Free satellite data for everyone

Access TLE, OMM, and satellite catalog data through a fast, modern REST API. Community-funded and open to all.

Get Your Free API Key Read the Docs

Current GP Data

Latest general perturbations data for 28,000+ tracked objects, updated every 8 hours.

Historical Archive

Years of GP history in Parquet format. Query by time range, nearest epoch, or adjacent pairs.

Satellite Catalog

Full SATCAT metadata: launch info, orbit class, object type, and status for every tracked object.

Multiple Formats

JSON, CSV, TLE, and XML output. Content negotiation via Accept header or format parameter.

Free Tier

30,000 requests/month at 10 req/s. No credit card required. Upgrade if you need more.

Community Funded

Supported by the space community through donations. No ads, no tracking, no vendor lock-in.

Quick Start

Get your API key and make your first request in under a minute.

curl -H "X-Api-Key: YOUR_KEY" https://orbit.davidhsu.cc/api/v1/gp/25544