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bmpbmp
2004-Feb-04, 11:56 PM
This Asteroid seems to get close in may till sept. at one point less than 1 au.

Cant that be dangerous or something or am I reading this wrong.

http://neo.jpl.nasa.gov/cgi-bin/db?name=4179

SKY
2004-Feb-05, 12:02 AM
I haven't read the link yet, but 1 AU is roughly the distance between the Earth and the Sun. Personally, I'm more concerned about the ones that come between the us and the Moon.

bmpbmp
2004-Feb-05, 12:05 AM
On Sept 29 it is 0.011 Au from the earth that is like 1 650 000 Km

Is that still far off or to close for comfort

mike alexander
2004-Feb-05, 12:22 AM
Far off, like x4 lunar distance. Sleep soundly.

Archer17
2004-Feb-05, 12:40 AM
I thought I was experiencing déjà vu (http://www.badastronomy.com/phpBB/viewtopic.php?p=176903&highlight=#176903) for a second. I guess the other board is talking about it again, eh?

freddo
2004-Feb-05, 01:34 AM
As Archer17 and Sigma_Orionis have said, that's a million and a half km away (or 4 times the distance from Earth to the Moon). For a bit of context, you could consider SOHO, which I know you are familiar with. It orbits at a distance of about 1 million km. We don't hear about how it might crash into the Earth now do we?


What's your caper?

freddo
2004-Feb-05, 01:36 AM
Oh, and Remain Calm.

AGN Fuel
2004-Feb-05, 01:38 AM
This Asteroid seems to get close in may till sept. at one point less than 1 au.

Cant that be dangerous or something or am I reading this wrong.

It sounds close and astronomically it is, but from our immediate risk perspective it really is not. A very useful way to come to grips with the distances involved is to reduce the scale down to something more familiar.

For example, the Earth is roughly 12,730km in diameter. Toutatis is ~5km long and will approach to ~0.011 AU (which equates to ~1,650,000km).

If you imagine shrinking the Earth down to the size of a basketball, on that scale Toutatis will become far smaller than a mote of dust and will be nearly 40 metres away.

Emspak
2004-Feb-05, 01:49 PM
Anybody know if Toutatis is close enough to see with binoculars, at least? I think that would be really interesting. But I don't know if something that size is observable with amateur equipment.

Argos
2004-Feb-05, 04:31 PM
I thought I was experiencing déjà vu (http://www.badastronomy.com/phpBB/viewtopic.php?p=176903&highlight=#176903) for a second. I guess the other board is talking about it again, eh?

And there´s another one (http://www.badastronomy.com/phpBB/viewtopic.php?t=9490&highlight=toutatis)

Archer17
2004-Feb-05, 06:19 PM
Anybody know if Toutatis is close enough to see with binoculars, at least? I think that would be really interesting. But I don't know if something that size is observable with amateur equipment.From here: (http://science.nasa.gov/headlines/y2000/ast31oct_1.htm)
..On Sept. 29, 2004, Toutatis will pass just 4 lunar distances from Earth -- that's closer than any other known PHA will come during the next 30 years. Toutatis will be so bright -- 9th magnitude near closest approach -- that skywatchers will be able to easily see it through binoculars. As viewed from Toutatis in 2004, the Earth will appear to be the size of the Full Moon.