[Two_Sheds]

I already perused that forum and noted that 'surface-to-orbit' calculations have been admitted as being 'earth-based' only. The orbital position of the sun is irrelevant to these calculations, as I said.

Link to this statement please?

[GourmetDan]

"The equations & physics used by NASA to launch satellites & interplanetary probes are identical to the equations derived from a geocentric universe. All are planned & executed on the basis of a FIXED EARTH! They do not use the Copernican System! You can confirm this with them & the National Oceanic & Atmospheric Administration in Washington DC!"

"True, but that doesn't make geocentric coordinate systems more valid than heliocentric, or even joviocentric coordinate systems. It's just more convenient, in much the same way it's convenient to think of the night sky as Earth-centered to simplify stargazing."

http://www.bautforum.com/archive/index.php/t-2529.html

The first paragraph is correct about satellites but not always correct wrt interplanetary probes. Even so, it is often correct and the only point of difference is which 'coordinate system' is chosen, not the calculations themselves. We were discussing earth orbits, not interplanetary probes, so the statement is correct for our purposes.

Don't know if you can understand that, but there it is.