Vedic partner analysis: Ashtakoota, nakshatras and what they really say

Where this comes from and where it stands today

Vedic or Indian astrology, Jyotisha, is a tradition of its own, with its own calculation, its own vocabulary and its own history. For judging a marriage it developed a procedure called Guna Milan in northern India and Ashtakoota generally: eight areas derived from the lunar positions of both people, worth at most 36 points together.

In many families the procedure is still part of arranging a marriage. It is not read there as psychology but as a check of whether two lives fit by inherited measure. Whoever holds such a report usually sees only the total — and that is exactly the problem this guide addresses: the eight areas say different things, and only the individual values are readable.

Western synastry asks different questions. It compares two complete charts through aspects and house contacts and describes what comes into motion between two people. Ashtakoota compares no aspects at all: it sorts two lunar positions into tables. The two procedures are not two dialects of one language but two languages — and they cannot sensibly be added up into one overall grade.

Sidereal versus tropical: the same sky, two zero points

The most striking difference sits in the very first step. Western astrology works tropically: 0° Aries is where the Sun stands at the spring equinox. That point drifts — through the precession of the earth's axis it moves back about one degree every 72 years. The tropical zodiac is therefore tied to the course of the year, not to the stars.

Vedic astrology works sidereally: its zero point is fixed to the stars. The same planet therefore gets a different longitude and often a different sign. In 2026 the two zodiacs sit a good 24 degrees apart. Someone with a Sun in late Leo in the western reckoning often has a Sun in Cancer in the sidereal one. That is neither a contradiction nor an error on either side — they are two reference frames, each consistent within itself.

In practice this means a vedic result cannot be compared with a western one, and it does not help to look for your familiar signs in it. Reading a vedic analysis means reading a different chart.

The ayanamsha: the number that shifts everything

The distance between the tropical and the sidereal zero point is called the ayanamsha. It grows by roughly 50 arcseconds a year. Which ayanamsha is used decides every sign boundary — and with it every rashi, every nakshatra and every koota point.

Several definitions exist. The most widespread, and the one used here, is Lahiri, also called Chitrapaksha, the standard of the Indian state ephemeris Rashtriya Panchang. It is defined through a fixed reference moment: in 1900 it was 22°27′37.7″, which gives 23°51′11″ for 1 January 2000. Other schools calculate with Raman, Krishnamurti or a variant aligned exactly to Spica; the differences are in the range of arcminutes.

Arcminutes sound like very little, and usually they are. But when the Moon sits close to a nakshatra boundary, a different ayanamsha can place it in the next lunar mansion — changing Nadi, Gana, Yoni and Tara, which is up to 21 of the 36 points. That is why the ayanamsha used belongs with every serious result, and why this calculation states it explicitly, with its numeric value.

Nakshatras: the 27 lunar mansions

In vedic astrology the sidereal circle is divided not only into twelve signs but additionally into 27 nakshatras of 13°20′ each. Every nakshatra is divided again into four padas of 3°20′. What matters is almost always the position of the Moon: the nakshatra the Moon occupied at birth is called the Janma Nakshatra and carries most of the Ashtakoota calculation.

Every nakshatra brings three properties that the partner analysis needs: an animal symbol (yoni), a temperament group (gana) and a constitution (nadi). These assignments are inherited table values, not astronomical quantities — they are read off, not computed.

Because the Moon travels roughly 13 degrees a day, it changes nakshatra about once a day and pada every six hours. An imprecise birth time therefore hits a vedic partner analysis harder than a western synastry: there the houses shift, here the foundation shifts.

Ashtakoota: the eight areas and their weights

The eight kootas have fixed maxima, and the weighting is anything but even: Varna 1, Vashya 2, Dina (also Tara) 3, Yoni 4, Graha Maitri 5, Gana 6, Bhakoot (also Rashi) 7 and Nadi 8 — 36 together.

Varna sorts the moon signs by their element into a historical rank. Vashya splits them into five groups and asks about approachability. Dina counts the distance between the two nakshatras in both directions; three of the nine positions count as unfavourable. Yoni compares the animal symbols and describes physical attraction. Graha Maitri checks the rulers of the two moon signs against the classical friendship table. Gana compares the temperament groups. Bhakoot looks only at the distance between the moon signs: the positions 2/12, 5/9 and 6/8 give no points. Nadi compares the constitutions — different gives all eight points, the same gives none.

