parallax of geocettic orbits

Glen Deen Oct 7 12:55 PM

My background is electrical engineering, and I am “self-taught” in
celestial mechanics. This means my ignorance often become a barrier
for me.

 

I had been using Meeus’s parallax formulas, and I recently realized
that they are for heliocentric orbits. I am now working with geocentric
and lunicentric orbits, and Meeus’s formulas don’t work for them.

 

I found this paper that I suspect might help me derive some geocentric
orbit parallax formulas.

http://castor2.ca/08_Papers/Parallax.pdf

 

Are any of you familiar with that paper? Better yet, can you tell me
how you compute geocentric orbit parallaxes?

As a test, I want to calculate some simulated observations of the
International Space Station from different observatories and see if
find_orb gives me the same orbital elements for those observations.

 

Would that be a definitive test of the formulas?

 

-Glen