Natal astrology chart calculation in pure Ruby: apparent planetary longitudes (VSOP87D, ELP-2000/82B moon, Meeus Pluto), Placidus houses, aspects and synastry. No C extension, no external data files. Implemented from public formulas (Meeus, Astronomical Algorithms 2nd ed.).
Required Ruby Version
>= 3.0
Authors
Huang Yudi
