Shatabhisha nakshatra, 6°40' to 20°00' Aquarius.

Shatabhisha, Sanskrit for the hundred physicians, is the 24th of the 27 nakshatras and sits entirely inside one sign: its full 13°20' arc runs from 6°40' to 20°00' Aquarius, all four padas in fixed-air Aquarius with no boundary to cross. Rahu rules it, so a Moon here opens life inside an 18-year Rahu mahadasha, the longest first period any nakshatra can hand a chart. The presiding deity is Varuna, keeper of cosmic waters and binding oaths, and the symbol is the empty circle of a hundred stars or a hundred healers. Dhanishtha before it keeps the drumbeat of group action and Purva Bhadrapada after it carries the fierce dharmic edge; Shatabhisha between them holds the detached register of the researcher who heals through hidden channels. Sources: Brihat Parashara Hora Shastra Chapter 3, Phaladeepika Chapter 7, Sarvartha Chintamani.

Range, ruler, deity and classical attributes

Mythology and meaning

Varuna the presiding deity is the god of cosmic waters, oaths and the binding-axis. The hundred-physicians symbol reflects healing through multiple paths, often through hidden or unconventional channels. The empty-circle reflects the cosmic void from which all emerges. Shatabhisha carries the hidden-healer register: the chart owner heals through subtle or unconventional means.

The classical reading walks the presiding deity, the symbol and the ruling planet together to derive the nakshatra's full register. Shatabhisha's register is shaped by all three: the deity sets the thematic register, the symbol provides the visual-mnemonic and behavioural anchor and the ruling planet anchors the Vimshottari major-period framework and the broader chart-side reading whenever the chart owner runs the ruler's mahadasha.

What Moon in Shatabhisha reads as

Natives born with the natal Moon in Shatabhisha carry hidden-healing and unconventional-inquiry as dominant register. The chart works through subtle channels, investigates through scientific inquiry and operates with the detached register of the researcher. The Moon as the mental and emotional register absorbs the nakshatra's signature directly: the chart owner thinks, feels and habitually responds through the Shatabhisha register.

Classical professional registers commonly associated with this nakshatra include medicine especially research and pharmacology, scientific investigation and research-axis professions, technology and unconventional engineering, occult and esoteric healing, astrology and astronomical work, anything requiring detached observation of complex systems. The professional list is illustrative rather than deterministic. The nakshatra produces structural capacity; the chart owner's specific application depends on the broader chart, the dasha sequence and the natal house position of the Moon within the chart.

The four padas and per-pada navamsa signs

Each nakshatra divides into four padas of 3°20' arc each, mapping to the four navamsa signs starting from the position of the first pada. Pada-level reading qualifies the broad nakshatra register with the navamsa sign that the chart owner's Moon (or natal point) actually occupies. The four padas of Shatabhisha.

• Pada 1. Sagittarius / Jupiter: healing through wisdom, philosophical inquiry register.
• Pada 2. Capricorn / Saturn: structured research, institutional-science axis.
• Pada 3. Aquarius / Saturn: unconventional-axis healing, reform-research register.
• Pada 4. Pisces / Jupiter: spiritual healing, mystical-research axis.

The classical practice reads the pada-level register together with the natal Moon's navamsa sign for full nakshatra reading. The pada determines which navamsa sign the chart owner activates; the navamsa lord then participates in the broader chart reading as a parallel signature alongside the natal lord.

Rahu rulership and the 18-year mahadasha

A native born with the natal Moon in Shatabhisha opens life in the Rahu mahadasha. The 18-year window foregrounds Rahu's karaka register: Rahu's natural signification activates as the broad thematic frame for the opening phase of the life.

Combined with Shatabhisha's hidden-healer register, the opening Rahu mahadasha period often produces early-life unconventional-axis formation, foreign-axis healing or research engagement and the detached-investigation disposition for which this nakshatra is renowned.

The exact degree of the Moon within Shatabhisha fixes how much of the opening Rahu mahadasha remained at birth. Moon at 0° of the nakshatra inherits the full 18-year period from birth. Moon at the closing degree of the nakshatra inherits only the residual fraction before the next mahadasha begins. The classical computation reduces this to days from the precise degree of Moon within the nakshatra range.

Transit reading: when slow planets cross Shatabhisha

Beyond the natal-Moon reading, the Shatabhisha nakshatra carries reading-significance whenever slow planets transit through its 13°20' arc. Saturn at approximately 2.5 years per sign passes through Shatabhisha once every 29.5 years. Jupiter at approximately 13 months per sign passes through annually within each 12-year cycle. Rahu and Ketu at approximately 18 months per sign pass through every 18 years.

