# openephemeris-com Ephemeris API

**Canonical:** https://apis.io/apis/openephemeris-com/openephemeris-com-ephemeris-api/  
**Provider:** openephemeris-com — https://apis.io/providers/openephemeris-com/  
**Base URL:** https://api.openephemeris.com  
**Documentation:** https://openephemeris.com/docs

openephemeris-com Ephemeris API is one of 20 APIs that [openephemeris-com](https://apis.io/providers/openephemeris-com/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 6 JSON Schema definitions. Tagged areas include ephemeris. The published artifact set on APIs.io includes an OpenAPI specification and 6 JSON Schemas.

Discover the foundation of any chart. Get natal positions, houses, lots, core aspects, and fixed stars. Calculated with NASA-grade precision (JPL DE440, 1550–2650 CE). **1 unit per request** (the prenatal-lunation search is 5 units).

## Operations (23)

| Method | Path | Summary |
|---|---|---|
| POST | `/ephemeris/angles-points` | Calculate angles + points (granular) |
| POST | `/ephemeris/antiscia` | Calculate antiscia and contra-antiscia |
| POST | `/ephemeris/aspect-check` | Check aspects between two longitudes |
| POST | `/ephemeris/declinations` | Out-of-Bounds Declination Analysis |
| POST | `/ephemeris/dignities` | Calculate essential dignities (granular) |
| POST | `/ephemeris/dispositor-tree` | Build dispositor tree from planetary placements |
| POST | `/ephemeris/draconic` | Calculate Draconic Chart |
| POST | `/ephemeris/fixed-stars` | Fixed star position calculations |
| POST | `/ephemeris/geodetic` | Geodetic Chart |
| POST | `/ephemeris/harmonics` | Harmonic Chart Analysis |
| POST | `/ephemeris/hermetic-lots` | Calculate Hermetic lots for datetime and location |
| POST | `/ephemeris/house-cusps` | Calculate house cusps (granular) |
| POST | `/ephemeris/lunar-phase` | Calculate lunar phase for datetime |
| POST | `/ephemeris/midpoints` | Calculate midpoints for datetime |
| GET | `/ephemeris/moon/crescent-visibility` | Crescent Moon Visibility |
| POST | `/ephemeris/natal-chart` | Enhanced Natal Chart Calculation |
| POST | `/ephemeris/natal/batch` | Batch natal calculations |
| POST | `/ephemeris/planet-position` | Get single planet position |
| POST | `/ephemeris/prenatal-lunation` | Calculate Prenatal Lunation |
| POST | `/ephemeris/relocation` | Calculate relocation chart |
| POST | `/ephemeris/retrograde-status` | Check planet retrograde status |
| GET | `/ephemeris/sky-tonight` | Sky Tonight |
| POST | `/ephemeris/time-sensitivity` | Birth-Time Sensitivity |

## Machine-readable artifacts (7)

- **OpenAPI** — https://artifacts.apis.io/openephemeris-com/openapi/openephemeris-com-ephemeris-api-openapi.yml
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-acgccgrequest-payload-schema.json
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-acgrequest-payload-schema.json
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-vedic-chart-request-schema.json
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-acglocal-space-request-payload-schema.json

## Other openephemeris-com APIs (12)

- [openephemeris-com ACG API](https://apis.io/apis/openephemeris-com/openephemeris-com-acg-api/)
- [openephemeris-com Agricultural API](https://apis.io/apis/openephemeris-com/openephemeris-com-agricultural-api/)
- [openephemeris-com API Metadata API](https://apis.io/apis/openephemeris-com/openephemeris-com-api-metadata-api/)
- [openephemeris-com Calendar API](https://apis.io/apis/openephemeris-com/openephemeris-com-calendar-api/)
- [openephemeris-com Catalogs API](https://apis.io/apis/openephemeris-com/openephemeris-com-catalogs-api/)
- [openephemeris-com Chinese API](https://apis.io/apis/openephemeris-com/openephemeris-com-chinese-api/)
- [openephemeris-com Comparative API](https://apis.io/apis/openephemeris-com/openephemeris-com-comparative-api/)
- [openephemeris-com Eclipse API](https://apis.io/apis/openephemeris-com/openephemeris-com-eclipse-api/)
- [openephemeris-com Electional API](https://apis.io/apis/openephemeris-com/openephemeris-com-electional-api/)
- [openephemeris-com Health API](https://apis.io/apis/openephemeris-com/openephemeris-com-health-api/)
- [openephemeris-com Human Design API](https://apis.io/apis/openephemeris-com/openephemeris-com-human-design-api/)
- [openephemeris-com Location Timezone API](https://apis.io/apis/openephemeris-com/openephemeris-com-location-timezone-api/)

## Tags

ephemeris

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/openephemeris-com/openephemeris-com-ephemeris-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/openephemeris-com/.