🛰 probes: the live layer — 8 spacecraft via Horizons, trails + light-time (opus)
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>
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monsterrobotparty
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@ -44,6 +44,11 @@ html, body {
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.body-label.moon { color: var(--dim); font-size: 9.5px; }
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.body-label .lbl-dist { color: var(--brass-dim); font-size: 9px; }
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.body-label.focused { color: var(--brass); font-weight: 700; }
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.craft-label {
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font-size: 9.5px; letter-spacing: 0.3px; white-space: nowrap;
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text-shadow: 0 0 4px #000, 0 0 8px #000; transform: translate(-50%, -180%);
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user-select: none; padding: 1px 3px;
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}
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/* ---- breadcrumb ---- */
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#breadcrumb {
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176
js/layers/spacecraft.js
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176
js/layers/spacecraft.js
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@ -0,0 +1,176 @@
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// SOLARGOD spacecraft layer (Stage 4) — live positions of real deep-space probes
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// from JPL Horizons via serve.py's proxy. Each craft's VECTORS table (heliocentric
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// J2000 ecliptic, AU) is fetched once over a multi-year span, disk-cached, and
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// Catmull-Rom interpolated per frame. Additive + fail-soft: a craft that won't
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// resolve is skipped with a warn status, never breaking the scene (brief §4, §0).
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export default function create(ctx) {
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const { THREE, scene, CONFIG, lib, ui, scale, ephem, clock, worldGroup, toLocal, makeLabel } = ctx;
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const ROSTER = [
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{ id: 'voyager1', name: 'Voyager 1', cmd: '-31', color: '#ff6ad5' },
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{ id: 'voyager2', name: 'Voyager 2', cmd: '-32', color: '#ff9f40' },
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{ id: 'newhorizons', name: 'New Horizons', cmd: '-98', color: '#6fd3ff' },
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{ id: 'jwst', name: 'JWST', cmd: '-170', color: '#ffe14d' },
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{ id: 'parker', name: 'Parker Solar Probe', cmd: '-96', color: '#ff5964' },
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{ id: 'juno', name: 'Juno', cmd: '-61', color: '#8f7bff' },
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{ id: 'lucy', name: 'Lucy', cmd: '-49', color: '#6fcf97' },
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{ id: 'psyche', name: 'Psyche', cmd: '-255', color: '#c9c9c9' },
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];
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const START = '2023-01-01', STOP = '2030-01-01', STEP = '2 d';
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const TRAIL_MAX = 60;
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const glyphTex = makeGlyph();
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const _abs = {}, _earth = {}, _p = {};
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const crafts = [];
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let show = true;
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for (const c of ROSTER) {
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const spr = new THREE.Sprite(new THREE.SpriteMaterial({ map: glyphTex, color: new THREE.Color(c.color), transparent: true, depthWrite: false }));
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spr.visible = false;
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spr.userData.craftId = c.id;
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scene.add(spr);
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const tgeo = new THREE.BufferGeometry();
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tgeo.setAttribute('position', new THREE.BufferAttribute(new Float32Array(TRAIL_MAX * 3), 3));
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const trail = new THREE.Line(tgeo, new THREE.LineBasicMaterial({ color: new THREE.Color(c.color), transparent: true, opacity: 0.5 }));
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trail.frustumCulled = false; trail.visible = false;
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worldGroup.add(trail);
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const lbl = makeLabel(spr, c.name, 'craft-label');
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lbl.div.style.color = c.color;
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lbl.obj.visible = false;
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crafts.push({ c, spr, trail, tgeo, lbl, samples: null });
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}
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ui.addLayer('spacecraft', 'Spacecraft', true, (on) => { show = on; });
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ui.setStatus('spacecraft', 'fetching…', 'warn');
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loadAll();
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// Sequential (not parallel) — Horizons throttles bursts, and the disk cache
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// makes reloads free anyway (brief §12: don't hammer JPL).
