Get Precise Planetary Positions with Data Positions API
Calculate exact celestial coordinates for any date and location. Swiss Ephemeris precision from 6000 BCE to 6000 CE with arc-second accuracy.
Position Calculation Performance
Professional-grade accuracy and speed
Complete Planetary Position Solution
Everything needed for accurate celestial calculations
Swiss Ephemeris Precision
Historical Range
Complete Celestial Catalog
Multiple Coordinate Systems
Geographic Precision
Velocity Calculations
Flexible Output Formats
Optimized Performance
Validated Accuracy
Use Cases
What is Data Positions API? Complete Planetary Position Guide
Everything developers need for accurate celestial coordinate calculations
Data Positions API provides precise planetary positions for any date and location using Swiss Ephemeris calculations. Unlike basic astronomical APIs that offer limited accuracy or date ranges, our service delivers arc-second precision across 12,000 years of history. Perfect for astrology applications, astronomical software, research platforms, and any project requiring accurate celestial coordinates. With support for 57+ celestial bodies and multiple coordinate systems, you can build professional-grade applications with NASA-validated accuracy.
How do planetary position calculations work?
Our Data Positions API uses the Swiss Ephemeris SE 2.10 calculation engine with NASA JPL DE431 ephemeris data to compute precise celestial coordinates.
For any given date, time, and location, the system calculates the exact position of planets, asteroids, and other celestial bodies in various coordinate systems.
The calculations account for proper motion, precession, nutation, aberration, and gravitational perturbations to achieve arc-second accuracy.
Results include geocentric, heliocentric, and topocentric positions with automatic coordinate system transformations.
What makes our position calculations different?
While most astronomical APIs provide basic planetary positions with limited accuracy, our system offers professional-grade precision validated against NASA Horizons and USNO data.
We support an extensive 12,000-year historical range from 6000 BCE to 6000 CE, enabling research into ancient astronomical events and historical astrology.
The API includes 57+ celestial bodies including major planets, 47 asteroids, lunar nodes, and hypothetical points like Lilith and Priapus.
Multiple coordinate systems are supported with automatic transformations between equatorial, ecliptic, and galactic coordinates.
How to integrate planetary position data into your application?
Integration requires just a simple HTTP request to our RESTful API endpoint with date, time, and optional location parameters.
The API returns comprehensive position data in JSON format including coordinates, velocities, and angular measurements.
For bulk calculations, use our batch endpoint to process multiple dates efficiently.
The system automatically handles timezone conversions, calendar systems (Julian/Gregorian), and coordinate transformations.
SDKs are available for popular programming languages with built-in error handling and authentication.
Why is historical planetary position accuracy important?
Accurate historical positions are crucial for astrology research, archaeological dating, and historical astronomy studies.
Traditional ephemeris tables often contain interpolation errors or limited precision, especially for ancient dates.
Our Swiss Ephemeris implementation maintains consistent accuracy across the entire 12,000-year range, enabling reliable calculations for historical events, ancient birth charts, and astronomical phenomena.
This precision is essential for academic research, historical verification, and building trust in astrological applications.
Use Cases
Astrology Apps
Generate accurate natal charts, transit calculations, and progression analysis with precise planetary positions
Astronomical Software
Build planetarium applications, sky mapping tools, and educational astronomy platforms
Market Analysis
Correlate financial markets with planetary cycles using precise historical position data
Academic Research
Support scholarly research in astronomy, astrology, and historical studies with verified data
Technical Specifications
| Position Accuracy | 0.1 arcsecond precision using Swiss Ephemeris |
| Historical Range | 6000 BCE to 6000 CE (12,000 years total) |
| Celestial Bodies | 10 planets + 47 asteroids + lunar nodes + hypotheticals |
| Coordinate Systems | Geocentric, heliocentric, topocentric with transformations |
| Calendar Support | Julian and Gregorian calendars with automatic switching |
| Timezone Handling | All IANA timezones with historical DST changes |
| Output Formats | JSON, XML, CSV with configurable precision |
| Response Time | <500ms for single date, <2s for 100-date batch |
| Rate Limits | 10,000 calculations/hour on Professional plan |
| Coordinate Formats | Degrees/radians, decimal/sexagesimal, HMS/DMS |
| Ephemeris Source | Swiss Ephemeris SE 2.10 with NASA JPL DE431 data |
| Validation | Cross-checked against NASA Horizons and USNO data |
| Geographic Precision | WGS84 ellipsoid with elevation and refraction |
| Batch Processing | Up to 1000 calculations per batch request |
| Integration Time | Under 15 minutes with SDKs and examples |
Data Positions API vs Traditional Astronomical Tools
| Feature | AstroAPI | Others |
|---|---|---|
| Position Accuracy | 0.1 arcsecond | 1-5 arcminutes |
| Historical Range | 6000 BCE - 6000 CE | 1600 CE - 2200 CE |
| Celestial Bodies | 57+ bodies | 10-15 planets only |
| Coordinate Systems | 6 systems with transforms | 1-2 basic systems |
| Response Time | <500ms | 2-10 seconds |
| Batch Processing | 1000 dates/request | Single date only |
| API Integration | RESTful with SDKs | Manual calculation |
| Calendar Support | Julian + Gregorian | Gregorian only |
| Timezone Handling | Automatic IANA | Manual UTC offset |
| Validation | NASA cross-checked | Unverified |
| Price | $37/month | $200+ software |
| Updates | Continuous | Manual upgrades |
Related Astronomical and Astrology APIs
Data Now API
Real-time planetary positions and aspects for current moment
Natal Chart API
Complete birth chart calculations using position data
Transit API
Calculate planetary transits using precise positions
Ephemeris API
Historical ephemeris tables and position lookup
API Documentation
Complete technical reference for position calculations
Frequently Asked Questions
Simple, Transparent Pricing
Start free, scale as you grow. No hidden fees, no surprises.
Starter
For small apps and personal projects
- All basic endpoints
- 12 house systems
- Email support
Professional
For growing astrology applications
- All enhanced endpoints
- 23 house systems
- AI interpretations
- Priority support
Business
For high-volume applications
- ALL endpoints
- White-label ready
- Phone support
All plans include comprehensive documentation and SDKs
Questions? Talk to our team