0, Download help: Calculation (Beregning)

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Arc distance (Bueafstand)

Equatorial

https://sites.google.com/site/kallast06/home/0-calculation-beregning/bueafstand.063.sdc

https://sites.google.com/site/kallast06/home/0-calculation-beregning/bueafstand.065.sdc (Galactic proper motion)

Den regner ikke præcist, men nogenlunde godt nok!