SYZYGY's 104 diamonds clustered into ~1.6% of the 250-yr timeline (invisible in
deep time). Add a second strip under #timeline-outer that maps ONLY the computed
±2 yr window to full width — diamonds live there (same ev-* classes + click-jump),
and the main strip gets a brass bracket marking the window's true extent (1.6%
near, 0.5% in deep time). windowFraction exported + gated. Verified: 22/22
(+band gate); diamonds spread 0.4–98.7%; click-jump works in near AND deep mode;
zero console errors both epochs.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
V.1 — cut the CDN tether. Vendored the exact pinned files the importmap used
(three.module.js r170 + OrbitControls + CSS2DRenderer, ~1.29 MB) under
vendor/three/, mirroring the package layout so the addons' bare `import from
'three'` resolves. Import graph verified shallow (addons import only 'three';
the bundle is self-contained). Both importmaps (index.html, verify.html) now
point at ./vendor/three/… — zero jsdelivr/CDN URLs remain. MIT LICENSE +
PROVENANCE.txt retained.
V.2 — open deep time. EPOCH toggle (1800–2050 / 3000 BC–3000 AD) next to
MEGA/TRUE; deep mode is a hash-carried page mode (&e=1) read before ephem/clock
init → ephem.setExtendedRange(true) + CONFIG.time swaps to the deep bounds.
Timeline end labels + scrub tooltip now read from CONFIG (were hardcoded
1800/2050). Toggle serializes current view and reloads with the flipped e token
(orbit paths + element resolution are baked per-session). Appended 1 decade/s
and 1 century/s rates. Hash e token added to applyHash/serializeHash.
V.3 — appended verify gates (PERIHELION-V): Jupiter @1000 BC (extended 2a+2b)
vs live Horizons barycenter tol 0.15 AU (Δ 0.0041); Mercury @2500 tol 0.02 AU
(Δ 3e-5); Table 2b M-correction proven live (zeroing it worsens Jupiter@1000BC
by 0.0214 AU). Core 13 gates untouched.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Stage 5. asteroids.js: 1500-strong main-belt sample from SBDB (sb-class=MBA),
propagated by the shared Kepler core, one Points cloud refreshed ≤10 Hz, off by
default. comets.js: 1P/2P/67P/96P from SBDB (elliptical only) with full drawn
orbits, marker + anti-sunward tail scaled 1/r², on by default. neos.js: CAD ±30d
close-approach radar around Earth, colored by miss distance, clickable, lunar-
distance labels, off by default. All fail-soft. verify.html gate: belt view-radii
12.1–13.9 ∈ (Mars 10.7, Jupiter 17.4); Halley aphelion 35.3 AU > Neptune. Also
serialized verify's live Horizons checks (burst-throttle fix) → 13/13 green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Stage 4. spacecraft.js: Voyager 1/2, New Horizons, JWST, Parker, Juno, Lucy,
Psyche. Fetches VECTORS (heliocentric ecliptic AU) over a multi-year span through
serve.py's cache, Catmull-Rom interpolated per frame; glowing diamond marker +
fading trail + label with live distance from Sun and one-way light-time from
Earth. Fail-soft per craft. Robustness: sequential fetch (Horizons throttles
bursts), serve.py skips caching non-$$SOE (error) responses, and span
auto-recovery clamps START/STOP to a craft's SPK coverage from Horizons' own
"prior to / after" hints (Psyche pre-launch, Juno past coverage) → 8/8 tracked.
Gate: Voyager 1 @2026-07-15 = (-32.07,-136.21,98.55) Δ0.002 AU; JWST Δ0.011 AU
from Earth. verify.html gates 10-11 green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Stage 1. ephem.js: JPL SSD approximate elements (Table 1 + 2a/2b plumbing),
Newton Kepler solver, reusable eclFromElements core (planets + small bodies),
orbitPath sampler. planets.js: 8 planets + Pluto as textured exaggerated spheres
on MEGA-compressed orbits with labels, rebuild-on-drift. verify.html: 9 gates all
green IN BROWSER incl. live Horizons via proxy — Mars @2026-07-15 Δ3.3e-4 AU,
Jupiter Δ2.9e-3, Earth Δ3.9e-5; Mars @J2000 vs live Δ4.8e-5; Jupiter @1900 Δ2.0e-3.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
