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The nine grahas, twelve rāśis and twenty-seven nakṣatras as a lens over the whole map — where the sky attaches to the body, the elements and the tattva spine.
This lens lights 26 points on the shared cross-section rather than replacing it. Every record below names its source, and carries one of three tags: classical where a named text can be cited, later addition where an idea is modern and is said to be modern, and sources differ where the tradition itself disagrees.
Sagittarius is dual fire under Jupiter — aim, and the conviction that there is something worth aiming at. It reads for teaching, law, long journeys, and the search for a frame large enough to hold a life.
Dhanu is dvisvabhāva, dual. Ketu is sometimes given exaltation here, though the authorities differ. It carries the thighs in the Kālapuruṣa, and as the ninth rāśi it is the natural ninth house of dharma and the father. Jupiter owns it in its fiery mode, with Pisces the same graha in water — outward-directed conviction against inward-directed dissolution.
Source: BPHS Ch. 3–4; galactic-centre ayanāṃśas: twentieth-century, post-classical
Virgo is dual earth under Mercury — discrimination applied to material things. It reads for analysis, service, health as daily maintenance, and the capacity to notice what is slightly wrong. Its symbol is a maiden holding grain, which the tradition reads as discernment rather than innocence.
Kanyā is dvisvabhāva, and is the only rāśi where a graha is exalted in a sign it also rules: Mercury, at 15°. Venus is debilitated here at 27°. It carries the abdomen in the Kālapuruṣa, and as the sixth rāśi it is the natural sixth house, which attaches disease, service and adversity to it. Mercury's mūlatrikoṇa — a third grade of dignity, a favoured arc within a graha's own sign — also falls in Virgo, at a different span from the exaltation degree.
Source: BPHS Ch. 3 (exaltation, mūlatrikoṇa), Ch. 4
Cancer is movable water, the Moon's only sign. It reads for shelter, memory, the mother and the instinct to enclose what matters. The chest belongs here in the Kālapuruṣa, and the tradition regards holding and protecting as the same gesture.
Karka is cara, movable, and Jupiter is exalted here at 5°. It is the only rāśi owned by the Moon, and the only one owned by a luminary besides Leo — the Sun and Moon take one sign each while the five tāra grahas take two apiece, which is the structural reason the luminaries behave differently throughout the system.
Source: BPHS Ch. 3–4; comparative: Hellenistic rulership order
Aquarius is fixed air under Saturn — the sign of systems and of distance from them. It reads for networks, gains, collective concerns and a temperament that regards the individual case from some way above it. Its symbol is a water-bearer, a vessel rather than the water.
Kumbha is sthira, fixed. No graha is exalted here. It carries the calves and ankles in the Kālapuruṣa, and as the eleventh rāśi it is the natural eleventh house of gains and networks. Saturn owns it in the airy mode, which the tradition reads as the same discipline turned from material building toward abstraction and idea.
Source: BPHS Ch. 3–4; outer-planet rulerships: Western, post-1781, not adopted in Jyotiṣa
Capricorn is movable earth under Saturn — ambition with a long horizon. It reads for structure, endurance, institutional standing and the willingness to accept slowness as the price of permanence.
Makara is cara, movable, and Mars is exalted here at 28° while Jupiter is debilitated at 5°. It carries the knees in the Kālapuruṣa, and as the tenth rāśi it is the natural tenth house of action and public standing. Saturn owns it in earth, with Aquarius the same graha in air — endurance turned toward building against endurance turned toward abstraction.
Source: BPHS Ch. 3–4; upachaya classification
Aries is the zodiac's opening — cardinal fire, ruled by Mars, and read for initiative in its rawest form. The classical descriptions favour beginning over finishing, and the tradition is candid that these are different talents.
Meṣa is a movable sign, and in BPHS Ch. 4 it is the head of the Kālapuruṣa, the zodiac imagined as a body running head to foot across the twelve rāśis. The Sun is exalted here at 10°, Saturn debilitated at 20°. Mars owns it, which makes Aries the sign where Mars is at home rather than merely strong.
