It is the worshipers of beauty, after all, who have done the real pioneer work of the world.”
—Henry David Thoreau (1817–1862)
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—Clive Bell (1881–1962)