City-Sized Asteroid to Pass Earth This Fall

In summary, on Sept. 29, 2004, an asteroid the size of a small city, named Toutatis, will make the closest known pass of such a very large space rock anytime this century. Scientists are eager to learn more about its crazy rotation and shape during this close pass, and even backyard skywatchers will be able to spot it. It will zoom by Earth within a million miles, about four times the distance to the Moon.
  • #1
Evo
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"On Sept. 29, 2004 an asteroid the size of a small city will make the closest known pass of such a very large space rock anytime this century."

"Toutatis looks something like a dumbbell hurtling awkwardly through space. It has a crazy rotation that makes normal days impossible. Scientists can't explain the shape or the spin, but they're eager to learn more in September when, during the close pass, even backyard skywatchers will be able to spot the asteroid."

article at http://www.space.com/scienceastronomy/mystery_monday_040503.html
 
Astronomy news on Phys.org
  • #2
Evo said:
"On Sept. 29, 2004 an asteroid the size of a small city will make the closest known pass of such a very large space rock anytime this century."

Wasn't there an asteroid that bounced off of Earth's atmosphere a few years ago? I seem to recall that in the news about 1997/98.
 
  • #3
Thanks for the link Evo. It's worth mentioning this to put everyone's mind at ease

it will zoom by our planet within a million miles, or about four times the distance to the Moon.
 
  • #4
Good idea Phobos, since not everyone will read the entire article. :frown:
 

1. How large is the city-sized asteroid that is passing Earth this fall?

The asteroid, known as 2016 NF23, is estimated to be between 70 and 160 meters in diameter.

2. How close will the asteroid come to Earth?

The asteroid will pass by Earth at a distance of about 5.2 million kilometers, or 3.2 million miles. This is more than 13 times the distance between Earth and the Moon.

3. Is there any danger of the asteroid colliding with Earth?

No, there is no danger of the asteroid colliding with Earth. It will safely pass by our planet without any impact.

4. How often do city-sized asteroids pass by Earth?

Asteroids of this size pass by Earth quite frequently, with an estimated rate of one every few years. However, most of them do not come as close as 2016 NF23 will.

5. Will this asteroid be visible to the naked eye?

No, the asteroid will not be visible to the naked eye. It will require a telescope with at least a 20 cm aperture to be able to spot it.

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