479 points by a585gupt 2 days ago
hey HN, i built this because I'm a satellite nerd who was bored this past weekend.<p>type in any place and it finds every satellite that passed over it in the last 7 days (SGP4 on the CelesTrak catalog, tracking 17k+ objects and runs in your browser in about half a second), then pulls the real Sentinel-2 / Landsat / NASA images from those passes.<p>fun fact: all ~17k objects in orbit are drawn on the GPU, solving Kepler's equation every frame. also cool is that Sentinel-2 timestamps are often 5-10 min off from when the sat actually crosses your spot, so some cool math was involved in making it accurate on the site.<p>it only shows real images taken from those exact satellites, and it never store your location.<p>code: <a href="https://github.com/dev-Armaan/satellites" rel="nofollow">https://github.com/dev-Armaan/satellites</a><p>would love feedback, contributions, or whatever else you guys can offer!
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