# OpenExoplanetCatalogue/open_exoplanet_catalogue

The main data repository for the Open Exoplanet Catalogue

Repository: https://github.com/OpenExoplanetCatalogue/open_exoplanet_catalogue
Canonical: https://ross.abutalabs.com/products/open_exoplanet_catalogue
Homepage: http://openexoplanetcatalogue.com
Language: Python
License Family: other
Last push: 2026-09-02T07:01:57+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 35, longevity 100
- inputs: {"age_days": 5713, "days_push": 0, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1124, forks 223 (observed 2026-09-03T02:15:06.967613+00:00)

## What it is
An open, community-maintained database of all discovered extrasolar planets, stored as human-readable XML files in a git repository. New planets are typically added within 24 hours of announcement, and data can be queried easily from Python.

## Use cases
- get a list of all discovered exoplanets with mass and radius
- find circumbinary planets or planets in binary star systems
- download exoplanet data for scientific research or a paper
- query planetary system distances and planet counts with Python
- build plots or histograms of exoplanet properties
- find habitable zone planets for outreach or education

## When to choose
- you need an open, freely licensed (MIT) exoplanet dataset with full version history
- you want community-curated data updated quickly after discoveries
- you prefer human-readable XML files you can parse without special libraries

## When to avoid
- you need a REST API or SQL database interface rather than raw XML files
- you require guaranteed peer-reviewed data quality for every entry
- you need comma/tab-separated tables without extra processing (use the oec_tables repository instead)

## Facets
- artifact type: dataset
- maturity: active
- function: database, data-science
- domain: astronomy, data-science, education
- platform: cross-platform, python
- tags: exoplanets, astronomy, xml-database, open-data, scientific-database

## Member repositories
- OpenExoplanetCatalogue/open_exoplanet_catalogue (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:06.967613+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:39:53.098818+00:00, confidence not recorded.
  - readme: https://github.com/OpenExoplanetCatalogue/open_exoplanet_catalogue (fetched 2026-09-03T02:15:06.967613+00:00, sha 848f51751ca7)
  - homepage: http://openexoplanetcatalogue.com (fetched 2026-08-29T12:44:26.758976+00:00, sha 267b65e688f9)
- Data as of 2026-08-30T08:39:29.467469+00:00.