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Extended Sambandhas (9 sub-types)

Beyond the five base sambandhas, Vedic tradition catalogues nine subtler planetary relationships — dispositor chains, navamsa-rashi cross-occupation, mutual sub-dispositor sambandha, and more. These feed the materialization probability engine and the per-house influence layer.

Nine extended types

Type Strength Detected when…
navamsa_sambandha 40 Both planets conjunct in the same D9 sign.
navamsa_sign_occupation 40 Planet1's D9 sign equals planet2's rashi sign.
rashi_sign_occupation 40 Planet1's rashi sign equals planet2's D9 sign.
same_dispositor 40 Both planets share the rashi dispositor.
dispositor 30 Planet1 sits in a sign owned by planet2 (rashi).
nakshatra_dispositor 20 Planet1's nakshatra is owned by planet2.
navamsa_dispositor 20 Planet1's D9 sign is owned by planet2.
same_nakshatra_lord 20 Both planets in nakshatras owned by the same lord.
dispositor_sambandha 10 The dispositors of planet1 and planet2 share a base sambandha.

The strengths are tuned to compose with the base sambandha table — total relationships per planet can be read in one number.

GET /v1/vedic/charts/{id}/extended-sambandhas

Returns the catalogue of extended sambandhas between two planets. Query parameters p1 and p2 accept the standard planet labels (sun, moon, mars, ..., rahu, ketu).

curl -H "Authorization: Bearer $TOKEN" \
  "https://api.astrolinkers.com/v1/vedic/charts/$CHART/extended-sambandhas?p1=sun&p2=mars"

{
  "chart_id": "01HKD…",
  "planet1": "sun",
  "planet2": "mars",
  "relationships": [
    {"planet1": "sun", "planet2": "mars",
     "sambandha_type": "nakshatra_dispositor", "strength": 20.0,
     "explanation": "mars is the nakshatra-lord of sun (nakshatra Mrigashira)"},
    {"planet1": "sun", "planet2": "mars",
     "sambandha_type": "same_nakshatra_lord", "strength": 20.0,
     "explanation": "sun and mars share nakshatra-lord mars"}
  ]
}

GET /v1/vedic/charts/{id}/extended-sambandhas/{planet}

The full extended-sambandha mapping for one planet. Useful for "summarise this planet's relationships" queries.

curl -H "Authorization: Bearer $TOKEN" \
  "https://api.astrolinkers.com/v1/vedic/charts/$CHART/extended-sambandhas/jupiter"

{
  "chart_id": "01HKD…",
  "planet": "jupiter",
  "by_counterpart": {
    "sun": [
      {"planet1": "jupiter", "planet2": "sun",
       "sambandha_type": "dispositor", "strength": 30.0,
       "explanation": "sun is the rashi dispositor of jupiter (jupiter sits in leo)"}
    ],
    "moon": [
      {"planet1": "jupiter", "planet2": "moon",
       "sambandha_type": "navamsa_dispositor", "strength": 20.0,
       "explanation": "moon is the navamsa dispositor of jupiter (D9 sign cancer)"}
    ]
  }
}

How this composes with the base sambandhas

Run both endpoints and merge by (planet1, planet2) pair. The base five give the strongest classical links (60 / 50 / 40 / 35 / 30); the extended nine fill in the subtler 10..40 range. Total summed strength across both tables is a good proxy for "how tightly is this planet woven into the rest of the chart".