---
title: "Ephemeris Range"
method: POST
path: "/ephemeris"
tags: ["Core"]
---

# Ephemeris Range

`POST /ephemeris`

Return planet positions for a date range with configurable step (min 0.01 days). Max range: 1 year for sub-day steps, 5 years otherwise. Optionally filter by planetIds.

## Request body

- Ephemeris
  - `startDate` string, required
  - `endDate` string, required
  - `stepDays` number, nullable
  - `planetIds` number[]

## Response `200`

Successful calculation

- object
  - `ok` boolean
  - `data` object
    - `ephemeris` object[], nullable
      - `jd` number, nullable
      - `date` string, nullable
      - `positions` object[], nullable
        - `planetId` number, nullable
        - `longitude` number, nullable
        - `latitude` number, nullable
        - `speed` number, nullable

## Other responses

- `400` — Validation error
- `401` — Missing or invalid API key

---

[API](https://skmtc.net/astroway/apis/astroway-calculation-api.md) · [All operations](https://skmtc.net/astroway/apis/astroway-calculation-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/astroway/astroway-calculation-api/revisions/529d7d36d7d6/schema)