Kepler's 2nd. Law

[Ángel Martin]

(03-12-2018 10:23 PM)twdeckard Wrote:  Greetings Ángel

Thank you for the kind words, remember, the program doesn't work yet. Candidly the best effort would be to scrap it and weld the TLE parser on the article that SlideRule posted.
.......

Even when working I only got as far as a correct ECF to ENU transformation. Everything else was wrong. Rather than simply "port" the BASIC I tried to go back to the actual coordinate transformations but it has gotten the better of me. I bought a "backup" HP41CX off of ebay and it had an Advantage module so I was looking for an excuse to do some matrix operations.

I will post something if I make any forward progress.

Thanks for the clarification, it'll stop me from chasing a red herring ;-)

BTW you're not alone having used the C64 as an "advanced" parallel development tool. Many moons ago I did the same for the synchronous machine swing equation... aah those good times!

My module was completed but then I decided to add formulas for the velocity increments for coaxial elliptical orbit transfers... and I'm now polishing a couple of rough edges.

Best,
ÁM