Apollo asteroid
From Freepedia
The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo, the first asteroid of this group to be discovered. They are Earth-crosser asteroids that have orbital semi-major axes greater than that of the Earth. Some can get very close to the Earth, making them a potential threat to our planet (the closer their semi-major axis is to Earth's, the less eccentricity is needed for the orbits to cross).
The largest known Apollo asteroid is 1866 Sisyphus, with a diameter of about 10 km.
Well-known Apollo asteroids include:
Related topics
External links
| The minor planetsedit |
| Vulcanoids | Main belt | Groups and families | Near-Earth objects | Jupiter Trojans |
| Centaurs | Damocloids | Comets | Trans-Neptunians (Kuiper belt | Scattered disc | Oort cloud) |
| For other objects and regions, see: Binary asteroids, Asteroid moons and the Solar system For a complete listing, see: List of asteroids. For pronunciation, see: Pronunciation of asteroid names. |



