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ISS Sol transit


Ibbo
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Very nice Steve? :thumbsup: 

 

There must be a very narrow band across the earth where each particular ISS transit is visible. How narrow is this band as I can't be bothered to do the trigonometry? Would I be right in thinking that if you were only about 5 mile north or south of your position, the transit would not occur?

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Think these are the rough figures...


Since the ISS is orbiting about 403km above the earth and the sun is half a degree across, then...

 

tan(0.5)* 403 = 3.5km

 

So it looks like the band is a maximum of about 3.5 kilometres wide on the earth.

 

Did you calculate the time of transit from your location Steve?

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3 hours ago, Tweedledee said:

Think these are the rough figures...


Since the ISS is orbiting about 403km above the earth and the sun is half a degree across, then...

 

tan(0.5)* 403 = 3.5km

 

So it looks like the band is a maximum of about 3.5 kilometres wide on the earth.

 

Did you calculate the time of transit from your location Steve?

I use Calc Sky

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