Astronomy Oracle
Accurate astronomical catalog data and observing session planner for LLM assistants. Stops hallucinated magnitudes, coordinates, and visibility.
Features
- 3 tools for object lookup, catalog search, and observing session planning
- 13,000+ deep-sky objects from the OpenNGC catalog (NGC, IC, Messier, and addendum objects)
- Deterministic astronomy math — Julian dates, sidereal time, alt/az conversion, rise/transit/set times
- Zero network dependency — all data is bundled, all calculations are local
Install
Run directly with npx:
npx astronomy-oracleOr install globally:
npm install -g astronomy-oracleConfiguration
Claude Desktop
Add to your claude_desktop_config.json:
{
"mcpServers": {
"astronomy-oracle": {
"command": "npx",
"args": ["-y", "astronomy-oracle"]
}
}
}Claude Code
claude mcp add astronomy-oracle -- npx -y astronomy-oracleTool Reference
lookup_object
Look up a celestial object by Messier number, NGC/IC designation, or common name. Optionally compute visibility from a given location and time.
