[meteorite-list] Fw: Comet 17P (Holmes) Visible Event !

From: lebofsky at lpl.arizona.edu <lebofsky_at_meteoritecentral.com>
Date: Thu, 25 Oct 2007 09:31:34 -0700 (MST)
Message-ID: <4166.71.226.60.25.1193329894.squirrel_at_timber.lpl.arizona.edu>

Hi Again:

If one were on Mars (hold your breath and bring a warm jacket), Holmes
would be 1.17 AU away (vs. 1.63 AU) and 0.7 magnitudes (2 times) brighter
than what we see. And there would be less intereference from moonlight!

Larry

On Wed, October 24, 2007 2:20 pm, mexicodoug wrote:
> Hi Again Listees,
>
>
> With regards to Comet 17P (Holmes) estimated at under 3.5 Km in diameter,
> and being twice as far from the Earth as the planet Mars:
>
> How could it be one sixteenth as bright as Mars and an easy object in the
> night sky with an almost Full Moon? No doubt it has a lot of ice
> crystals or something white and reflective. A rought thought says that in
> absolute terms it is one fourth the brightness of Mars if they were at the
> same distance from us! This is because we perceive only 1/4 of the light
> intensity due to the doubling of distance,
>
> It is it is hard to avoid the temptation of thinking this tiny body is of
> relatively pristine material now confined to the Asteroid belt, but
> before, from the Outer Solar System, and may, for once, given Jupiter his
> dues, have been affected by a relatively close pass to the inner Solar
> System, with
> Venus, Earth and Mars all aligned this month to exert their gravitational
> attraction together. Not to mention all of the scientists and collectors
> who would will material to Earth.
>
> The comet is over 40% further away from Earth as it is from Mars at the
> moment, so I hope the guys with their hands on the controls of the Mars
> rovers take a break and look up for us at MidSolnight, and that the Deep
> Impact Crew is already into emergency overdrive to make the comparison
> they will be held accountable for, now that there is a second chance
> :-)...
>
>
> Best Skies and great health,
> Doug
>
>
>
>
>
> ----- Original Message -----
> From: "mexicodoug" <mexicodoug at aol.com>
> To: <meteorite-list at meteoritecentral.com>
> Sent: Wednesday, October 24, 2007 2:52 PM
> Subject: Re: [meteorite-list] Fw: Comet 17P (Holmes) Visible Event !
>
>
>
>> Hello List,
>>
>>
>> This bodes great (in a Titian-Bodean sense) for tonight in Europe and
>> North America. I put a finder chart up for this evening at:
>>
>>
>> www.diogenite.com/17P.jpg
>>
>> This is the show in Europe right now...and should print well to an A4
>> or letter sized piece of paper.
>>
>> A new "star" was just born for those familiar with the neighborhood of
>> Algol and Capella. The best time will be as the moon gets lower just
>> before the glow of Sunrise, and the comet will be half way to the Zenith
>> due NW (and the chart will still be fine upside down in the Northern
>> hemisphere). Mars will brightly shine 16 times brighter overhead in
>> Gemini. Nearby is Capella, the 6th largest star and 6th brightest
>> starry object in the sky (Called Colca by the Aymara for a cache of food
>> - which
>> ancient Greeks believed was the horn of plenty "Cornucopia", and the
>> name of the famous Valley/Canyon of Condors by Arequipa, Peru) is
>> nearby.
>>
>> Moon or not, it's so bright you can still get a fine view after Sunset
>> if you don't mind the interference from that big Lunar up there.
>> Tonight's
>> the night!! The location on the finder chart is similar for the next
>> week (heading toward Mirphak, just a tad), since the comet is very far
>> away from Earth with respect to noticable relative motion.
>>
>> Best wishes for a long night,
>> Doug
>>
>>
>>
>>
>> ----- Original Message -----
>> From: "K. Ohtsuka" <ohtsuka at jb3.so-net.ne.jp>
>> To: "MeteoriteList" <meteorite-list at meteoritecentral.com>
>> Sent: Wednesday, October 24, 2007 12:32 PM
>> Subject: Re: [meteorite-list] Fw: Comet 17P (Holmes) Visible Event !
>>
>>
>>
>>> Hello all,
>>>
>>>
>>> I have just looked at the superoutburst of 17P/Holmes,
>>> as follows:
>>>
>>> 2007 Oct. 24.72 UT: m1=2.8, Dia.=, DC=9, by NE
>>>
>>>
>>> Katsu. OHTSUKA
>>> Tokyo, JAPAN
>>>
>>>
>>> ----- Original Message -----
>>> From: "giovannisostero" <GiovanniSostero at libero.it>
>>> To: "mexicodoug" <mexicodoug at aol.com>
>>> Cc: "meteorite-list" <meteorite-list at meteoritecentral.com>
>>> Sent: Thursday, October 25, 2007 1:22 AM
>>> Subject: Re: [meteorite-list] Fw: Comet 17P (Holmes) Visible Event !
>>>
>>>
>>>
>>>> Hi all,
>>>> this is our BVR shot of 17P/Holmes in outburst (brightest object in
>>>> the
>>> field center):
>>>>
>>>> http://tinyurl.com/2mxrmx
>>>>
>>>>
>>>> Cheers,
>>>> Giovanni and Ernesto
>>>>
>>>>
>>>>
>>>> ______________________________________________
>>>> Meteorite-list mailing list
>>>> Meteorite-list at meteoritecentral.com
>>>> http://six.pairlist.net/mailman/listinfo/meteorite-list
>>>>
>>>
>>> ______________________________________________
>>> Meteorite-list mailing list
>>> Meteorite-list at meteoritecentral.com
>>> http://six.pairlist.net/mailman/listinfo/meteorite-list
>>>
>>>
>>
>> ______________________________________________
>> Meteorite-list mailing list
>> Meteorite-list at meteoritecentral.com
>> http://six.pairlist.net/mailman/listinfo/meteorite-list
>>
>>
>
> ______________________________________________
> Meteorite-list mailing list
> Meteorite-list at meteoritecentral.com
> http://six.pairlist.net/mailman/listinfo/meteorite-list
>
>
Received on Thu 25 Oct 2007 12:31:34 PM PDT


Help support this free mailing list:



StumbleUpon
del.icio.us
reddit
Yahoo MyWeb