Many people have experimented with using this technique, and Market Analyst 6 Astro Edition includes a function to produce variations of these planetary lines used by W. Gann never spoke or wrote in any detail about this technique, and the few references we have to it appear only on some of his most complex and messy charts, having to be deciphered and reverse engineered by the astute Gann analyst in order to determine what he was actually doing. We can see here that Gann is drawing trendlines and price level lines based upon planetary longitude on this famous chart, and these lines perfectly define the trend as well as the top in the Soybean market.

Green Line Jupiter 255° Horizontal – Dashed Blue = Jupiter 270° Horizontal.

Red Line = Mars Longitude – Blue Line = Jupiter Longitude.

Gann’s 1949 May Soybean Chart –Planetary Lines Colored I have reproduced it here with certain planetary lines highlighted, as defined by the color key below, showing exactly what each of these lines represents. Many analysts have commented on this chart and a number of them have cited Gann’s use of planetary longitude.

Unlike much of Gann’s work, this chart survived and is publicly available from numerous sources. Gann hand charted the May 1949 Soybean futures contract traded on the Chicago Board of Trade. Through the autumn and winter of 1948, W.

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