777,000 km....
In dicussing asteroids, NEO stands for Near-Earth Object. NEOs are asteroids whose orbits come close to or cross Earth's. This creates a potential hazard for a collision.
no it was not an asteroid that hit the earth, it was kevins big mouth
"Meteoroid". If it actually hits the Earth's atmosphere, the streak of light will be a "meteor", and if the object survives to impact the Earth's surface then we call the remains a "meteorite".
1991 BA is the closest and smallest asteroid yet observed outside the Earth's atmosphere. Reference.
Well I guess any asteroid could hit Earth.For a complete list of NEO - see related link .There are several hundred asteroids that could hit Earth, most of them have not been named, or even discovered yet.
Hermes
No. There is no comet or asteroid or meteor going to hit the Earth. Most of it is superstition.
Apaphis
no,masteroids are only in the asteroid belt.
a meteorite is a rock that hits the earth an asteroid is a rock just floating out in space and a meteor is a rock that comes into the earth's atmosphere but burns up
No. The asteroid has passed, having missed Earth by about 17,000 miles. That's fairly close, but scientists new it would miss by about that much.
Sin
No, an asteroid cannot destroy earth, but a large enough asteroid can have devastating effects on the life on Earth
Not without a telescope and detailed knowledge of where to look. They're tiny and not close to Earth.
Comets are difficult to predict; we currently know of no comets that will be visible in 2012, but new ones are discovered periodically. No asteroids that we are aware of will approach the Earth very closely before April 13, 2029, when the asteroid Apophis will come fairly close the Earth. (But it will miss.)
The problem with naming a particular asteroid as the one that "comes closer than any other" is that we keep discovering new asteroids flying around that come even CLOSER. At one time, the asteroid "Eros" was the one described as coming closest, but that title may now go to the asteroid Apophis. Apophis will make a very close approach to the Earth on April 13 (Friday the 13th!) 2029, and again on April 13, 2036. The 2029 pass will bring Apophis closer to the Earth than many communications satellites!
No asteroid is at all harmful to us or to Earth unless our planet and the Asteroid draw unusually close together. If that were to happen, then yes, you'd have to say that for a close encounter of any given distance, the probability of unpleasant results would vary roughly in proportion to the asteroid's physical size.