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async function loadAll() {
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let ok = 0, fail = 0;
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for (let i = 0; i < ROSTER.length; i++) {
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const c = ROSTER[i];
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try {
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const s = await fetchCraft(c);
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if (s && s.length > 1) { crafts[i].samples = s; ok++; }
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else fail++;
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} catch (e) { fail++; console.warn('[solargod] spacecraft', c.id, e.message); }
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ui.setStatus('spacecraft', `fetching ${i + 1}/${ROSTER.length}… ${ok} ok`, 'warn');
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}
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ui.setStatus('spacecraft', `${ok} tracked${fail ? `, ${fail} unavailable` : ''} · Horizons ok`, ok ? 'ok' : 'err');
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}
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// Fetch one craft over [start, stop]. If Horizons rejects the span (a craft's
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// SPK kernel doesn't cover it — e.g. Psyche pre-launch, Juno past coverage), it
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// says exactly where its data begins/ends; parse that and refetch clamped once.
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async function fetchCraft(c, start = START, stop = STOP, retries = 2) {
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const q = {
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format: 'text', COMMAND: `'${c.cmd}'`, OBJ_DATA: 'NO', MAKE_EPHEM: 'YES', EPHEM_TYPE: 'VECTORS',
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CENTER: "'500@10'", START_TIME: `'${start}'`, STOP_TIME: `'${stop}'`, STEP_SIZE: `'${STEP}'`,
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REF_PLANE: 'ECLIPTIC', REF_SYSTEM: 'J2000', VEC_TABLE: '1', OUT_UNITS: 'AU-D', CSV_FORMAT: 'YES',
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};
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const qs = Object.entries(q).map(([k, v]) => `${k}=${encodeURIComponent(v)}`).join('&');
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const res = await fetch(`${CONFIG.proxy.horizons}?${qs}`);
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const text = await res.text();
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const soe = text.indexOf('$$SOE'), eoe = text.indexOf('$$EOE');
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if (soe < 0 || eoe < 0) {
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if (retries > 0) {
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const prior = text.match(/prior to A\.D\.\s*(\d{4}-[A-Za-z]{3}-\d{2})/);
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const after = text.match(/after A\.D\.\s*(\d{4}-[A-Za-z]{3}-\d{2})/);
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let ns = start, np = stop, changed = false;
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if (prior) { ns = shiftDate(prior[1], +2); changed = ns !== start; }
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if (after) { np = shiftDate(after[1], -2); changed = changed || np !== stop; }
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if (changed) return fetchCraft(c, ns, np, retries - 1);
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}
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throw new Error('no ephemeris block');
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}
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const out = [];
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for (const line of text.slice(soe + 5, eoe).split('\n')) {
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const p = line.split(',');
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if (p.length < 5) continue;
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const jd = parseFloat(p[0]), x = parseFloat(p[2]), y = parseFloat(p[3]), z = parseFloat(p[4]);
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if (Number.isFinite(jd) && Number.isFinite(x)) out.push({ jd, x, y, z });
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}
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return out;
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}
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// "2023-OCT-13" (+ N days) → "YYYY-MM-DD" for a Horizons START/STOP_TIME.
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function shiftDate(hzn, days) {
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const M = { JAN: 0, FEB: 1, MAR: 2, APR: 3, MAY: 4, JUN: 5, JUL: 6, AUG: 7, SEP: 8, OCT: 9, NOV: 10, DEC: 11 };
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const [y, mon, d] = hzn.split('-');
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const dt = new Date(Date.UTC(+y, M[mon.toUpperCase()], +d));
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dt.setUTCDate(dt.getUTCDate() + days);
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return `${dt.getUTCFullYear()}-${String(dt.getUTCMonth() + 1).padStart(2, '0')}-${String(dt.getUTCDate()).padStart(2, '0')}`;
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}
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// Catmull-Rom sample at jd → {x,y,z} AU, or null if jd is outside the span.
