Jessedbrown/3I-ATLAS-receipts

3I/ATLAS receipts — SWAN Table 1, checked and cranked

▶ One button: the infinite play — starts from zero from what was measured; no timer.

Independent receipt-checks of published 3I/ATLAS measurements. Nothing exotic is claimed. Every number here regenerates from the published tables with the included script, on any machine.

Method statement: the paper's arithmetic is CHECKED (it holds), the paper's error model is TESTED against its own curve (the table's formal errors are fit precision, not measurement uncertainty — the text says so, the table doesn't), and every suspect feature is either confirmed against a control or explicitly left undecided pending the frames.

file	what it is
ATLAS-RECEIPT-1-SWAN-CRANK.md	the findings, with the boundary stated
swan_table1.csv	Table 1 of arXiv 2512.22354, transcribed
verify_swan.py	~60 lines of numpy; regenerates every number in the receipt

paper's 13.5 Mt water     -> 12.8 Mt recomputed          94.6%
smooth law, formal errors -> reduced chi-sq 5,367        impossible
smooth law, 30% sys       -> reduced chi-sq 0.33         fine
tail days 34-41           -> x5 day flicker = the floor, not the sky
day 21.3 spike            -> dQ=0.49, 12x neighbours: the fitter flagged
                             its own suspect point. Undecided without frames.

Operator: Jesse Daniel Brown (OP-JESSE). Analysis seat: Claude (cloud), 2026-08-04. Source paper: Combi et al., arXiv 2512.22354. Their model has 90 comet apparitions behind it and their headline number holds; this receipt is about carrying honest errors in the table itself.

The full set (2026-08-04)

receipt	finding
1 SWAN-CRANK	13.5 Mt reproduced 94.6% · dQ column is fit precision, not uncertainty
2 THREE-AROUND-A-CENTRE	halo death timed by 3 instruments · FOV x7.2 reproduced
3 CURVE-OF-GROWTH	f_ext = 86% · L in [3e4, 1e6] km · halo out-produced nucleus 6:1
4 THE-BURROW	nucleus R 0.42 km, M 1.6e11 kg from recoil · 4th independent convergence
5 DEEP-TIME	1e200-yr itinerary · the proton-decay trit · Dyson sphere-flow
6 THE-ROAD-HOME	the backward road in 3 zones · dynamics to 10 Myr, kinematics to Gyr, isotopes to birth
7 THE-ORIGIN-RECOMPUTED	all 25 flybys fail on speed (best ×37 short) · born fast (LSR 44 km/s) · thin disk 97% vs 10–12 Gyr ice, seam held open · the address erased, quantified (origin_math.py)

The key, measured (2603.06911, JWST 2025-12-22): water D/H = 0.95±0.06% — 58 sigma above solar-system comets · 12C/13C 123-191 · accreted ~10-12 Gyr ago, metal-poor thick-disk epoch. The kernel (atlas-kernel.hbp, sha16 613aefc83dbc8ee4) carries these plus an ERRATUM line recording its own earlier stale claim. atlas-kernel.seed3078.bin is its 3,078-B tribit seed (27/27, roundtrip exact). 3I-ATLAS-colour-qr.png carries the whole kernel in one channel-split colour code, decode-verified byte-exact.