Parto asked:
In other words, is a partile Moon aspect with any planet relevant in a SSR?
Indeed! Parto, Jim writes from his book “Interpreting Solar Returns”:
This, then, isolates the Moon as the most crucial agent in a Solar Return (SSR), after the angles. Lunar aspects to natal and solar planets can never be treated lightly, even when rather wide in orb. So remarkable is this single factor that, if lunar aspects are nearly exact while foreground planets are not exceptionally close to the angles, the solar Moon can be considered the primary theme-setter of the chart for the year ahead, bar none.
Parto, also, it is very important to track your secondary progressed (sp) solar Moon throughout the solar year, always checking to see if sp solar moon forms partile 0, 90,180, aspects to natal or solar planes, particularly the 0 & 180. Many times these partile sp solar Moon aspects to natal or solar planets will time very important incidents happening in a solar year flavored by the planet the partile sp solar Moon aspects. A secondary progressed solar Moon moves app 1.1 degree a month. I have found a quick way to check for these sp solar Moon aspects is to quickly add 13 degrees to the solar Moon while looking at your SSR Chart, scanning with your eyes to see if any
0,90,180 partile aspects form to any solar planets during the solar year. Then use a bi-wheel with your Natal also checking to see if any partile sp solar Moon aspects form with your Natal Planets during the solar year. If you can still find Jim's book (used) "Interpreting Solar Returns," I highly recommend the study of his book because as Jim writes:
The Solar Return is the basis of the most powerful forecasting system presently known to astrological technology, and is capable of specifying events with great clarity and acuity.
Using a SSR combined with certain Solar Arcs, imo are indeed the two best forecasting tools in astrology.