Data Sources

NASA Exoplanet Archive

The primary source for confirmed exoplanet data.

Property	Value
URL	https://exoplanetarchive.ipac.caltech.edu
Protocol	REST
Auth	None
CORS	No (fetched at build time)
Size	~5,700 confirmed exoplanets
Tier	Static (build-time fetch)

Usage

// Build-time fetch for static data
const response = await fetch(
  'https://exoplanetarchive.ipac.caltech.edu/TAP/sync?' +
  'query=SELECT+*+FROM+ps&format=json'
);

Notes

• Data is small enough to fetch at build time
• Updates weekly, so daily rebuilds keep data fresh
• JSON format available via TAP endpoint

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SDSS SkyServer

Sloan Digital Sky Survey data access.

Property	Value
URL	https://skyserver.sdss.org
Protocol	SQL via REST
Auth	None
CORS	Yes
Size	Millions of objects
Tier	Direct (query on demand)

Usage

const query = `
  SELECT TOP 1000
    ra, dec, z, petroMag_r
  FROM SpecObj
  WHERE z BETWEEN 0.01 AND 0.1
`;

const response = await fetch(
  `https://skyserver.sdss.org/dr18/SkyServerWS/SearchTools/SqlSearch?` +
  `cmd=${encodeURIComponent(query)}&format=json`
);

Notes

• SQL interface allows complex queries
• Rate limited, so cache results where possible
• Multiple data releases available (DR18 is current)

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Gaia Archive

European Space Agency’s stellar catalog.

Property	Value
URL	https://gea.esac.esa.int/archive
Protocol	TAP (ADQL)
Auth	None
CORS	Yes
Size	1.8 billion stars
Tier	Direct (async queries, streaming)

Usage

// Async query for large results
const response = await fetch(
  'https://gea.esac.esa.int/tap-server/tap/async',
  {
    method: 'POST',
    body: new URLSearchParams({
      REQUEST: 'doQuery',
      LANG: 'ADQL',
      FORMAT: 'json',
      QUERY: `
        SELECT TOP 10000
          source_id, ra, dec, parallax, phot_g_mean_mag
        FROM gaiadr3.gaia_source
        WHERE parallax > 10
      `
    })
  }
);

Notes

• Use async queries for results > 2000 rows
• Streaming required for million+ row results
• ADQL is similar to SQL with astronomical extensions

---

VizieR

CDS catalog service with thousands of published catalogs.

Property	Value
URL	https://vizier.cds.unistra.fr
Protocol	TAP (ADQL)
Auth	None
CORS	Yes
Size	Varies by catalog
Tier	Direct

Usage

const response = await fetch(
  'https://tapvizier.cds.unistra.fr/TAPVizieR/tap/sync?' +
  'REQUEST=doQuery&LANG=ADQL&FORMAT=json&' +
  'QUERY=SELECT+*+FROM+"J/ApJS/255/6/table1"+LIMIT+100'
);

Notes

• Useful for cross-matching with published catalogs
• Catalog names follow journal citation format
• Check individual catalog documentation for column meanings