Robin Williams’ tight Mars-Uranus conjunction exactly trined his ascendant – making his manic, unpredictable energy his most prominent characteristic. Mars was Out of Bounds in declination in his birth chart and nearly exactly parallel Uranus as well, reinforcing the role these two planets played in his life.

Mars and Uranus were also closely parallel intense and complicated Pluto, and so Williams actually had a triple parallel of Mars, Uranus and Pluto – with the Uranus-Pluto parallel the closest aspect in declination in his birth chart. He was very much an expression of these planets’ energies.

When we think of the characteristics of Uranus-Pluto that have been described in many recent astrology articles, they include upheavals, extreme conditions and sometimes radical or revolutionary change. Robin Williams’ career and personal life also reflected these characteristics, ranging from happy marriages, beautiful homes, loving family and an Academy Award, to lawsuits, divorce, box-office flops and substance abuse. While the public often saw the manic side of his personality, he was reported to suffer from deep depression.

The transiting Uranus-Pluto square of course played a role in Robin Williams’ death. Transiting Uranus squared Mars and Uranus in his birth chart earlier this year. And transiting Pluto was beginning a long station exactly opposed to both natal Mars and Uranus at the time of his death. True to these planets, he was unpredictable to the end.

Robin Williams was born on July 21, 1951 at 1:34 PM in Milwaukee, Wisconsin, according to his birth certificate and Astrodatabank.