Two things stand out. First, Nadi and Bhakoot together make 15 of the 36 points, and both are all-or-nothing decisions. A total can therefore drop by 15 points without anything changing in the other six areas. Second, four of the eight tables are not symmetrical. Varna, Vashya, Yoni and Gana read one of the two sides first, and the same two birth charts give a different score depending on the order. That is a property of the historical tables and not a statement about the two people — which is why this calculation never derives the order from names or gender, but asks, or shows both directions.

Manglik, or Kuja Dosha

Besides the eight areas the tradition examines the position of Mars. If it stands in house 1, 2, 4, 7, 8 or 12 — counted from the ascendant, from the Moon or from Venus — this is called Manglik or Kuja Dosha. It is read as a theme of friction, impatience and heat that wants attention.

What popular calculators usually omit: the classical texts name numerous conditions under which the finding falls away. Mars in its own sign or exalted counts as strong rather than burdensome; particular signs in particular houses are explicitly exempt; Jupiter aspecting Mars, or Venus in the same sign, sets it aside; and if both people carry the finding, it counts as balanced — Dosha Samyam.

Manglik is not a forecast. It points out that an energy is in play which wants direction. Any presentation that turns it into a warning about a person or a prediction about a marriage goes beyond what this system supports — and in practice it is mostly a sales argument for remedies.

D1 and D9: two charts, not one

The basic chart is called D1 or Rashi: the sidereal signs of the seven classical grahas — Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn — plus Rahu and Ketu, the lunar nodes. Uranus, Neptune and Pluto do not appear; this tradition does not provide for them. The houses are whole sign: the ascendant's sign is entirely the first house, the next sign entirely the second. There are no cusps in degrees and no choice between house systems.

Beside it stands D9, the Navamsa. Every sign is divided into nine parts of 3°20′, and each part is assigned a sign by a fixed rule: movable signs start from themselves, fixed signs from the ninth, dual signs from the fifth. For marriage the Navamsa is the second principal chart — it is read as the inner side of a connection, as what shows itself after the first encounter.

D1 and D9 are to be read separately. A planet can sit comfortably in D1 and under pressure in D9, or the other way round. Merging the two into a single statement removes exactly what the procedure is built for.

For marriage a few points are examined individually on top of that: the sidereal ascendant, the seventh house, its ruler and where that ruler stands, plus Venus, Jupiter, Mars and the Moon — each with its navamsa sign.

Limits, schools, and what a score cannot do

There is no single Ashtakoota table. Northern and southern Indian schools differ, individual teaching lineages set their own values, and even in the Vashya koota some sources omit an assignment that others supply. Two calculators can therefore produce different totals from the same birth data without either of them calculating wrongly. Anyone who takes a number seriously has to know which rule set produced it — which is why the rule set appears with a version number in every result here.

Common rules of thumb such as "18 points and up is fine" are convention, not doctrine. They hide what the individual values say: 18 points from seven good areas and a Nadi at zero mean something entirely different from 18 points from eight mediocre ones. The total is the least interesting part of the result.

And the decisive point: whether a relationship holds depends on behaviour, reliability, circumstances and decisions. None of that is in a chart. Astrological patterns must never be used to explain or excuse control, boundary violations or harmful behaviour — and a score is no reason to reject a person.

The procedure becomes useful where both people know it and use it as a prompt for conversation: a low Gana value is an invitation to talk about differences in temperament, not a diagnosis.

Data quality: the birth time

Without an accurate birth time the vedic analysis stays incomplete. The ascendant, the whole-sign houses and the Manglik reference to the lagna depend on it directly. When it is missing, midnight is usually assumed — and then the result describes a sky that shares only the date with the birth.

The Moon is sensitive too: at 13 degrees a day one hour moves it by a good half degree, and near a nakshatra boundary minutes are enough. An honest gap is therefore worth more than invented precision — and a result that points out an uncertain time is the better result.

Try it with your own chart

Calculate your free chart first, then use this reading order as a guide.

Sources and further reading

• Swiss Ephemeris – programming interface (sidereal modes, ayanamsha)
• Rashtriya Panchang, Positional Astronomy Centre Kolkata – explanations
• Saravali – Asta Koota: the tables of the eight kootas (CC BY-SA 4.0)