Re: Comet impact in the Eastern United States - Feasibility of Evacuation

On Tue, 11 Mar 2008 18:35:51 -0500, "Joel Olson"
<joel_olson@[EMAIL PROTECTED]
> wrote:

>"David V. Loewe, Jr" <daveloewe@[EMAIL PROTECTED]
> wrote:
>> On Tue, 11 Mar 2008 17:04:46 -0500, "Joel Olson"
>> <joel_olson@[EMAIL PROTECTED]
> wrote:
>>>"David V. Loewe, Jr" <daveloewe@[EMAIL PROTECTED]
> wrote:
>>>> On Mon, 10 Mar 2008 15:49:42 -0500, "Joel Olson"
>>>> <joel_olson@[EMAIL PROTECTED]
> wrote:
>>>>>"David V. Loewe, Jr" <daveloewe@[EMAIL PROTECTED]
> wrote:
>>>>>> On Sun, 9 Mar 2008 16:45:10 -0500, "Joel Olson"
>>>>>> <joel_olson@[EMAIL PROTECTED]
> wrote:
>>
>> <Pittsburgh Impactor>
>>
>>>>>>>I disagree. Given a reasonable time interval, the trajectory and
mass
>>>>>>>can be observed to almost total accuracy.
>>                               ^^^^^^^^^^^^^^
>>>>>>
>>>>>> Because, since it is a comet, there will be no randomly situated
>>>>>> outgassings which will not produce random jinks and jukes in the
>>>>>> motion of the incoming comet...
>>>>>>
>>>>>> Right.
>>>>>
>>>>>Moving toward or away from the sun?
>>>>
>>>> Side to side, front to back.
>>>>
>>>>>Oh! If it's that easy to deflect ...
>>>>
>>>> It's amusing how we've gone from "total accuracy" of the impact to
>>>> "easy to deflect."
>>
>>>You don't read sarcasm well, do you?
>>
>> Perhaps.  But, I can authoritatively state that you don't WRITE it
>> well.
>>
>>>If the comet is moving away from the sun, it's less likely to outgass
>>>than if its moving into a warmer regime.
>>
>> Are you saying if it moving away from the sun at Earth it CAN'T
>> outgas?
>>
>>>I'm not claiming total accuracy, just that a reasonable risk zone can
be
>>>defined.
>>
>> That wasn't YOU I responded to saying "I disagree. Given a reasonable
>> time interval, the trajectory and mass can be observed to almost total
>> accuracy."?  There is some other Joel Olson in this thread?  The two
>> of you should use your middle names to enable us to distinguish
>> between the two of you.
>>
>If you go back in the thread to before your selective editing, you'll
find
>I said a little more than that.

Which made no difference to my comment.

>Clearly, the orientation of the trajectory, relative to the earth and to
>the sun, is im****tant. So are the atmospheric conditions during its
>descent, possibly more so as the comet will be less dense than an
>asteroid. Ice vs. rock, I suppose.

At cometary speeds?!?

>Anyone know of any papers describing the effect of outgassing on a
>comet's trajectory? Is it really significant?
>
In light of your "total accuracy" comment?  Yes.
>
>>>You're saying its impossible?
>>
>> Sure, it's possible.  If it isn't a comet or if it never outg*****.
-- 
"Yes, John, but that is because you have to think the worst of everybody
else in order to avoid thinking about how much of a wanker *you* are."
David Chapman in <8kku9v$kee$4@[EMAIL PROTECTED]
> on John S. Novak, III