---
title: "Propagate"
method: GET
path: "/api/v1/space-weather/leo-drag/propagate/{norad_id}"
tags: ["LeoDrag"]
---

# Propagate

`GET /api/v1/space-weather/leo-drag/propagate/{norad_id}`

## Request

- Base URL: `https://www.deepmapai.com`
- URL: `https://www.deepmapai.com/api/v1/space-weather/leo-drag/propagate/{norad_id}`
- Auth: none declared

Propagate a cached TLE to the current epoch via SGP4.

Foundation primitive for conjunction assessment: returns position
(TEME frame, km) and velocity (km/s) for a single object.
Conjunction-window detection (pairwise close-approach between
tracked objects) is scoped for the next-session build.

## Path parameters

- `norad_id` integer, required

## Response `200`

Successful Response

- object

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/deepmapai/apis/deepmap-ai.md) · [All operations](https://skmtc.dev/deepmapai/apis/deepmap-ai/llms.txt) · [OpenAPI document](https://skmtc.dev/deepmapai/apis/deepmap-ai/revisions/dab995d977d0?raw)