Coalescent Chart is the name for an astrological relationship analysis technique developed by Lawrence Grinnell.
This 20th century charting method is based on harmonics assigned to planets and works like a composite chart. Using a pair of natal maps the relative positions of celestial bodies, the Moon's Nodes and the Midheaven are compared.
Coalescent Chart's are useful for showing transit sensitivity that can reveal the dynamics between 2 individuals.
The harmonic is worked out by calculating the shortest arcs in both birth charts and dividing the angles into 360. Then the position of a planet is multiplied by the harmonic figure to begin assessing compatibility.
U prevodu ~ ova vrsta kompozitnog harmonika se koristi uz klasičan kompozitni čart i daje nam bolje uvide u sam odnos između dvoje ljudi.