io.github.cyanheads/astronomy-mcp-server

up checked 2026-11-10T22:37:46.493Z

Unclaimed · Unverified

Agent searches it appeared in, last 30 days: 0. Run this server? Claim the listing: verified label, uptime alerts and analytics.

Publisher-provided description

Offline observational astronomy: positions, rise/set, moon phases, eclipses, and seasons.

Summary by lookupd

Computes sky positions, rise/set times, moon phases, eclipses, seasons, satellite passes, and JPL Horizons ephemerides for observers.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http astronomy-mcp-server https://astronomy.caseyjhand.com/mcp

Claude Code, npm package (stdio)

claude mcp add astronomy-mcp-server -- npx -y @cyanheads/astronomy-mcp-server

Claude Code, npm package (stdio)

claude mcp add astronomy-mcp-server -- npx -y @cyanheads/astronomy-mcp-server

Codex, remote (streamable-http)

codex mcp add astronomy-mcp-server --url https://astronomy.caseyjhand.com/mcp

Codex, npm package (stdio)

codex mcp add astronomy-mcp-server -- npx -y @cyanheads/astronomy-mcp-server

Codex, npm package (stdio)

codex mcp add astronomy-mcp-server -- npx -y @cyanheads/astronomy-mcp-server

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "astronomy-mcp-server": {
      "url": "https://astronomy.caseyjhand.com/mcp"
    }
  }
}

Cursor, npm package (stdio) → .cursor/mcp.json

{
  "mcpServers": {
    "astronomy-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/astronomy-mcp-server"
      ]
    }
  }
}

Cursor, npm package (stdio) → .cursor/mcp.json

{
  "mcpServers": {
    "astronomy-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/astronomy-mcp-server"
      ]
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (7 tools)

Publisher-provided text

• astronomy_get_sky_position Compute the apparent topocentric position of one solar-system body (sun, moon, mercury through neptune, pluto) or a named bright star for an observer location a
• astronomy_get_rise_set Compute rise, set, and culmination (transit) times and maximum transit altitude for a body at an observer location. Searches forward from `start` (default now)
• astronomy_get_moon_phase Report the Moon phase for an instant: illuminated fraction, phase name, synodic age in days since the new moon, phase longitude (the Moon–Sun ecliptic-longitude
• astronomy_find_events Search forward from a start time for the next occurrences of one sky-event class, selected by the `event` enum: solar_eclipse, lunar_eclipse, equinox, solstice,
• astronomy_list_visible The one-call "what is up right now" answer. For an observer location and instant, iterate every naked-eye solar-system body (and, with include_stars, the bundle
• astronomy_get_ephemeris Fetch a time-series ephemeris for a small body (asteroid or comet) or spacecraft from JPL Horizons — RA/Dec, distance, and apparent magnitude over a span, optio
• astronomy_get_satellite_passes Predict visible passes of a satellite (e.g. the ISS, NORAD 25544) over an observer in the next `days`. Identify the satellite by exactly one of `norad_id` or `n

Details

• Version: 0.5.0
• Transports: streamable-http, stdio
• Uptime (7 days): 100%
• Median latency: 674 ms
• First indexed: 2026-11-01T09:25:43.070Z
• Last seen in registry: 2026-11-01T09:25:43.529Z
• Repository: https://github.com/cyanheads/astronomy-mcp-server

Badge for your README

Shows this live status and links here; updates hourly.

[![lookupd status](https://lookupd.com/badge/io.github.cyanheads/astronomy-mcp-server.svg)](https://lookupd.com/servers/io.github.cyanheads/astronomy-mcp-server)

• 62092 servers
• Last crawl: 2026-11-11T17:38:11.606Z
• API base: https://api.lookupd.com
• MCP URL: https://api.lookupd.com/mcp