/astronomy namespace · APlicious

Astronomy API — planet positions, eclipses, rise/set times, and sky events

Build planetarium widgets, stargazing apps, and sky-event trackers with Swiss Ephemeris precision — no local ephemeris files, no library to install. One APlicious key covers planet positions, eclipses, rise/set times, and seasonal events.

14+astronomy endpoints

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GET /api/v1/astronomy/planet-positions

const res = await fetch(
  'https://aplicious.com/api/v1/astronomy/planet-positions' +
  '?datetime=2026-09-08T12:00:00Z&lat=28.6139&lon=77.2090',
  { headers: { 'X-API-Key': 'lapi_live_••••' } }
);
const { data } = await res.json();
// { planets: [
//   { name: "Mars", longitude: 127.4, latitude: 1.2,
//     distance_au: 1.58, is_retrograde: false,
//     rise: "05:12", set: "18:44" }, ... ] }

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What's included in /astronomy

Planet positions

Ecliptic longitude, latitude, distance (AU), and right ascension/declination for all 8 planets + Moon and Sun for any datetime.

Rise & set times

Sunrise, sunset, moonrise, moonset — and rise/set for Mercury through Neptune — for any lat/lon and date.

Eclipses

GET /astronomy/eclipses?type=solar or lunar for upcoming eclipse events with dates, type (total/partial/annular), and visibility regions.

Moon phase & distance

Lunar phase (new/crescent/quarter/gibbous/full), illumination percentage, and Earth–Moon distance in km for any date.

Equinoxes & solstices

GET /astronomy/equinox-solstice?year=2026 for exact UTC timestamps of all four seasonal events.

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Frequently asked questions

Is this for Western astronomy or Vedic astrology?

This is the astronomy namespace — tropical (heliocentric/geocentric) coordinates suitable for scientific and stargazing apps. For Vedic (sidereal) positions, use /astrology or /vedic.

What coordinate system is returned?

Ecliptic longitude/latitude and equatorial RA/Dec are both returned. Distance is in AU for planets and km for the Moon.

Can I get visibility windows for all planets?

Yes — GET /astronomy/planetary-visibility?datetime=...&lat=...&lon=... returns rise/set and whether each planet is visible tonight from your location.

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