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Article: <5hglml$85k@dfw-ixnews8.ix.netcom.com>
From: saquo@ix.netcom.com(Nancy )
Subject: Re: Nancy and DejaNews
Date: 28 Mar 1997 14:47:49 GMT
In article <5gsbhm$av2@news.Hawaii.Edu> David Tholen writes:
>> the orbit has suddenly changed! 4,200 orbit period, OOPS,
>> now its 2,380.
>> ZetaTalk[TM]
>
> The former was before the approach to Jupiter, the latter is after
> the approach to Jupiter.
> tholen@galileo.ifa.hawaii.edu
Oh really? Funny but the papers were reporting the 4,200 year orbit as late as early February, and just last February 19 Jim Scotti made NO MENTION of the new orbit period. Below, that posting.
...........
Article: <5ee4sg$89h@dfw-ixnews7.ix.netcom.com>
From: saquo@ix.netcom.com(Nancy )
Subject: Re: Hale-Bopp THEN and NOW (1-6)
Date: 19 Feb 1997 05:59:44 GMT
In article <5ecsv0$diu@news.ccit.arizona.edu> Jim Scotti writes:
>>> Hale-Bopp is not a first time comet - it has been through
>>> the inner solar system before, the last time, about 4,200
>>> years ago.
>>> jscotti@LPL.Arizona.EDU (Jim Scotti)
>
>> (ZetaTalk[TM])
>> Oh, and how do you KNOW that, Jim.
>
> I know that Hale-Bopp has been around at least once before
> because [we] integrated the present orbit of the comet, as
> computed and published by Brian Marsden ..
> backwards in time in order to see how this type of orbit
> behaves. ... we integrated the trajectories of many objects
> with orbits very similar to that calculated from the present
> observations of Hale-Bopp. .. We can then see what
> HB-like orbits do.
> jscotti@LPL.Arizona.EDU (Jim Scotti)