Ephemeris computational
space system

A unified platform delivering high-precision astronomical data and APIs ephemerides, star catalogs, time standards, and trajectory propagation for science, education, culture, and innovation worldwide.

Core services

Comprehensive astronomical data services designed for scientific research, education, and technical applications worldwide.

Ephemeris-as-a-Service

Real-time planetary positions, velocities, and celestial mechanics data.

  • Planetary trajectories
  • Moon phases
  • Eclipses
  • Occultations

Star Catalog Service

Cross-matched star queries from major astronomical databases

  • Gaia/Hipparcos/Tycho data
  • Proper motions
  • Variable start tracking
  • Cross-referencing

Time & Frames Service

Precise time conversions and coordinate system transformations.

  • UTC-TT-TDB conversions
  • Leap second management
  • Precession/nutation
  • Aberration transforms

Trajectory / Orbit Propagation

Advanced orbital mechanics for asteroids, comets, and spacecraft.

  • MPCORB integration
  • Kepler/DE models
  • Spacecraft tracking
  • Orbit prediction

Validation & Gold Standard

Reproducible comparisons against JPL Horizons reference data.

  • JPL Horizons comparison
  • Data validation
  • Quality assurance
  • Reproducible results

Why Choose ECS?

Built for precision, designed for scale. Trusted by the global astronomical community.

High Performance

Optimized algorithms deliver results in milliseconds with minimal latency.

Data Integrity

Rigorous validation ensures accuracy and reliability.

Global Access

24/7 availability with worldwide CDN distribution.

Comprehensive Data

Integrated ephemerides, catalogs and reference frames.

Real-time Updates

Live data feeds for dynamic astronomical events.

Educational Support

Resources and tutorials for learning space science.

Scientific Community

Trusted by researchers and institutions globally.

Advanced Models

State-of-the-art algorithms and computational models.

Cultural Applications

Supporting cultural astronomy and heritage projects.

API Documentation

RESTful APIs with comprehensive documentation, code examples, and interactive testing.

Planetary Ephemeris GET

Get real-time planetary positions and velocities

Request

GET /GET "https://api.ecs.space/v1/ephemeris/planet?name=mars&date=2024-01-01T00:00:00Z" -H "API-Key: YOUR_API_KEY"

Response

{
  "body": "mars",
  "time": "2024-01-01T00:00:00Z",
  "reference": "SunV3",
  "position": {
    "X": -2.27948,
    "Y": -0.93391,
    "Z": 0.18946
  },
  "velocity": {
    "X": -1.61,
    "Y": -25.31,
    "Z": -0.33
  },
  "distance": 2.13448,
  "light_time": 740.3
}

Star Data Query GET

Access comprehensive star catalog data

Request

GET "https://api.ecs.space/v1/stars?hipparcos_id=1234&epoch=J2000.0" -H "API-Key: YOUR_API_KEY"

Response

{
  "hipparcos_id": 1234,
  "ra": "00:15:23.45",
  "dec": "+45:32:11.2",
  "magnitude": 4.56,
  "proper_motion": {
    "ra": 12.34,
    "dec": -5.67
  },
  "parallax": 0.0234,
  "spectral_type": "G2V"
}

Time Conversion GET

Convert between different time standards

Request

GET "https://api.ecs.space/v1/time/convert?from=UTC&to=TT&time=2024-01-01T12:00:00Z" -H "API-Key: YOUR_API_KEY"

Response

{
  "from": "UTC",
  "to": "TT",
  "input_time": "2024-01-01T12:00:00Z",
  "output_time": "2024-01-01T12:01:09.184Z",
  "delta": 69.184,
  "leap_seconds": 37
}