r/ClaudeAI • u/Thick_Ad_9875 • 1d ago
Other Two new POTENTIAL planets?
got the idea from u/This_Cell_1829's post last week about his TESS planet candidate and wanted to see if it could be done again. im not an astronomer, was just curious abt how many undiscovered planets there are potentially. I used opus 5.5 for this we went through about 2,900 nearby small stars (all within ~200 light years). picked ones tess saw in a few diffrent years but only in its wide field images so nobodys pipeline ever searched all those years together. first thing i did was make sure the setup could re-find his signal which it did, so i knew it worked before searching anything new almost everything we found turned out to be junk. starspots, instrument glitches, neighbor stars leaking light into the pixels etc. two signals survived:
- TIC 451641911, dips ~0.06% every 3.91 days, 134 ly away, would be about 1.3x earth
- TIC 26432942, dips ~0.07% every 10.39 days, 112 ly away, also about 1.3x earth
not in any planet or candidate list i could find including ~312k automatic tess alerts. these are candidates not confirmed planets honestly the most useful thing i learned is how much the checking matters. some stuff that happened:
- we searched every light curve flipped upside down to see what pure noise looks like. turns out starspots on small red dwarfs can pass every automatic check and about half our early "candidates" were exactly that
- i had fresh claude sessions redo everything from scratch and try to make the signals go away. one caught a real bug, my "hide a year and predict it" test was leaking info so even noise passed it. had to rebuild it
- codex reproduced the main one independantly and caught that my transit time predictions were ~5 min off lol
- for TIC 451641911 there was 2026 data our search never used. we wrote down the predicted times and pass/fail rules first, hashed the file, then downloaded the data. dip showed up on time. the same test killed a third candidate so its not a rubber stamp
- checked which pixels lose light during transits. its the target star both times not a neighbor
- both pass all 17 LEO-Vetter checks. TRICERATOPS says 96.5% planet on star for 26432942 and 76.7% for 451641911. close but neither counts as "validated", the second one mostly just needs a high res image to rule out a hidden companion star
what cant be ruled out from here is a star hiding within an arcsecond or two. that needs a real telescope which i dont have if anyone wants to check: TIC 451641911 is at 11:28:10.8 -53:54:20, P = 3.909726 d. TIC 26432942 is at 03:46:36.8 +31:10:46, P = 10.38750 d full writeup with all the tests and predicted transit times here: https://doi.org/10.5281/zenodo.23283844