Astronomy

Jovian Galilean Moons, Europa Flyby, Cassini State and Resonance Solver

Solve Galilean satellite positions with Meeus/Lieske E5 series, chart the Laplace-resonance libration, scan mutual events and eclipses, model a Europa Clipper-style flyby with patched-conic Δv, and solve Jupiter Cassini states from J2 oblateness precession.

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'http://127.0.0.1:3003/en/api/tools/jovian-galilean-moons-europa-flyby-cassini-state-and-resonance-solver' \
  -H 'Content-Type: application/json' \
  -d '{"observationEpoch":"2026-09-08 06:00","reportMode":"full","ephemerisHours":24,"eventWindowHours":48,"resonanceSpanDays":30,"flybyAltitudeKm":25,"perijoveRJ":10,"apojoveRJ":100,"vinfJupiter":6,"cassiniAlpha":0.68,"cassiniS":-0.706,"cassiniI":0.32}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST http://127.0.0.1:3003/en/api/tools/jovian-galilean-moons-europa-flyby-cassini-state-and-resonance-solver

Parameters

Name	Type	Required	Description
observationEpoch	text	Yes	—
reportMode	select	No	—
ephemerisHours	number	No	—
eventWindowHours	number	No	—
resonanceSpanDays	number	No	—

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-jovian-galilean-moons-europa-flyby-cassini-state-and-resonance-solver": {
      "name": "jovian-galilean-moons-europa-flyby-cassini-state-and-resonance-solver",
      "description": "Solve Galilean satellite positions with Meeus/Lieske E5 series, chart the Laplace-resonance libration, scan mutual events and eclipses, model a Europa Clipper-style flyby with patched-conic Δv, and solve Jupiter Cassini states from J2 oblateness precession.",
      "baseUrl": "http://127.0.0.1:3003/mcp/sse?toolId=jovian-galilean-moons-europa-flyby-cassini-state-and-resonance-solver",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "jovian-galilean-moons-europa-flyby-cassini-state-and-resonance-solver",
    "arguments": {
  "observationEpoch": "2026-09-08 06:00",
  "reportMode": "full",
  "ephemerisHours": 24,
  "eventWindowHours": 48,
  "resonanceSpanDays": 30,
  "flybyAltitudeKm": 25,
  "perijoveRJ": 10,
  "apojoveRJ": 100,
  "vinfJupiter": 6,
  "cassiniAlpha": 0.68,
  "cassiniS": -0.706,
  "cassiniI": 0.32
}
  }
}

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