Category "Spherical Geometry" Page 1/1


BlogMathematics of the Celestial Sphere ❘ Spherical Geometry

Equatian of the Ecliptic
Equatian of the Ecliptic

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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Equation for ASC & MC
Equation for ASC & MC

Spherical Geometry Alexey Borealis

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

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What are the Sidereal Time and RAMC?
What are the Sidereal Time and RAMC?

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?

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Ascension Difference Equation
Ascension Difference Equation

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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How to Convert Ecliptical coordinates to Equatorial And Vice Versa?
How to Convert Ecliptical coordinates to Equatorial And Vice Versa?

Spherical Geometry Alexey Borealis

Astrologers must convert zodiacal coordinates to ecliptic coordinates and vice versa when calculating primary directions. Let's derive these formulas.

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Spherical Triangles Equations
Spherical Triangles Equations

Spherical Geometry Alexey Borealis

Spherical triangle equations are the foundation of mathematical work for an astrologer-forecaster. We will derive these functional equations here.

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rotation matrices
How to Convert one Set of Spherical Coordinates to Another?

Spherical Geometry Alexey Borealis

These equations express the coordinates of the planet in various spherical coordinates and provide a basis for calculating primary directions.

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Trigonometry for astrologers
Fundamentals of Trigonometry for Practicing Astrologers

Spherical Geometry Alexey Borealis

These basic formulas are needed to understand the subsequent calculations of the primary directorates. Read it if you use this method.

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