Source: BPHS Ch. 4; Bṛhat Jātaka Ch. 1 [BPHS references follow the 97-chapter Santhanam recension]
Gemini is dual air under Mercury — the sign of exchange, pairing and the traffic between things. Its symbol is a couple, and the tradition reads it for communication, hands, and the ability to hold two positions without distress.
Mithuna is dvisvabhāva, dual or mutable, the third of the three modes alongside movable and fixed. It carries the arms and shoulders in the Kālapuruṣa. Mercury owns it in the airy mode; Virgo is the same graha in earth, and is also where Mercury is exalted — the only graha exalted in a sign it owns.
Source: BPHS Ch. 4, Ch. 26 (dṛṣṭi); Jaimini Sūtra (rāśi dṛṣṭi)
Pisces is dual water under Jupiter — the closing sign, and the one the tradition associates with dissolution rather than conclusion. It reads for imagination, retreat, compassion and release, and it carries the feet in the Kālapuruṣa.
Mīna is dvisvabhāva, dual, and Venus is exalted here at 27° while Mercury is debilitated at 15° — the same degree at which Mercury is exalted in Virgo, exactly opposite. As the twelfth rāśi it is the natural twelfth house, which attaches loss, foreign places, isolation and mokṣa to it. Its symbol is two fish, conventionally swimming in opposite directions.
Source: BPHS Ch. 3–4 (Kālapuruṣa); developmental reading: interpretive, modern presentation
Leo is fixed fire, the Sun's own and only sign. It reads for authority, display, the heart of a matter and the willingness to be seen. The tradition regards its confidence as structural rather than boastful — the Sun does not perform light.
Siṃha is sthira, fixed. No graha is exalted in Leo, which is unusual and worth noticing: of the twelve rāśis, Leo and Scorpio and Aquarius carry no exaltation among the seven. The stomach belongs here in the Kālapuruṣa. As the fifth rāśi it is the natural fifth house, which is why children, intelligence and pūrva puṇya attach to it.
Source: BPHS Ch. 3 (exaltation degrees); comparative: Hellenistic exaltations
The twelve thirty-degree divisions the grahas move through, each with an element, a mode and an owning graha.
The rāśis are grouped in fours by element — fire, earth, air, water — and in threes by mode. Every graha’s reading is conditioned by the rāśi it stands in and by the graha that owns that rāśi.
Source: BPHS Ch. 3–4; Yavanajātaka; comparative: Hellenistic triplicity scheme
Twenty-seven lunar mansions of 13°20′ each — the Moon’s daily resting-places around the circle.
The two oldest lists disagree on the count: Taittirīya Saṃhitā 4.4.10 gives twenty-seven, while Atharvaveda 19.7 gives twenty-eight, including Abhijit. Later Jyotiṣa settles on twenty-seven, and Abhijit survives as an intercalary mansion used in muhūrta but not in the daśā reckoning. Each nakṣatra has an owning graha, and that ownership is what generates the Viṃśottarī daśā: the sequence of a life’s periods begins from whichever nakṣatra the Moon occupied at birth.
Source: Taittirīya Saṃhitā 4.4.10 (27 mansions); Atharvaveda 19.7 (28, with Abhijit); BPHS; Sūrya Siddhānta
Libra is movable air under Venus — the sign of weighing. It reads for partnership, trade, proportion and the effort of holding two things in balance. It is the only rāśi whose symbol is an object rather than a creature or a person.
Tulā is cara, movable, and Saturn is exalted here at 20° while the Sun is debilitated at 10°. That pairing is doctrinally loaded: the graha of constraint is at its best in the sign where the graha of self is at its weakest. It carries the lower abdomen in the Kālapuruṣa, and as the seventh rāśi it is the natural seventh house of partnership.