Transit Jupiter through Shatabhisha provides a benefic overlay on the nakshatra's themes for the duration of the Jupiter transit. Transit Saturn through Shatabhisha provides a structural-pressure overlay, often producing the consolidation or restructuring of the nakshatra's themes in the chart owner's life. Transit Rahu or Ketu through Shatabhisha provides an amplification or dissolution overlay depending on which node is transiting and which house the nakshatra occupies on the chart.

Computed windows, 2024 to 2040

Every pass of Saturn, Jupiter and Rahu through Shatabhisha's 13°20' span in this period. Sidereal positions from the Swiss Ephemeris with the PVRN Rao True Pushya ayanamsha and the mean node, the same engine that computes every chart on this site. Separate rows are separate passes, produced by retrograde motion.

Compatibility attributes and Ashtakoota implications

Shatabhisha carries gana classification rakshasa (the temperamental class layer, with three values: deva for divine, manushya for human, rakshasa for intense), varna classification butcher (the functional class layer), yoni classification horse (the animal-axis compatibility marker) and nadi classification vata (the Ayurvedic constitutional axis). These attributes feed Ashtakoota compatibility scoring used in classical Vedic matchmaking. The cluster documents these for reference, not as a forward-call mechanism.

Where Shatabhisha sits in the 27-step sequence

In the fixed 27-step sidereal nakshatra sequence, Shatabhisha is the 24th nakshatra. The Moon traverses one nakshatra in approximately 24 hours (the lunar daily motion of approximately 13°10' per day matched against the 13°20' nakshatra arc). The nakshatra boundaries are therefore time-sensitive at the daily and even hourly level: birth time accuracy is the prerequisite for accurate nakshatra identification.

Calibration status

The article documents the classical Shatabhisha-nakshatra reading as set out in BPHS Chapter 3 (nakshatra significations), Phaladeepika Chapter 7 and Sarvartha Chintamani. The presiding-deity reading, the symbol-interpretation, the four-pada-per-navamsa framework and the gana-varna-yoni-nadi compatibility attributes are presented as the tradition's own framework. The Tempora calibrated signature library (Note 005) does not currently include nakshatra-specific event signatures. Calibrating nakshatra placements against a labelled chart-corpus is open work.

Born under Shatabhisha: what it sets in motion

A Moon in Shatabhisha at birth opens the whole life inside the Rahu mahadasha, and Rahu runs 18 years in the Vimshottari cycle, more than any other lord grants as a first period. The fraction a chart actually receives from birth is set by how far the Moon had already moved through the nakshatra's 13°20' arc. Born at the very start of Shatabhisha, a chart inherits close to the full 18 years of Rahu. Born three-quarters of the way through, only one quarter remains: 18 × 0.25 is 4.5 years of Rahu before the 16-year Jupiter mahadasha takes over. Born halfway, 9 years of Rahu remain; born near the closing degree, a year or less.

This is why the birth nakshatra is the entry point of the entire 120-year map. The nakshatra names the first lord and the fraction names the balance, and from that single handhold the whole sequence unrolls: Rahu, then Jupiter, then Saturn and on through the cycle. Because Rahu's period is so long, a Shatabhisha birth in its early padas can spend almost two decades under the node's amplifying, boundary-dissolving register before any other lord surfaces, which classical texts read as a long opening chapter of unconventional formation and foreign-axis engagement.

This span in the 2026 to 2028 sky

Shatabhisha is pure Aquarius, so the whole nakshatra carries Rahu until 27 December 2026 while Ketu sits opposite in Leo. This is the transit that speaks to Shatabhisha's own ruler, Rahu standing on the arc it governs, which classical reading treats as a doubled emphasis on the nakshatra's hidden-healer themes for anyone with a placement here. On 27 December 2026 the nodes change signs and Rahu leaves Aquarius for Capricorn, so from that date this span holds no node at all for the rest of the window. The honest limitation is the same one that applies to every nodal reading: a node marks where attention concentrates, not what the outcome will be, and the house Shatabhisha occupies in a given chart decides what the concentration touches. Neither Jupiter nor Saturn reaches this arc in the window, since Jupiter works through Cancer and Leo and Saturn holds Pisces. The faster lights keep their schedule: the Moon crosses Shatabhisha for about a day every 27.3 days, and the Sun spends roughly a fortnight in this arc once a year in February. Purva Bhadrapada, its Aquarius neighbour, shares the same Rahu tenancy until 27 December 2026 across its first three padas.

FAQ

This article was prepared by Tempora Research as an informational piece in the Nakshatra cluster. Methodology, calibrated lift figures and reconciliation entries are documented in Tempora's research-publishing standards and reproducible against the public engine. Internal audit log maintained. This article does not constitute medical, financial, legal or professional advice. First published 2026-05-29 by Tempora Research.