[meteorite-list] Rosetta gravity assist flyby

From: Jerry <grf2_at_meteoritecentral.com>
Date: Fri, 09 Nov 2007 17:17:30 -0500
Message-ID: <26B5223165FB4D86B21D826629906BA7_at_Notebook>

I think they may refer to this event as "Friendly Fire" [miss]
Jerry Flaherty
----- Original Message -----
From: "Sterling K. Webb" <sterling_k_webb at sbcglobal.net>
To: "Meteorite List" <meteorite-list at meteoritecentral.com>
Sent: Friday, November 09, 2007 4:21 PM
Subject: Re: [meteorite-list] Rosetta gravity assist flyby


> Hi,
>
> There's something re-assuring about the notion
> that we could detect a "potential impactor," even
> if we didn't immediately recognize that it's one of
> ours!
>
>
>
> Sterling K. Webb
> -------------------------------------------------------------
> ----- Original Message -----
> From: <lebofsky at lpl.arizona.edu>
> To: "mexicodoug" <mexicodoug at aol.com>
> Cc: <meteorite-list at meteoritecentral.com>
> Sent: Friday, November 09, 2007 12:49 PM
> Subject: Re: [meteorite-list] Rosetta gravity assist flyby
>
>
> The first announcment was a real one. I do not think that it was at first
> realized that it was Rosetta!
>
> I hope there will be more info in the next few days.
>
> Larry
>
> On Fri, November 9, 2007 11:35 am, mexicodoug wrote:
>> Someone has a sense of humour, especially the flying couch comment !
>>
>>
>> So, will closest approach be 20:57, 21:04, 21:13 UT, or undetermined, and
>> who will get the view? I think Rosetta won't be rising until 21:15
>> where I'm at in southern North America, and at close approach will be
>> moving at around 3 degrees (6 full moons) per minute. That is a little
>> challenging.....especially if the spacecraft is not oriented to reflect
>> much back.
>>
>> Thanks kindly,
>> Doug
>>
>>
>>
>> ----- Original Message -----
>> From: "Spaceguard" <mail at spaceguarduk.com>
>> To: <lebofsky at lpl.arizona.edu>
>> Cc: "Meteorite Mailing List" <meteorite-list at meteoritecentral.com>; "Ron
>> Baalke" <baalke at zagami.jpl.nasa.gov>
>> Sent: Friday, November 09, 2007 11:35 AM
>> Subject: Re: [meteorite-list] Did a Collision Cause
>> Comet17P/Holmes'MysteriousOutburst?
>>
>>
>>
>>> Yep. It's the Rosetta spacecraft making its planned gravity assist
>>> fly-by of the Earth.
>>>
>>> Jay Tate
>>> The Spaceguard Centre
>>>
>>>
>>> ----- Original Message -----
>>> From: <lebofsky at lpl.arizona.edu>
>>> To: <lebofsky at lpl.arizona.edu>
>>> Cc: "Meteorite Mailing List" <meteorite-list at meteoritecentral.com>; "Ron
>>> Baalke" <baalke at zagami.jpl.nasa.gov>
>>> Sent: Friday, November 09, 2007 5:24 PM
>>> Subject: Re: [meteorite-list] Did a Collision Cause Comet
>>> 17P/Holmes'MysteriousOutburst?
>>>
>>>
>>>
>>>> Hi List:
>>>>
>>>>
>>>> I am trying this again since my previouys forward did not appear to
>>>> go through.
>>>>
>>>> On November 13, this newly-discovered asteroid (only about 20 meters
>>>> diameter) will pass within 2 Earth radii of the CENTER of the Earth
>>>> (that
>>>> is close). It will be 9th magnitude (about 50-100 times too faint to
>>>> see with the naked eye), but show be observable with a small telescope
>>>> (if it
>>>> is night where you are when it comes by and you know were to look).
>>>>
>>>> Go to the cfa.harvard site for coordiantes, etc. I can interpret
>>>> columns if you are interested.
>>>>
>>>> I am sure there will be more about this in the coming days.
>>>>
>>>>
>>>> LArry
>>>>
>>>>
>>>> Begin forwarded message:
>>>>
>>>>
>>>>> From: Alan W Harris <awharris at spacescience.org>
>>>>> Date: November 8, 2007 5:15:19 PM MST
>>>>> To: "Peter Birtwhistle" <peter at birtwhi.demon.co.uk>
>>>>> Cc: mpml at yahoogroups.com
>>>>> Subject: Re: {MPML} 2007 VN84 incoming
>>>>>
>>>>>
>>>>> 2007 VN84 is significant in that it not only comes closer, it is
>>>>> much bigger, around 20 m in diameter, compared to 2004 FU162 only
>>>>> about 1/3 that
>>>>> size. Based on our recent population estimates, we expect an object
>>>>> the size of 2004 FU162 to pass within a couple Earth radii about
>>>>> once a year, and to actually impact (actually, blow up in the upper
>>>>> atmosphere) about once in five years, so the only thing unusual about
>>>>> 2004 FU162 is
>>>>> that we saw it as it passed by. 2007 VN84, on the other hand, is so
>>>>> large that we expect omething that big to come as close as 2 radii
>>>>> only about once in 20 years, so it is a remarkable event in itself,
>>>>> in addition to the fact that it was discovered and can be watched
>>>>> flying by. Congratulations to Richard
>>>>> Kowalski and the Catalina Sky Survey.
>>>>>
>>>>>
>>>>> Cheers,
>>>>>
>>>>>
>>>>> Alan
>>>>>
>>>>>
>>>>> P.S. I second his request and interest for a lightcurve, but it
>>>>> will be a real challeng on account of its rate of motion. Plenty
>>>>> bright enough, but really truckin'.
>>>>>
>>>>> At 03:57 PM 11/8/2007, Peter Birtwhistle wrote:
>>>>>
>>>>>> Take a look at MPEC 2007-V69 just announced...
>>>>>>
>>>>>>
>>>>>> http://www.cfa.harvard.edu/mpec/K07/K07V69.html
>>>>>>
>>>>>>
>>>>>> "The minimum distance from the geocenter is 0.000081 AU (1.89
>>>>>> Earth
>>>>>> radii) on Nov 13.844 UT"
>>>>>>
>>>>>> just beating the previous record close approach of 2004 FU162,
>>>>>> but this time we have 5 days lead time.
>>>>>>
>>>>>> Peter
>>>>>>
>>>>
>>>>>
>>>>> *******************************************************************
>>>>> Alan W. Harris
>>>>> Senior Research Scientist
>>>>> Space Science Institute
>>>>> 4603 Orange Knoll Ave. Phone: 818-790-8291
>>>>> La Canada, CA 91011-3364 email: awharris at SpaceScience.org
>>>>> *******************************************************************
>>>>>
>>>>>
>>>>>
>>>>> __._,_.___
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>>>>>
>>>>>
>>>>> Posts to this list or information found within may be freely used,
>>>>> with the stipulation that MPML and the originating author are cited
>>>>> as the source of the information.
>>>>
>>>>
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>
>
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Received on Fri 09 Nov 2007 05:17:30 PM PST