Source: BPHS Ch. 3, Ch. 39 (nīcabhaṅga) — number not confirmed against a critical edition, Ch. 4
Scorpio is fixed water under Mars — depth held under pressure. It reads for what is hidden, researched, inherited or survived, and the tradition associates it with penetration in both the investigative and the destructive sense.
Vṛścika is sthira, fixed, and the Moon is debilitated here at 3° — exactly opposite its exaltation in Taurus. No graha is exalted in Scorpio. It carries the generative organs in the Kālapuruṣa, and as the eighth rāśi it is the natural eighth house, which attaches longevity, the occult and sudden reversal to it.
Source: BPHS Ch. 3–4; Ketu co-rulership: living-tradition convention, not BPHS
Taurus is fixed earth under Venus — the sign of holding rather than acquiring. It reads for what a person keeps, values, and is unwilling to be hurried out of. The face, throat and voice belong here in the Kālapuruṣa scheme.
Vṛṣabha is sthira, fixed, and the Moon is exalted here at 3°. It is the second rāśi and therefore the natural second house of the zodiac, which is why wealth, food and speech attach to it even in charts where the second house is elsewhere. Venus owns it in its earthy rather than its airy mode — the same graha, a different register.
Source: BPHS Ch. 3 (exaltations), Ch. 4
Mercury is the faculty that handles symbols — speech, calculation, commerce, learning, wit. It is the most impressionable of the grahas: classical texts describe it as taking the character of whatever it sits with, which makes it less a fixed quality than a multiplier of its company.
Mercury rules Gemini and Virgo, and is the only graha exalted in a sign it also owns, at 15° Virgo. Rajas by guṇa. BPHS 3.31 gives it skin, tvak — the boundary organ, the surface at which inside and outside negotiate, which suits a graha whose whole business is exchange. It never travels far from the Sun, and so is combust more often than any other graha (BPHS Ch. 25).
Source: BPHS Ch. 3, 3.31, the graha-bala chapters (combustion — chapter not confirmed); Bṛhat Jātaka [BPHS references follow the 97-chapter Santhanam recension]
The Moon is the mind — manaḥkāraka, the significator of thought and feeling as they actually move, rather than as the self would prefer them to. It carries the mother, the public, and everything in a life that has a tide to it. It is the fastest of the grahas and the most changed by company.
It rules Cancer, is exalted at 3° Taurus, and is sattva by guṇa. BPHS 3.31 gives it blood, rakta. Its structural importance is out of proportion to its dignity, because the Moon's position sets the entire timeline: Vimśottarī daśā is reckoned from the nakṣatra the Moon occupies at birth, and the fraction of that nakṣatra already traversed fixes how much of the first period has elapsed (BPHS Ch. 46). Every date the system will ever produce descends from that one measurement.
Source: BPHS Ch. 3, 3.31 (dhātu), Ch. 46 (Vimśottarī) | element assignment: practitioner extension — not given a tattva by BPHS Ch. 3 v. 20, which assigns only the five grahas from Bhauma onward [BPHS references follow the 97-chapter Santhanam recension]
Jupiter is expansion and the sanction to expand — wisdom, teachers, children, wealth, and the sense that a life has a direction it is permitted to take. Classical texts treat it as the great benefic, though the same expansive quality is what makes it capable of excess.
Jupiter rules Sagittarius and Pisces and is exalted at 5° Cancer. Sattva by guṇa. BPHS 3.31 gives it fat, medas — the tissue of reserve and lubrication, which reads as expansion made physical: the body's stored surplus. It aspects the fifth and ninth in addition to the seventh, which is why a well-placed Jupiter is said to reach the trines, the houses of dharma and of the mind.
Source: BPHS Ch. 3, verse 20 (agni-bhūmi-nabhas-toya-vāyavaḥ — the tattvas of the five grahas from Bhauma onward); kāraka doctrine, BPHS bhāva chapters (Ch. 12–23) [BPHS references follow the 97-chapter Santhanam recension]
Ketu is the other crossing point, opposite Rāhu, and is read as its inverse: not appetite but its exhaustion. It carries detachment, loss, and mastery of a kind that arrives already finished — the skill you seem to have had before you learned it, and the desire that fell away before you decided to give it up.
