Show HN: Real-time Solar System with 526k asteroids and all tracked satellites

Oh man, it seems like my asteroid (Minor Planet 31689 - Sebmellen [0]) is missing.[0]: https://www.wikidata.org/wiki/Q6711174[1]: https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=20031...

Author here. It's a browser view of the Solar System at real scale, with its current state, plus the objects around Earth from the CelesTrak catalog.Data: CelesTrak TLEs (SGP4), asteroids and comets from JPL SBDB, spacecraft positions from JPL Horizons. Updated daily.Rendering is WebGL2, orbit propagation runs in web workers. The asteroid set (~30 MB) loads in the background.The time slider runs forwards and backwards; satellites appear and disappear by launch date. reply: How are you sourcing the spacecraft positions from JPL? Are you just grabbing a huge list of state vectors?My old day job was to compute asteroid positions for NASA telescopes, if you are interested in orbit prop you may be interested in: https://github.com/dahlend/keteI made an asteroid only version of yours earlier this year, where it does full orbit propagation in workers: https://dahlend.github.io/ketev/

Just spent a little time following Europa Clipper, it will fly by Earth very soon! If you zoom out from Earth, it's already pretty close. This will be its second gravity assist after Mars. Very cool site!

Celestia did all of this and more. 10+ years ago.https://celestiaproject.space/

Beautiful site. I love how tranquil the scene becomes when satellites and spacecraft is unchecked. Thanks for that SpaceX (and others). reply: As many are fond of pointing out, SpaceX wouldn't exist without NASA, so you can thank NASA for that too!

I hate to be the one to come here with a feature request but can you guys hurry up with the Universe already?

This is amazing. Well done. How long did it take to make? reply: Thanks! It's a byproduct of another project, so hard to say exactly. A few evenings.

Turning on asteroids is a jump scare

Fun: 116 d/s with Earth/etc selected, gives a Sun "orbiting" the Earth/etc effect.Bug: ISO DEB at 17 min/s looked normal, but at 2.8 h/s it became a solid-ish (lots of crossing lines) red ellipsoid on the opposite side of the Earth. Upon returning to 17 min/s, it snapped back, after some delay. Current-ish Chromium on linux/X11.Feat: Pressing ESC deselects.Feat: Perhaps spacebar could pause/unpause time? To avoid fiddly "note current time ratio by counting arrows or hovering, then click pause. Afterward, click the right place to restore time ratio".UX: Would you believe I wrote a Feat for 'add a "Now" button to date popup', not "seeing" the current button? Hmm, perhaps move it between date and time ratio?UX: Just now for me, upon page load, nothing is moving and the Earth seems a black ball (night over Africa, with night lights obscured by satellite dots). So I could spend several minutes exploring, without being both close enough and oriented to notice there's a texture map. Perhaps start positioned over the terminator (interestingly pretty) and with scaled time (interestingly moving; demos motion; draws attention to time zoom. Maybe 17 min/s?).Issue:...

I love this; also runs surprisingly smoothly (at least in browser; didn't check mobile). Also beautiful and hypnotic in motion. What's the next step that you want to take to develop it (not that there needs to be one)?

There are way more asteroids near the Earth than I thought.

Wow, speedy and convenient! Well done!Some insights:* There is sooo much space debris! Dead sattelites and rocket bodies* Starlink put up a hell of lot of satellites, too.* There is a pretty dense sphere of items around the earth at geo-stationary orbit, a bit like a mantle; but most of all in a circle on that sphere.

Quite incredible how much manmade crap there is up there, and much of it probably useless, and a potential problem for the satellites which are of actual use.

What's with those giant blobs of asteroids offset in jupiter's orbit by like 60deg on either side?

Almost 1 in 3 tracked spacecraft is Starlink, is that accurate?

Super! Not easy to select or center on a planet though.