alt Hacker NewsShow HN: Every satellite that passed over any place this week, and its photos
hey HN, i built this because i wanted to know what had actually photographed my street.
type in any place and it finds every satellite that passed over it in the last 7 days (SGP4 on the CelesTrak catalog, runs in your browser in about half a second), then pulls the real Sentinel-2 / Landsat / NASA images from those passes.
some fun bits: - the pass search can't skip a pass. checked it against a brute force on poles, the antimeridian and tiny swaths: 0 missed - all ~17k objects in orbit are drawn on the GPU, solving Kepler's equation every frame - Sentinel-2 timestamps are often 5-10 min off from when the sat actually crosses your spot, which was a fun one to figure out
it only says "watched" if a real image exists, and it doesn't store your location.
code: https://github.com/dev-Armaan/satellites
would love feedback, especially on what data sources to add
Comments
Very cool. Was this inspired by the latest season of cyberpunk? In case you and Capri need to escape onto a satellite. XD
This is great for planning backpacking trips. I have been using Copernicus but you have a lot more and it's much easier to access. Very nice!
I have seen a lot of sites with satellites’ overviews… I work in geospatial.
This site is really good one as you can see exact image taken by a satellite.
Well done.
That looks really nice. I especially like the view showing the satellite flying overhead and the line marking the scanned area.
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This is very cool, and a bit creepy too, but mostly cool
Really liked the UX, even on a small phone screen it was easy to use. I enjoyed the big typing cursor, it was a unique surprise (almost 100% of text form inputs have either a very small vertical line cursor, or nothing at all - the big cursor feels refreshing)