Word origin · etymology
Eponym.
Named for astrologer Ronald Davison. The name identifies his relationship-chart approach rather than a classical-language compound.
Mona Riegger: Beyond Midlife, Appendix on astrological techniques ↗
How we know · epistemology
Constructed reference chart
An intermediate time and place allow a real-sky calculation for a constructed reference event. That event is not the couple’s birth, and geographic midpoint choices can change the result.
Connected concepts
Terms used in this explanation
Sources & provenance
Use the citations beside each section to distinguish a calculation convention, a historical teaching and an editorial example.