What is the key difference between Astronomy Oracle and Orbit?

Astronomy Oracle belongs to the Aerospace & Astrodynamics category with local stdio execution, while Orbit belongs to the Aerospace & Astrodynamics category with cloud HTTP/SSE execution.

How do I install Astronomy Oracle or Orbit in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Astronomy Oracle and Orbit free or paid?

Astronomy Oracle operates under a Free / Open Source model (No auth required). Orbit operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Astronomy Oracle lists 3 tools with 5 views and 3 GitHub stars. Orbit lists 0 tools with 0 views and 0 GitHub stars.

Can I use both Astronomy Oracle and Orbit together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

How do I install Astronomy Oracle or Orbit in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are Astronomy Oracle and Orbit free to use, or do they require API keys?

Astronomy Oracle is listed under a Free / Open Source model with No auth required . Orbit operates under a Free / Open Source model with No auth required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both Astronomy Oracle and Orbit at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both gregario-astronomy-oracle and orbit as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Astronomy Oracle has a Quality Score of 61 /100 ( Good ) with 5 views, 1 installs, and 3 GitHub stars. Orbit holds a Quality Score of 45 /100 ( Fair ) with 0 views, 0 installs, and 0 GitHub stars.

Side-by-Side Model Context Protocol Comparison

Astronomy Oracle vs Orbit

In-depth architectural comparison of the Astronomy Oracle and Orbit MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Astronomy Oracle

Aerospace & Astrodynamics · Local stdio

Quality: 61/100 (Good) | Auth: No auth required

Orbit

Aerospace & Astrodynamics · Remote HTTP/SSE

Quality: 45/100 (Fair) | Auth: No auth required

Verdict Summary: Choose Astronomy Oracle if you need specialized Aerospace & Astrodynamics tools running via a local process. Choose Orbit if your workspace requires Aerospace & Astrodynamics integration with remote web transport. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Astronomy Oracle when:

You need dedicated capabilities in the Aerospace & Astrodynamics domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: lookup_object, search_objects, plan_session.

Explore Astronomy Oracle Details

Choose Orbit when:

You need dedicated capabilities in the Aerospace & Astrodynamics domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Orbit Details

Feature & Specification Comparison

Specification	Astronomy Oracle gregario Aerospace & Astrodynamics	O Orbit Aerospace & Astrodynamics
Summary	Accurate astronomical catalog data and observing session planner. 13,000+ deep-sky objects from OpenNGC with deterministic visibility, rise/transit/set, and alt/az calculations. npx astronomy-oracle	Orbit Zürich: Workshop-Räume, Preise und freie Slots abfragen, Buchungsanfragen stellen.
Category & Scope	Aerospace & Astrodynamics	Aerospace & Astrodynamics

Tools & Capabilities Breakdown

Astronomy Oracle Tools (3)

lookup_object

Look up a celestial object by Messier number (e.g. M31), NGC/IC designation (e.g. NGC7000), or common name (e.g. Andromeda Galaxy). Optionally compute visibility from a given location and time.

search_objects

Search and filter the celestial object catalog by type, constellation, magnitude, angular size, or catalog membership. Returns a formatted table of matching objects sorted by brightness.

plan_session

Generate an observing session plan for a given location and date. Returns the best celestial objects to observe grouped by time window (evening, midnight, pre-dawn), scored by observability.

Orbit Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Astronomy Oracle Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "gregario-astronomy-oracle": {
      "command": "npx",
      "args": [
        "-y",
        "astronomy-oracle"
      ]
    }
  }
}

Orbit Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "orbit": {
      "url": "https://www.the-orbit.ch/mcp"
    }
  }
}

Frequently Asked Questions

Astronomy Oracle is categorized under Aerospace & Astrodynamics and uses a local stdio subprocess. In contrast, Orbit belongs to Aerospace & Astrodynamics using remote streaming HTTP/SSE transport. Select Astronomy Oracle when you need capabilities focused on aerospace & astrodynamics and Orbit when you require tools for aerospace & astrodynamics.

More alternatives to Astronomy Oracle More alternatives to Orbit Aerospace & Astrodynamics category hub