Senrokai
d7e8ea1d4d
Add star-map Angular app, ETL pipeline, and caveman plugin Angular 3D star map (galaxy/system/body views, Three.js rendering, navigation store) plus the NASA ETL tooling that builds the star, exoplanet and solar-system datasets, Playwright e2e suite, and the cs:caveman Claude Code plugin (command, agent, skill). Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> @
99 lines
3.2 KiB
TypeScript
99 lines
3.2 KiB
TypeScript
import { writeFileSync } from 'node:fs';
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import { buildStarNameIndex, resolveHostStarId } from '../../src/app/shared/astro/host-star-matching';
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import { ExoplanetRecord } from '../../src/app/shared/models/exoplanet.model';
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import { StarRecord } from '../../src/app/shared/models/star.model';
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import { fetchStars } from './fetchStars';
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import { parseCsvObjects } from './lib/csv';
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import { fetchTextCached } from './lib/http';
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import { dataPath, ensureDataDir } from './lib/paths';
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const TAP_BASE_URL = 'https://exoplanetarchive.ipac.caltech.edu/TAP/sync';
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const TAP_COLUMNS = [
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'pl_name',
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'hostname',
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'ra',
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'dec',
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'sy_dist',
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'pl_orbsmax',
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'pl_orbeccen',
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'pl_orbincl',
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'pl_orblper',
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'pl_orbper',
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'pl_rade',
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'pl_bmasse',
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'disc_year'
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].join(',');
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const TAP_QUERY = `select+${TAP_COLUMNS}+from+ps+where+default_flag=1&format=csv`;
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const TAP_URL = `${TAP_BASE_URL}?query=${TAP_QUERY}`;
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// A host star match must be within this many parsecs of the catalog position to be
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// accepted as a cross-reference (guards against coincidental name/position collisions).
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const MATCH_TOLERANCE_PC = 0.5;
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/**
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* Downloads confirmed exoplanets from the NASA Exoplanet Archive (`Planetary Systems` TAP
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* table), cross-references each host star to the HYG index, and writes `exoplanets.json`.
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*/
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export async function fetchExoplanets(stars?: StarRecord[]): Promise<ExoplanetRecord[]> {
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console.log('Fetching confirmed exoplanets from the NASA Exoplanet Archive...');
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const knownStars = stars ?? (await fetchStars());
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const nameIndex = buildStarNameIndex(knownStars);
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const csv = await fetchTextCached(TAP_URL, 'exoplanet-archive-ps.csv');
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const rows = parseCsvObjects(csv);
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let matched = 0;
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const exoplanets: ExoplanetRecord[] = rows.map((row, index) => {
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const raDeg = Number(row['ra']);
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const decDeg = Number(row['dec']);
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const distancePc = Number(row['sy_dist']);
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const hostStarId = resolveHostStarId(
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{ hostname: row['hostname'], raDeg, decDeg, distancePc },
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knownStars,
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MATCH_TOLERANCE_PC,
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nameIndex
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);
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if (hostStarId !== null) {
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matched++;
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}
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return {
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id: row['pl_name'] || `exoplanet-${index}`,
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hostStarId,
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hostStarName: row['hostname'],
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name: row['pl_name'],
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radiusEarth: parseOptionalNumber(row['pl_rade']),
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massEarth: parseOptionalNumber(row['pl_bmasse']),
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discoveryYear: parseOptionalNumber(row['disc_year']),
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orbit: {
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semiMajorAxisAu: parseOptionalNumber(row['pl_orbsmax']),
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eccentricity: parseOptionalNumber(row['pl_orbeccen']),
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inclinationDeg: parseOptionalNumber(row['pl_orbincl']),
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argumentOfPeriapsisDeg: parseOptionalNumber(row['pl_orblper'])
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}
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};
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});
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ensureDataDir();
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writeFileSync(dataPath('exoplanets.json'), JSON.stringify(exoplanets));
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console.log(` wrote ${exoplanets.length} exoplanets (${matched} cross-referenced to a HYG host star).`);
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return exoplanets;
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}
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function parseOptionalNumber(value: string | undefined): number | undefined {
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if (!value) {
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return undefined;
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}
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const parsed = Number(value);
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return Number.isFinite(parsed) ? parsed : undefined;
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}
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if (require.main === module) {
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fetchExoplanets().catch((error) => {
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console.error(error);
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process.exitCode = 1;
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});
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}
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