What Are the Best Free Earth-Sun Distance Calculators Online?

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Several users recommend online calculators for determining the Earth-Sun distance, particularly for processing Landsat imagery. One suggested resource is the Fourmilab website, which offers a free calculator for solar computations. Participants in the discussion emphasize the importance of accuracy in these calculations for remote sensing applications. Users are encouraged to explore various websites to find the best fit for their needs. The conversation highlights the availability of free tools for scientific computations related to Earth and solar distances.
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Hi,

I'm in need of an earth-sun distance on-line calculator for download (freeware) to process computations for Landsat imagery. Can anyone recommend any web sites to hit?

Thanks,
ttrsbug
 
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