Nakshatra Cluster · Ruling Planet

Ketu-ruled nakshatras, the 7-year group.

Ketu rules three of the 27 nakshatras: Ashwini, Magha and Moola. When the natal Moon falls in any of them, the chart owner opens life in the 7-year Ketu mahadasha. The macro register is Ketu's shared karaka signature, modulated by each nakshatra's deity, sign and pada.

The three nakshatras at a glance

Nakshatra	Deity	Range	Symbol
Ashwini	Ashwini Kumars	0°00' to 13°20' Aries	horse's head
Magha	Pitris	0°00' to 13°20' Leo	throne, royal-court or palanquin
Moola	Nirriti	0°00' to 13°20' Sagittarius	bunch of roots

What Ketu rules and how that shapes the group

Ketu-ruled nakshatras carry the dissolution-of-form register: spiritual-axis disposition, the chart owner's relationship to past-life patterns, the search for essence beneath surface registers and the dissolution-renewal cycle. Ketu is the karaka for dissolution, moksha (liberation), the headless register, past-life karmas and the detached register. The three Ketu-ruled nakshatras all sit at the 0°00'-13°20' range of fire signs (Aries, Leo, Sagittarius) at the very beginning of each fire-sign arc, giving them a distinctive dawn-axis register: initiating action emerging from dissolution.

How the three members differ

Ashwini

Ashwini runs 0°00' to 13°20' Aries. The presiding deity is Ashwini Kumars, the symbol is the horse's head and the register is swift action and pioneering initiative. Read the full reading at Ashwini nakshatra.

Magha

Magha runs 0°00' to 13°20' Leo. The presiding deity is Pitris, the symbol is the throne, royal-court or palanquin and the register is ancestral royal authority. Read the full reading at Magha nakshatra.

Moola

Moola runs 0°00' to 13°20' Sagittarius. The presiding deity is Nirriti, the symbol is the bunch of roots and the register is root-axis seeking and fundamental investigation. Read the full reading at Moola nakshatra.

Moon in any of these three opens the Ketu mahadasha

The 7-year Ketu mahadasha activates dissolution, search-for-essence and spiritual-axis themes. When the natal Moon falls in Ashwini, Magha or Moola, the opening Ketu mahadasha foregrounds the chart's relationship to pioneering-dissolution (Ashwini), ancestral-axis dissolution (Magha) or root-axis investigation (Moola). All three nakshatras sit at the dawn-position of their respective fire signs, classically associated with new-cycle initiation through dissolution of inherited register.

Sub-period activation through the Ketu period

Inside the 7-year Ketu mahadasha, the Vimshottari antardasha sequence runs through all 9 planets in proportion to their mahadasha lengths. Each antardasha activates a different karaka pairing with the Ketu mahalord. Sub-periods of friend-planets to Ketu read constructively, sub-periods of enemy-planets read more challenging. The full antardasha structure is covered in the Ketu mahadasha overview.

What this group does not predict

Ruler-group membership reads the macro register of the Ketu mahadasha and the shared Ketu karaka signature. It does not generate forward calls by itself. Calibration is by chart and signature class, not by ruler group. The personal-chart reading depends on the Moon's specific nakshatra (Krittika reads differently from Uttara Ashadha), the Moon's pada, the natal house of the Moon, the dispositor's strength and the running transit picture. The framework is explicit about this scope limit.

FAQ

How long is the Ketu mahadasha in the Vimshottari sequence?

The Ketu mahadasha runs 7 years. It activates when the natal Moon falls in any of the three Ketu-ruled nakshatras: Ashwini, Magha or Moola. The exact degree of the Moon inside the nakshatra fixes how much of the Ketu mahadasha remains at birth.

What is the shared register of the Ketu-ruled nakshatras?

All three carry Ketu's karaka register at the macro level. They then split into distinct readings by sign placement, presiding deity and pada structure. What stays constant is the 7-year mahadasha length and the underlying Ketu register.

How do the three Ketu-ruled nakshatras differ?

Ashwini reads as swift action and pioneering initiative. Magha reads as ancestral royal authority. Moola reads as root-axis seeking and fundamental investigation. All three carry Ketu's shared register but the deity and sign placement determine which dimension foregrounds in a given chart.

Does the Ketu-ruled group share a calibrated firing pattern on the corpus?

The three nakshatras share the Ketu mahadasha length but do not share calibrated forward-call windows automatically. Calibration is by chart and signature class, not by ruler group. The individual nakshatra readings carry calibrated context where it exists.

Where does the Ketu mahadasha sit in the 120-year cycle?

The Vimshottari mahadasha sequence runs Ketu 7, Venus 20, Sun 6, Moon 10, Mars 7, Rahu 18, Jupiter 16, Saturn 19, Mercury 17. total 120 years. The Ketu mahadasha enters the sequence whenever the previous mahadasha closes. The entry point on a personal chart depends entirely on the natal Moon nakshatra and degree.