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function interp(samples, jd, out) {
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if (jd < samples[0].jd || jd > samples[samples.length - 1].jd) return null;
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let lo = 0, hi = samples.length - 1;
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while (hi - lo > 1) { const m = (lo + hi) >> 1; if (samples[m].jd <= jd) lo = m; else hi = m; }
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const p1 = samples[lo], p2 = samples[hi];
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const p0 = samples[Math.max(0, lo - 1)], p3 = samples[Math.min(samples.length - 1, hi + 1)];
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const t = (jd - p1.jd) / (p2.jd - p1.jd || 1);
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out.x = catmull(p0.x, p1.x, p2.x, p3.x, t);
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out.y = catmull(p0.y, p1.y, p2.y, p3.y, t);
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out.z = catmull(p0.z, p1.z, p2.z, p3.z, t);
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return out;
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}
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return {
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id: 'spacecraft',
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onClockTick(simMs, jd) {
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const camDist = ctx.camera.position.length();
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let earthDone = false;
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for (const cr of crafts) {
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const live = show && cr.samples && interp(cr.samples, jd, _p);
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if (!live) { cr.spr.visible = false; cr.trail.visible = false; cr.lbl.obj.visible = false; continue; }
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if (!earthDone) { ephem.helioEcl('earth', jd, _earth); earthDone = true; }
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cr.spr.visible = true; cr.lbl.obj.visible = true;
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scale.viewFromEcl(_p, _abs);
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toLocal(_abs, cr.spr.position);
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cr.spr.scale.setScalar(Math.max(0.01, camDist * 0.02));
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// trail: up to TRAIL_MAX cached samples before now
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let end = 0; while (end < cr.samples.length && cr.samples[end].jd <= jd) end++;
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const start = Math.max(0, end - TRAIL_MAX);
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const arr = cr.tgeo.attributes.position.array;
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let n = 0;
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for (let i = start; i < end; i++, n++) {
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scale.viewFromEcl(cr.samples[i], _abs);
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arr[n * 3] = _abs.x; arr[n * 3 + 1] = _abs.y; arr[n * 3 + 2] = _abs.z;
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}
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cr.tgeo.setDrawRange(0, n);
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cr.tgeo.attributes.position.needsUpdate = true;
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cr.trail.visible = n > 1;
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const rSun = Math.hypot(_p.x, _p.y, _p.z);
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const rEarth = Math.hypot(_p.x - _earth.x, _p.y - _earth.y, _p.z - _earth.z);
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cr.lbl.div.textContent = `${cr.c.name} · ${lib.fmtAU(rSun)} · ${lib.fmtLightTime(rEarth)} lt`;
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}
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},
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handlePick(raycaster) {
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const markers = crafts.filter((c) => c.spr.visible).map((c) => c.spr);
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const hits = raycaster.intersectObjects(markers, false);
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if (hits.length) {
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const cr = crafts.find((c) => c.spr === hits[0].object);
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if (cr) ui.toast(cr.lbl.div.textContent || cr.c.name);
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return true;
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}
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return false;
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},
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};
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function catmull(p0, p1, p2, p3, t) {
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const t2 = t * t, t3 = t2 * t;
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return 0.5 * ((2 * p1) + (-p0 + p2) * t + (2 * p0 - 5 * p1 + 4 * p2 - p3) * t2 + (-p0 + 3 * p1 - 3 * p2 + p3) * t3);
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}
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function makeGlyph() {
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const s = 64, cv = document.createElement('canvas'); cv.width = cv.height = s;
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const g = cv.getContext('2d');
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g.translate(s / 2, s / 2);
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g.fillStyle = '#fff';
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g.beginPath(); g.moveTo(0, -s * 0.32); g.lineTo(s * 0.32, 0); g.lineTo(0, s * 0.32); g.lineTo(-s * 0.32, 0); g.closePath(); g.fill();
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g.strokeStyle = 'rgba(255,255,255,0.5)'; g.lineWidth = 3; g.beginPath(); g.arc(0, 0, s * 0.42, 0, 7); g.stroke();