Like Rāhu it is a shadow, always retrograde, always exactly 180° away. It has no sign lordship and no dhātu in BPHS. Its Vimśottarī period is seven years, the shortest after Ketu's own position in the cycle would suggest. It is conventionally read as behaving like Mars, and as delivering the results of whichever graha owns the sign it sits in — a rule that makes Ketu unusually dependent on context.
Source: BPHS Ch. 3, Ch. 46 — number not confirmed against a critical edition; mokṣakāraka: commentarial and modern, not BPHS | element assignment: practitioner extension — not given a tattva by BPHS Ch. 3 v. 20, which assigns only the five grahas from Bhauma onward [BPHS references follow the 97-chapter Santhanam recension]
Mars is force applied — courage, appetite, the willingness to cut. It carries younger siblings, land, and conflict of every kind, including the productive kind. The classical reading is not that Mars is bad but that it is undiluted, and undiluted things need somewhere to go.
Mars rules two signs, Aries and Scorpio, and is exalted at 28° Capricorn. Tamas by guṇa. BPHS 3.31 gives it marrow, majjā — the innermost tissue, which is a more interesting assignment than the popular one, since it places Mars not at the surface where its reputation lives but at the very core of the body. Its aspects are among the special dṛṣṭis: beyond the seventh that every graha casts, Mars also aspects the fourth and the eighth from itself.
Source: BPHS Ch. 3, 3.31, Ch. 26 (dṛṣṭi); Bṛhat Jātaka; Jaimini Sūtra [BPHS references follow the 97-chapter Santhanam recension]
Rāhu is not a body. It is one of the two points where the Moon's path crosses the Sun's, and it is where eclipses happen. The tradition reads it as appetite without a stopping condition — obsession, the foreign, the sudden rise that arrives without the preparation that would have made it survivable.
Rāhu is a chāyā graha, a shadow, and always moves retrograde, exactly opposite Ketu. Because it is a point rather than an object, several things other grahas have simply do not apply: BPHS assigns it no sign lordship and no dhātu, since the list at 3.31 covers seven bodies and Rāhu is not among them. It takes an eighteen-year Vimśottarī period, and is generally read through the sign it occupies and the graha that owns it.
Source: BPHS Ch. 3 (chāyā grahas), Ch. 46 — number not confirmed against a critical edition; exaltation and co-rulership: post-classical, authority-dependent | element assignment: practitioner extension — not given a tattva by BPHS Ch. 3 v. 20, which assigns only the five grahas from Bhauma onward [BPHS references follow the 97-chapter Santhanam recension]
The Sun is the self — not the personality but the thing that persists underneath it. Jyotiṣa reads it for vitality, authority, the father, and the capacity to be a centre rather than an orbit. When it is strong a life has a spine; when it is afflicted the person tends to borrow one.
BPHS gives the Sun lordship of a single sign, Leo, and exaltation at 10° Aries. Sattva by guṇa. Its tissue is bone — asthi — the body's frame and the last part of it to decay. Its nature is royal, and the classical texts mean that fairly literally: it does not share a throne, and it burns what comes too close. That last property is not a metaphor but a computation, the combustion rules of BPHS Ch. 25, under which a graha within a stated arc of the Sun is treated as consumed.
Source: BPHS Ch. 3 (graha natures), 3.31 (dhātu), the graha-bala chapters (combustion — chapter not confirmed); Jaimini Sūtra (chara kārakas) | element assignment: practitioner extension — not given a tattva by BPHS Ch. 3 v. 20, which assigns only the five grahas from Bhauma onward [BPHS references follow the 97-chapter Santhanam recension]
Nine: Sūrya, Candra, Maṅgala, Budha, Guru, Śukra, Śani, Rāhu, Ketu. Graha means seizer, not planet — two of the nine are the Moon’s nodes, which are points where orbits cross and not bodies at all.
