artemis-ii-cli
v1.0.2
Published
Terminal-based Artemis II spacecraft tracker with live telemetry from JPL Horizons
Maintainers
Readme
Artemis II CLI Tracker
A terminal-based (TUI) tracker for the Artemis II mission, showing live spacecraft telemetry from NASA/JPL Horizons directly in your terminal.

Features
- Live Orion spacecraft position relative to Earth and Moon
- High-frequency live telemetry extrapolation at 4 FPS
- Observer tracking for Sky Position (RA/DEC) and Communications Delay (Light-Time)
- ASCII tracker visualization showing Orion's position between Earth and Moon
- Mission timeline with color-coded event status
- Velocity vector display
- Crew manifest
- Network polling synchronizes every 2 minutes to prevent API rate limits
- Toggle between km and miles
Install
npx artemis-ii-cliOr clone and run locally:
git clone https://github.com/yourusername/artemis-ii-cli.git
cd artemis-ii-cli
npm install
npm startKeyboard
| Key | Action |
|-----|--------|
| q | Quit |
| Ctrl+C | Quit |
| m | Toggle miles/km |
| r | Force refresh API data |
Data Source
All telemetry data is fetched directly from the JPL Horizons API (NASA/JPL). The spacecraft ID is -1024 (Artemis II / Orion EM-2).
License
MIT - Ryan Fox