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const t = new THREE.CanvasTexture(cv); t.colorSpace = THREE.SRGBColorSpace; return t;
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}
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}
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@ -339,7 +339,7 @@ const ctx = {
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moonsOf, PLANET_ORDER,
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};
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const LAYER_MODULES = ['./layers/planets.js', './layers/moons.js', './layers/rings.js'];
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const LAYER_MODULES = ['./layers/planets.js', './layers/moons.js', './layers/rings.js', './layers/spacecraft.js'];
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const activeLayers = [];
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async function loadLayers() {
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const results = await Promise.allSettled(LAYER_MODULES.map((p) => import(p)));
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6
serve.py
6
serve.py
@ -169,7 +169,11 @@ class Handler(SimpleHTTPRequestHandler):
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with urllib.request.urlopen(req, timeout=60) as r:
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body = r.read()
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ctype = r.headers.get("Content-Type", "text/plain")
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_cache_write(url, body, ctype, _requested_span_is_past(name, query))
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# Horizons returns HTTP 200 even for "no ephemeris" errors — don't cache
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# those (a transient/burst failure would otherwise poison the cache). A
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# real ephemeris always contains the $$SOE marker.
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if name != "horizons" or b"$$SOE" in body:
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_cache_write(url, body, ctype, _requested_span_is_past(name, query))
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return self._send(200, ctype, body, {"X-Solargod-Cache": "miss"})
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except urllib.error.HTTPError as e:
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body = e.read() or str(e).encode()
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26
verify.html
26
verify.html
@ -137,9 +137,35 @@
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s.textContent = `${passed}/${n} gates pass` + (failed ? ` — ${failed} FAILING` : ' — ALL PASS ✦');
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s.className = failed ? 'fail' : 'pass';
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}
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// ---- 10. Voyager 1 (-31) @ 2026-07-15 ≈ (−32.07, −136.21, +98.55) AU (brief §9) ----
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async function craftCheck(label, command, jd, want, tol) {
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const tr = pendingRow(label);
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try {
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const got = await horizonsVec(command, jd);
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const worst = Math.max(Math.abs(got.x - want.x), Math.abs(got.y - want.y), Math.abs(got.z - want.z));
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tr.remove();
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row(label, worst <= tol, `Δmax=${worst.toFixed(3)} AU (tol ${tol}) · Horizons (${got.x.toFixed(2)}, ${got.y.toFixed(2)}, ${got.z.toFixed(2)}) · ${Math.hypot(got.x,got.y,got.z).toFixed(1)} AU out`);
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} catch (err) { tr.remove(); row(label, false, `Horizons error: ${err.message}`); }
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finish();
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}
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// ---- 11. JWST (-170) hugs Earth (Δ < 0.02 AU) ----
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async function jwstCheck() {
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const label = 'JWST (-170) hugs Earth Δ<0.02 AU';
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const tr = pendingRow(label);
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try {
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const j = await horizonsVec('-170', 2461236.5);
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const e = await horizonsVec('399', 2461236.5);
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const d = Math.hypot(j.x - e.x, j.y - e.y, j.z - e.z);
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tr.remove();
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row(label, d < 0.02, `Δ=${(d).toFixed(4)} AU from Earth (${(d*lib.AU_KM/1e6).toFixed(2)}M km)`);
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} catch (err) { tr.remove(); row(label, false, `Horizons error: ${err.message}`); }
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finish();
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}
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finish();
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liveCheck('Mars @ J2000.0 vs live Horizons', 'mars', '499', 2451545.0, 0.01);
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liveCheck('Jupiter @ 1900-01-01 vs live Horizons', 'jupiter', '599', 2415020.5, 0.02);
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craftCheck('Voyager 1 (-31) @ 2026-07-15', '-31', 2461236.5, { x: -32.07, y: -136.21, z: 98.55 }, 0.05);
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jwstCheck();
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</script>
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</body>
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</html>
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