Technical Foundations

Astral Chat – Technical Foundations of Our Astrological Calculations

Astral Chat delivers professional-grade astrological insights powered by one of the most precise calculation systems available today. Below you’ll find a detailed overview of the methods, standards, and astronomical data sources that ensure accuracy and reliability.

Core Technical Setup

• Coordinate System: Geocentric (Earth-centered perspective)

• Zodiac: Tropical (Western zodiac system)

• House System: Placidus

• Moon Node: True Node

• Ephemeris Data: Swiss Ephemeris (internationally recognized, highest precision)

Orb Standards (Allowable Margins)

• Transits: 1° orb for all planets and major aspects

• Natal Charts: 8° orb for major aspects

• Synastry (Compatibility): 5° orb for major aspects

Aspects Considered

Astral Chat calculates the five classical “major aspects”:

• Conjunction (0°)

• Sextile (60°)

• Square (90°)

• Trine (120°)

• Opposition (180°)

Celestial Bodies Included

• Classical Planets: Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn

• Modern Planets: Uranus, Neptune, Pluto

• Lunar Nodes: North Node, South Node (from True Node)

• Asteroid: Chiron

• Chart Angles: Ascendant (ASC) and Midheaven (MC)

House Calculation

• System: Placidus

• Basis: Sidereal time

• Accuracy: 0.01° for house cusps

• Interpretation: Classical planetary rulers applied

Precision Standards

• Planetary Positions: 0.01° accuracy

• House Cusps: 0.01° accuracy

• Aspect Timing: Exact to the minute

• Location Data: Coordinates calculated to 4 decimal places (~±11 m)

Additional Features

• Declination Aspects: Parallel/contraparallel tracked with 2° orb

• Retrograde Detection: Automatic identification of planetary reversal periods

• Forecast Range: Up to 365 days for slower planets

• Multi-timezone Support: Natal and transit charts calculated across different time zones

Why This Matters for You

By combining Swiss Ephemeris precision with advanced algorithms, Astral Chat ensures that your natal charts, transits, and compatibility readings are calculated at the same standard used by professional astrologers worldwide. This means every interpretation you receive is based on data that is:

• Accurate down to fractions of a degree

• Time-zone and location aware

• Consistent across all modules (daily, natal, compatibility, forecasting)

Astral Chat is not just an app—it’s a professional-grade astrological calculation platform in your pocket.