From: Terrence Redding <tredding@mac.com>

Date: July 24, 2009 4:45:34 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Re: impact on Jupiter...

Milton, I did a quick search of my messages - because I am sure I read the information in a message - but did not find it.  Then I did a search on the Internet and found this reference http://tinyurl.com/lquz7j

But the message I am remembering said the object that struck Jupiter was on the order of 1 to 2 kilometers in size and to faint to be seen from earth.  If I come across the reference I will send it along.

Terry - W6LMJ

Terrence R. Redding, Ph.D. RTN

http://olt.net/learningstyle/Site_2/Learning_Style_Research.html

How do amateur astronomers learn?

On Jul 24, 2009, at 6:24 PM, Milton Aupperle wrote:

Hi Terrence;

On 24-Jul-09, at 3:49 PM, Terrence Redding wrote:

Ah, else where I learned that the object that struck Jupiter was to small to be imaged from earth.

Can you quote the source for this?

I've never heard anyone say what the impactor was yet or what size it was, except this guess by Nasa as to it being "several football fields in size":

http://news.cnet.com/8301-19514_3-10295368-239.html

http://www.space.com/scienceastronomy/090724-hubble-jupiter-spot.html

Shoemaker Levy 9 was estimated to be 1 to 3 kilometers in size for the "core" fragments..

http://www.isc.tamu.edu/~astro/sl9/cometfaq2.html

comparable images are at:

ftp://seds.lpl.arizona.edu/pub/astro/SL9/images/recent/ALL/LPM_FGH.gif

http://www.isc.tamu.edu/~astro/sl9/cometfaq2.html

Not trying to be argumentative, but I still find it funny that it was an amateur found it and not any government funded groups with vastly greater resources.

Have a great weekend..

Milton J. Aupperle