Western Astrology

Western Natal Chart — Tropical

Calculate a complete Western natal chart using the tropical zodiac and Swiss Ephemeris. Returns 10 planet positions (Sun through Pluto) with tropical longitudes, Placidus (or chosen) house placements, sign-level dignity (dignity, dignity_score) and full traditional essential dignities after William Lilly (essential_dignities: domicile, exaltation, triplicity by the chart's day/night sect, term, face, detriment, fall, peregrine, total), all active aspects using standard modern Western orbs, and element/modality/hemisphere statistics. House system options: placidus (default), koch, equal, whole_sign.

post/v1/western/natal

Request

  • Base URL: https://api.asterwise.com
  • URL: https://api.asterwise.com/v1/western/natal
  • Auth: HTTP bearer

Request body

locationstring nullable

City name to resolve to lat/lon/tz automatically. Example: 'Mumbai' or 'New Delhi, India'. If provided, latitude, longitude and timezone are not required.

namestring

Person name associated with the birth record

datestring required

Birth date in YYYY-MM-DD format

timestring nullable

Birth time in HH:MM 24-hour format. If omitted, the chart is cast for 06:00 local time (not a sunrise chart) and birth_time_provided is false: houses, the Ascendant, the sect and the Moon's exact degree are then approximate.

latitudenumber nullable

Latitude. Required if location not provided.

longitudenumber nullable

Longitude. Required if location not provided.

timezonestring nullable

IANA timezone. Required if location not provided (unless utc_offset is given). For dates before the zone adopted a standard time, the birthplace's local mean time (longitude / 15 hours) is used.

utc_offsetstring nullable

Optional explicit UTC offset of the birth time, as ±HH:MM or ±HH:MM:SS (e.g. '+04:51:31' for Bombay mean time). Overrides the offset timezone would give. Use it when the birth record states the offset, or for historical local times the IANA database cannot represent.

ayanamsa'lahiri' | 'raman' | 'kp' | 'tropical'

Ignored on Western endpoints: positions are always tropical (no ayanamsa). Accepted so one birth object can be sent to Vedic and Western endpoints alike.

house_system'placidus' | 'koch' | 'equal' | 'whole_sign'

House system for Western natal chart. Placidus is the modern default. Koch is the second most popular. Equal and Whole Sign are sign-based systems.

Example request

{
  "ayanamsa": "lahiri",
  "date": "1985-11-12",
  "latitude": 19.055,
  "location": "Mumbai",
  "longitude": 72.8692,
  "name": "Arjun Mehta",
  "time": "06:45",
  "timezone": "Asia/Kolkata"
}

Response

Western natal chart with tropical positions and dignities

successboolean

True if the request succeeded

messagestring

Human-readable status message

Example response

{
  "data": {
    "house_system": "placidus",
    "ascendant": {
      "sign": "Scorpio"
    },
    "mc": {
      "sign": "Scorpio"
    },
    "planets": [
      {
        "name": "Sun",
        "sign": "Scorpio",
        "dignity": "peregrine"
      }
    ]
  }
}

Changes

No recorded changes to this operation across all 2 revisions of this API.