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Sun Anomalies? UFOs? Whats your take on this?

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14 years 2 months ago #83568 by dave_lillis
Replied by dave_lillis on topic Re:Sun Anomalies? UFOs? Whats your take on this?
my money is on an earth satellite, Mercury would be a similar-ish size on the disk of the sun.
As for the wings (I presume you mean solar panels), some satellites have the solar panels on its walls,

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
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14 years 2 months ago #83569 by Frank Ryan
Replied by Frank Ryan on topic Re:Sun Anomalies? UFOs? Whats your take on this?
Looks like a tumbing satellite to me.

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14 years 2 months ago #83577 by mjc
I timed the transit and found the duration to be 29s.
The Sun's angular diameter is about 30"

I used a CD to draw a circle and I played and paused the video and plotted a course.

Length of transit 10.7cm
Equatorial diameter of disc = 12cm
This was drawn parallel to line of transit.

Angular speed was then calculated to be 0.92 arcsecs per second.
A sidereal second is 86164/86400 = 0.9973 seconds of wallclock time.

Rough enough calcs but my money is on it being a geostationary satellite.

Mark

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14 years 2 months ago #83579 by dmcdona
At first glance, I thought the video was showing a massive white circle moving across the sun :blush:

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14 years 2 months ago #83580 by mjc
Thinking about my post more.

For the object to be geostationary - and cross the disc of the Sun - the image capture would have had to be at or near one of the equinoxes (me thinks). I have no information on date of capture so can't progress that line of thought.

I think it's time for me to climb out of the rabbit hole...

Mark

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