Western Aspect Grid

Calculate all active aspects between any set of planetary positions. Provide a dictionary of body names to tropical ecliptic longitudes. Uses standard modern Western orbs by default: major aspects 5°, sextile 3°, minor aspects 1.5°. Custom orbs can be provided per aspect type.

Endpoint

POST /v1/western/aspects

Request parameters

Field	Type	Required	Description
positions	object	Yes	Dictionary of body name to tropical ecliptic longitude (0-360). Example: {"Sun": 229.6, "Moon": 221.8, "Mars": 189.6}
orbs	object \| null	No	Custom orbs per aspect type. If omitted, uses standard modern Western orbs: major=5°, sextile=3°, minor=1.5°

Example request

curl
Python
TypeScript

curl -X POST "https://api.asterwise.com/v1/western/aspects" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"positions":{"Sun":229.6,"Moon":221.8,"Mars":189.6}}'

import asterwise
from asterwise.api.western_astrology_api import WesternAstrologyApi
from asterwise.models.western_aspects_request import WesternAspectsRequest

configuration = asterwise.Configuration(
    host="https://api.asterwise.com",
    access_token="YOUR_API_KEY",
)

request = WesternAspectsRequest(
    positions={'Sun': 229.6, 'Moon': 221.8, 'Mars': 189.6},
)

with asterwise.ApiClient(configuration) as client:
    api = WesternAstrologyApi(client)
    result = api.western_aspects(western_aspects_request=request)
    print(result)

import { createClient, createConfig, westernAspects } from 'asterwise';

const client = createClient(createConfig({
  baseUrl: 'https://api.asterwise.com',
  headers: { Authorization: 'Bearer YOUR_API_KEY' },
}));

const result = await westernAspects({
  client,
  body: {
      "positions": {
        "Sun": 229.6,
        "Moon": 221.8,
        "Mars": 189.6
      }
  },
});

console.log(result.data);

Example response

{
  "success": true,
  "message": "success",
  "data": {
    "aspects": [],
    "orbs_used": {
      "conjunction": 5.0,
      "opposition": 5.0,
      "trine": 5.0,
      "square": 5.0,
      "sextile": 3.0,
      "semisextile": 1.5,
      "semisquare": 1.5,
      "sesquiquadrate": 1.5,
      "quincunx": 1.5
    },
    "body_count": 3,
    "aspect_count": 0
  }
}

Response fields

Field	Type	Description
success	boolean	True if the request succeeded
message	string	Human-readable status message
data	object
data.aspects	array[object]	All active aspects between the provided bodies
data.aspects[].planet_a	string
data.aspects[].planet_b	string
data.aspects[].type	string	Aspect type: conjunction \| opposition \| trine \| square \| sextile \| semisextile \| semisquare \| sesquiquadrate \| quincunx
data.aspects[].exact_angle	number	Actual angular distance between planets
data.aspects[].orb	number	Difference from exact aspect angle (always positive)
data.aspects[].is_applying	boolean	True if the faster planet is moving toward exact aspect (orb decreasing).
data.orbs_used	object	Orb values used for this calculation
data.body_count	integer	Number of bodies provided
data.aspect_count	integer	Number of aspects found

Errors

Code	Description	Reference
authentication_failed	Missing or invalid API key.	authentication_failed
ephemeris_unavailable	Upstream ephemeris service error.	ephemeris_unavailable
insufficient_tier	API key tier does not include this endpoint.	insufficient_tier
internal_error	Unexpected server error.	internal_error
ip_rate_limit_exceeded	Too many requests in a short window.	ip_rate_limit_exceeded
payload_too_large	Request body exceeds the size limit.	payload_too_large
resource_not_found	Referenced resource was not found.	resource_not_found
validation_error	Request body failed schema validation.	validation_error

Endpoint​

Request parameters​

Example request​

Example response​

Response fields​

Errors​

Related endpoints​