Re: [APML] Object Identification Challange

["Glenn Ray" <glennlray@mail.ev1.net>]

Sure looks like something moving into shadow, as with a satellite.

I looked at heavens-above for your latitude/longitude and time and 
noticed this:

http://www.heavens-above.com/PassDetails.asp?
Size=600&SatID=25017&lat=47.16667&lng=-
120.85&alt=0&loc=Cle+Elum&TZ=PST&Date=38410.1750534269

It's a predicted pass for the Lacrosse 3.  While it was moving far 
to quickly to be the object she photographed, it does suggest that 
the object also entered Earth's shadow near the same time.  

Perhaps she picked up an orbiting object nearer to geosynchronous 
orbit...

Glenn "first person with the wrong answer" Ray



---------- Original Message ----------------------------------
From: "Jay E. Potts" <jpotts@americanfocus.com>
Reply-To: Discussion of Film Astrophotography <astro-
photo@seds.org>
Date: Mon, 14 Mar 2005 12:12:10 -0800

>A friend, who is just starting to learn the basics of 
astrophotography, presented three
>images last week at one of our Astrophoto SIG meetings. The 
images revealed a moving
>object in the constellation Orion during the evening of Feb 26th 
2005. Approx. Lat 47D-10M
>N, 120D-51M W (Cle Elum, WA).
>
>She was taking some quick piggy back shots using a 50mm lens, but 
was using an alt-azm
>mount so exposure length was limited and field rotation is 
significant.
>
>In any event, she captured an object moving roughly from the 
direction of the sun past the
>earth at a rate of speed that suggests perhaps it was a near 
earth asteroid.
>
>The link below shows a greatly cropped three frame animation with 
exposure lengths between
>2 and 3 minutes. The object clearly is moving fast, and changing 
in brightness quickly.
>
>Because resolution is poor, I've had no luck getting an imagelink 
in TheSky to work, and I
>don't think PinPoint would have a chance at extracting decent 
astrometric measurements. A
>quick search in TheSky does not show any minor planets in the 
area that are remotely this
>bright. (Most are between 18-20th mag).
>
>So, I post this to see if anyone has an idea how to determine if 
this is a known object, a
>new object, or can suggest a way to get at least a rough 
astrometric measurement.
>
>Sort'of an interesting challenge. <g>
>
>http://www.whirlpoolgalaxy.com/temp/maxine_nagel_unknown123_labels
.gif
>
>~ Jay E. Potts
>http://www.whirlpoolgalaxy.com (Astrophotography)
>http://www.americanfocus.com (Landscapes & Wildlife)
>
>
>
>
>
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>http://seds.org/mailman/listinfo/astro-photo
>
 

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