[sci.space.shuttle] Asteroid/Earth Close Encounter

mae@vygr.Sun.COM (Mike Ekberg, Sun {GPD-LEGO}) (04/26/89)

I heard a TV news teaser two days ago that mentioned
something about an asteroid coming close to the
earth recently. Haven't heard anything about it
since.

Near is a relative term. I assume the odds a good-sized
asteroid striking the earth in the near future is 
(ahem) astronomical. Does any space organization watch for 
such things? or is it not worth bothering about?


#mike (sun!mae), M/S 8-40
#"There's nothing human that's alien to us." - A. Einstein

hinojosa@hp-sdd.hp.com (Daniel Hinojosa) (04/26/89)

In article <101062@sun.Eng.Sun.COM> mae@vygr.Sun.COM (Mike Ekberg, Sun {GPD-LEGO}) writes:
>I heard a TV news teaser two days ago that mentioned
>something about an asteroid coming close to the
>earth recently. Haven't heard anything about it
>since.
 
I read an article in the L.A. Times about this event. Seems the asteroid
in question came amazingly close to earth. That is, amazingly close
in the overall scope of the universe. 500 million miles close. The
article described that distance as twice the distance of the moon to
earth. I don't recall the article giving dimensions of the asteroid,
but it must have been exceptionally large for scientists <sp?> to even
have noticed it. 



-- 
==dan=hinojosa==================================================================
           email -  uunet!ucsd!hp-sdd!hinojosa \ / uunet!hplabs!hp-sdd!hinojosa
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     Jesus saves... but Gretzky gets the rebound! He shoots. HE SCOOORES!!!

mveh2@cbnews.ATT.COM (edward.holdgate.iv) (04/26/89)

From article <101062@sun.Eng.Sun.COM>, by mae@vygr.Sun.COM (Mike Ekberg, Sun {GPD-LEGO}):
> I heard a TV news teaser two days ago that mentioned
> something about an asteroid coming close to the
> earth recently. Haven't heard anything about it
> since.
> 
> Near is a relative term. I assume the odds a good-sized
> asteroid striking the earth in the near future is 
> (ahem) astronomical. Does any space organization watch for 
> such things? or is it not worth bothering about?
> 

This week's TIME magazine has an article that says this asteroid passed
the earth at a distance twice as far as the earth-moon distance.  It
also indicates that we would be lucky to get one days warning (let alone
enough time to break it up or redirect it.)  Furthermore, it will make 
another close pass in about 30 (?) more years.

Follow-ups to sci.space...
#					Ed Holdgate
# standard disclaimers apply...		AT&T Network Systems, MVW
#					att!mvgpd!mveh2

phil@titan.rice.edu (William LeFebvre) (04/27/89)

In article <101062@sun.Eng.Sun.COM> mae@vygr.Sun.COM (Mike Ekberg, Sun {GPD-LEGO}) writes:
>I heard a TV news teaser two days ago that mentioned
>something about an asteroid coming close to the
>earth recently. 

I heard that at its closest, its distance was twice that of the moon.
That's actually pretty close on a cosmic scale.  They also didn't see it
approaching---I think they didn't spot it until it was at its closest
distance (or maybe after).

So what's this doing in sci.space.SHUTTLE, anyway?

			William LeFebvre
			Department of Computer Science
			Rice University
			<phil@Rice.edu>

sl161011@silver.bacs.indiana.edu (Kevin Clendenien) (04/27/89)

In article <101062@sun.Eng.Sun.COM> mae@vygr.Sun.COM (Mike Ekberg, Sun {GPD-LEGO}) writes:
>I heard a TV news teaser two days ago that mentioned
>something about an asteroid coming close to the
>earth recently. Haven't heard anything about it
>since.
>
>#mike (sun!mae), M/S 8-40

The asterioid in question, at it's closest point, was slightly less than
twice the distance to the moon from the earth.  Experts estimate that if
it had hit the earth, it would have had a total destructive force of
20,000 (1 megaton) nuclear bombs, leaving a crater 5 miles deep, and 10
miles across.  If it had landed in the ocean, some serious tidal waves
could be expected.  The asteroid was not sighted as it passed, but was
discovered on photographic plates.  It is believed that it will pass
this way again, and again.
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sl161011@silver.UUCP                                    Kevin B. Clendenien
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jokim@jarthur.Claremont.EDU (John H. Kim) (05/02/89)

In article <1945@hp-sdd.hp.com> hinojosa@hp-sdd.UUCP (Daniel Hinojosa) writes:
>
>I read an article in the L.A. Times about this event. Seems the asteroid
>in question came amazingly close to earth. That is, amazingly close
>in the overall scope of the universe. 500 million miles close. The
>article described that distance as twice the distance of the moon to
>earth. I don't recall the article giving dimensions of the asteroid,

500 000 miles.  500 000 000 miles is more like the closest the earth
gets to jupiter, or maybe saturn, I forget.
-- 
John H. Kim                 | (This space to be filled when I
jokim@jarthur.Claremont.EDU | think of something very clever 
uunet!muddcs!jarthur!jokim  | to use as a disclaimer)