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AstroSat – A modern 3D satellite globe tracker using browser-side SGP4

https://astrosat.app/
1•CommanderBlend•1h ago

Comments

CommanderBlend•1h ago
Hi guys!,

I love keeping track of satellites and see them on a globe, the scale and the orbits and what not, but most of the popular tracking sites out there look like they were built with a Raspberry Pi at the dawn of the internet. So I wanted to build something fast, minimalist, and interactive, so I custom-built AstroSat. Since i have my own n8n server running i thought might as well add an AI chat bot which has knowledge of the stuff you track and where you are and weather and stuff like that and i also gave it access to the storage so it can make custom constellations and delete them and all that. So more about the site:

The Tech & Performance

- Browser-Side Propagation: To keep performance fluid (even on mobile web), orbits are computed live directly in your browser using the SGP4 propagation model. Fresh TLE data is automatically pulled from Space-Track every 2 hours.

- Three Ways to Explore: Besides the normal 3D globe i also added a first-person Sky view based on your exact location, and a to-scale Solar System view with Keplerian positions. To put that stuff in perspective also.

Mission control

Instead of digging through dense data and look at old ugly sat viewers, I integrated a contextual AI agent. Which understands your local coordinates, real-time app state, live rocket launch countdowns, and space weather data. But also news articles and what your tracked sats are and constellations you (or the ai) made.

It is completely free and open to use right now while I gather user feedback. You can create an account open the panel and try prompts like:

- "Show me the ISS on the globe" (The AI actively flies the 3D canvas camera straight to the spacecraft)

- "What's the best thing to see tonight?" (Weighs passes, magnitude, and weather data gives you the best pick.

- "Make a constellation of all GPS sats" (Dynamically builds, filters, and highlights custom constellations.

- "Is anything I track assing over me tonight?"

- "Tell me about any satellite in orbit"

- "Will the aurora be visible from here?" (Cross-references live Kp-index data with your current latitude)

Daily brief

Currently also working on setting up a daily brief which gatheres the news articles, upcoming launches, fly by's things happening to your tracked sats or constellations and stuff like that, and AI makes a daily brief custom to you.

ANYWAYS I could use some feedback because im not sure that, even when I am be interested in this stuff, other people would actually care and use it as well.

The app requires no account or sign-up to test. I really want to know how the AI functionalities feel to you and how I can make them better.

- What did you think of the AI's responsiveness and utility?

- What cool features, custom orbital constraints, or new capabilities should I add to Mission Control next?

- Did you run into any layout or performance bugs on your specific devices?

Check it at astrosat dot app and let me know what you all think.

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