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Primary Direction Calculation Alexey Borealis

A complete guide for astrologers on how to calculate a primary direction in the Regiomontanus house system with math formulas.

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Antiscia is a point symmetrical to the planet's degree. But if the planet deviates from the ecliptic, it has two antisсia. Let's illustrate it.

Read more →Primary Direction Calculation Alexey Borealis

The main question in primary directions is which plane to use for aspects. It is not the equator or the ecliptic. Let's explore the right approach.

Read more →Primary Direction Calculation Alexey Borealis

Planets conjunct each other spatially when their mundane positions coincide. What is it, and how can it be calculated? Learn more from this article.

Read more →Primary Direction Calculation Alexey Borealis

What does the spatial connection of two planets look like in the Placidus house system? Get acquainted with the equations of mundane positions.

Read more →The cusps of houses in the Placidus system cannot be calculated analytically. Moreover, numerical methods do not work at extreme latitudes either.

Read more →Spherical Geometry Alexey Borealis

In calculating primary directions, it is necessary to know how the right ascension and declination of any degree of any zodiac sign are related.

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The basis of any horoscope is the Ascendant and Midheaven degrees. In this article, we will derive the formulas for calculating these degrees.

Read more →Spherical Geometry Alexey Borealis

We use the so-called sidereal time expressed in degrees when calculating primary directions. What are sidereal time and its connection with degrees?

Read more →Spherical Geometry Alexey Borealis

An essential concept in primary directions is the ascension difference. Learn how to calculate this value. This article is for prof. astrologers.

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