I have a set of dates, position angles ($\theta$) and angular separations ($\rho$) for visual binary star. For example:1994.3132  57.0    0.0971996.1783  73.4    0.0512006.1938 182.0    0.1262009.2597 192.9    0.152etc.What are algorithms to calculate orbital elements and to plot the orbit of the binary star?Are there available codes (or programs) for this calculations? Python is preferable )
How to plot orbit of binary star and calculate its orbital elements?
python;numerical analysis