BPHS Chapter 3 does not describe the grahas by what they predict. It describes them by what they *are like*: a tattva, a guṇa, a caste, a deity, a colour, a metal, a direction, a season, a bodily tissue, a taste. The chapter is a correspondence table, and the predictive apparatus is built on top of it in later chapters.
Source: BPHS Ch. 3 (Graha-guṇa-svarūpa); Bṛhat Jātaka 2; Sārāvalī 4 — number not confirmed against a critical edition [BPHS references follow the 97-chapter Santhanam recension]
Saturn is time as it is actually experienced — slowly, and mostly as constraint. It carries discipline, labour, ageing, sorrow and longevity, which the tradition regards as the same subject viewed from different distances. It is the slowest graha, and almost everything attributed to it follows from that one fact.
Saturn rules Capricorn and Aquarius and is exalted at 20° Libra. Tamas by guṇa. BPHS 3.31 gives it muscle and sinew — snāyu — the tissue that holds structure under sustained load. It aspects the third and tenth in addition to the seventh. Its transit over the natal Moon and the signs flanking it is the seven-and-a-half-year period known as sāḍe sātī, computed here from actual Saturn positions rather than by the mean-motion shortcut.
Source: BPHS Ch. 3, 3.31, Ch. 26 (dṛṣṭi); sāḍe sātī by transit [BPHS references follow the 97-chapter Santhanam recension]
Venus is the capacity for pleasure and for partnership — beauty, art, the spouse, and the appetite that makes any of it worth having. It is treated as a benefic, though the tradition is candid that what it grants is enjoyment rather than virtue, and does not pretend those are the same.
Venus rules Taurus and Libra and is exalted at 27° Pisces. Rajas by guṇa. BPHS 3.31 gives it śukra — the reproductive essence — and this is the one case where the tissue and the graha share a name outright, which is why the correspondence is the least disputed of the seven. Venus also carries the longest Vimśottarī period at twenty years, so a Venus daśā covers a larger share of a life than any other.
Source: BPHS Ch. 3, 3.31, Ch. 46 — number not confirmed against a critical edition; Caraka Saṃhitā (sapta-dhātu) [BPHS references follow the 97-chapter Santhanam recension]
Nine grahas, nine quarters: Sūrya east, Śukra southeast, Maṅgala south, Rāhu southwest, Śani west, Candra northwest, Budha north, Guru northeast, Ketu the centre.
The arrangement is the one used when the nine are installed for worship — a square with the Sun at the centre in some recensions and in the eastern quarter in others, which is the commonest variation between traditions.
Source: Navagraha maṇḍala as used in pratiṣṭhā and navagraha-śānti ritual; Bṛhat Saṃhitā on directional attribution; Vāstu texts on the dik-pālas
BPHS 3.31 gives one bodily tissue to each of the seven grahas: asthi/bone to Sūrya, rakta/blood to Candra, majjā/marrow to Maṅgala, tvak/skin to Budha, vasā/fat to Guru, vīrya/semen to Śukra, snāyu/sinew to Śani.
Set that beside Āyurveda’s sapta-dhātu — rasa, rakta, māṃsa, medas, asthi, majjā, śukra — and the overlap is smaller than the popular translations suggest. Four match outright: bone, blood, marrow and semen. One is near but not identical — BPHS says vasā, the fat of muscle, where Āyurveda says medas. And two fall outside the sapta-dhātu altogether: tvak, skin, and snāyu, sinew. Conversely Āyurveda’s rasa and māṃsa have no place in the BPHS list at all.
Source: BPHS Ch. 3 v. 31 [97-chapter Santhanam recension]; contrast: Caraka Saṃhitā and Suśruta Saṃhitā on the sapta-dhātu
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