Tag Archives: Placidus

Space-Time and Astrological House Systems

Posted on December 28, 2022 by Anthony Louis

Around 300 BCE the Greek mathematician Euclid wrote his famous treatise on plane geometry. In it, he presented a small number of axioms about the geometry of a plane surface, from which he logically derived the theorems of his system. … Continue reading →

Tagged Alcabitius, Ashmand, Bruce Scofield, Campanus, Claudius Ptolemy, Einstein, Euclid, House system, House systems, John Wheeler, Placidus, Porphyry, Regiomontanus, space-time, spacetime | 2 Comments

Primary Directions: Placidus vs Regiomontanus

Posted on November 26, 2022 by Anthony Louis

Primary directions are one of the oldest and most venerated predictive techniques in astrology. Their origin dates back to Hellenistic times during which direction of the natal Ascendant through the terms (bounds) of the signs utilizing the ascensional times of … Continue reading →

Posted in Astrology | Tagged house division, intermediate points, Jabir ibn Aflah, Luis Ribeiro, Placidus, primary direction, Ptolemy, Regiiomontanus, Sixtus ab Hemminga, spherical geometry, temporal hour, time lord | Leave a comment

Embolismic Lunation Returns – example of a hellish year

Posted on June 21, 2021 by Anthony Louis

Recently I’ve been experimenting with Placidus’ method of progressing a birth chart via ’embolismic lunations’ (returns of the Sun and Moon to the same phase angle they held in the birth chart). In reading Martin Gansten’s recent book Annual Predictive … Continue reading →

Posted in Astrology | Tagged embolismic return, martial problems, Martin Gansten, Placidus | 1 Comment

Embolismic Lunations — Another Example (Alan Leo)

Posted on June 16, 2021 by Anthony Louis

The previous post discussed the idea of Placidus about using ’embolismic lunations’ (Sun-Moon phase angle returns) to progress the natal chart. Placidus mapped each such lunation onto a year of life. To test the method, I have been experimenting with … Continue reading →

Posted in Astrology | Tagged Alan Leo, Alan Leo's death, embolismic return, Placidus | 1 Comment

Embolismic Lunations

Posted on June 15, 2021 by Anthony Louis

Recently I was reading Cooper’s 1814 translation of Placidus’ Primum Mobile and going over the charts in the section Thirty Remarkable Nativities in which Placidus discusses the chart of King Charles V of Germany (23 Feb 1500 – 21 Sep … Continue reading →

Posted in Astrology | Tagged embolism, embolismic lunation, Heather O'Rourke, King George V of Germany, lunation, Placidus, Thirty Remarkable Nativities | 4 Comments

The Beheading of Jerome Cardan’s Son

Posted on April 1, 2020 by Anthony Louis

The Italian astrologer Jerome Cardan (1501 – 1576), aka Gerolamo Cardano, was one of the greatest mathematicians of the Renaissance. Because he was often short on cash, he developed probability theory to help him win at gambling. Cardan was born … Continue reading →

Posted in Astrology | Tagged beheading, Brandonia Seroni, caput algol, Giovanni Battista Cardano, Jerome Cardan, John Baptiste Cardan, John Cooper, Morinus, Naibod, Placidus, primary direction | 9 Comments

The Problem with Birth Time Rectification

Posted on March 31, 2020 by Anthony Louis

Any astrologer who has tried to rectify a birth chart knows what an arduous task it is. I know astrologers who have spent years trying to rectify their own charts, and nearly every time a new major event occurs in … Continue reading →

Posted in Astrology | Tagged Alexander Marr, Elizabeth Taylor, Frances McEvoy, Isaac Starkman, Jacqueline Kennedy, Juan Estadella, Mike Todd, Placidus, rectification, semi-arc primaries, topocentric primary direction, under the pole of the significator | Leave a comment

Ebenezer Sibly’s Use of Placidus Houses in the late 1700s

Posted on February 26, 2020 by Anthony Louis

The British astrologer Ebenezer Sibly (1751 – c. 1799) is perhaps most noted for the chart he published for the July 4th 1776 Independence Day of the United States of America. In discussing with Chris Brennan on The Astrology Podcast … Continue reading →

Posted in Astrology | Tagged chris brennan, Declaration of Independence, Ebenezer Sibly, Luke Broughton, Manoah Sibly, Placidus, placidus houses, The Astrology Podcast, USA Sibly chart | 1 Comment

Zadkiel’s Rejection of Regiomontanus Houses

Posted on February 22, 2020 by Anthony Louis

On Friday 21 February 2020 I had the great pleasure of chatting with Chris Brennan of The Astrology Podcast about a blog post I did regarding the switch from Regiomontanus to Placidus houses in England, starting at the end of … Continue reading →

Posted in Astrology | Tagged An Introduction to Astrology, Astrology Podcast, chris brennan, Christian Astrology, John Partridge, Placidus, R.C. Smith, Raphael, Regiomontanus, Table of Houses, william lilly, Zadkiel | 1 Comment

Reflections on Secondary Progressions

Posted on July 29, 2019 by Anthony Louis

Secondary progressions are one of the most commonly used predictive techniques in modern astrology. They are often attributed to the 17th century monk Placidus de Titus but their origin dates back at least as far as Vettius Valens in the … Continue reading →

Posted in Astrology | Tagged Argol, astro-seek.com, day for a year, John Cooper, Kepler, Maginus, Mark Riley, Martin Gansten, Placidus, primary direction, Primum Mobile, secondary progression, synodic month, Vettius Valens | 3 Comments