Journal · Almanac
The 27 nakshatras: the Moon’s mansions, and the one you were born in
Twenty-seven divisions of the sky, each with a planetary lord, and why the one holding your Moon at birth times your life.
The nakshatras are 27 equal divisions of the zodiac, each 13 degrees and 20 minutes wide, named for the star groups along the Moon’s path. The Moon passes through roughly one each day. The nakshatra it occupied when you were born, your birth star, sets the order and timing of every planetary season in your life.
What is a nakshatra?
Jyotish divides the circle of the sky in two ways. The twelve signs cut it into sections of 30 degrees each, while the nakshatras cut the same circle into 27 narrower sections. Each sign therefore holds two and a quarter nakshatras, and nine of the 27 straddle the border between two signs.
The English name for them, lunar mansions, comes from the Moon’s rhythm. The Moon circles the zodiac in about four weeks, so it lodges in each mansion for roughly a day before it moves on to the next.
The names come from the stars themselves. Krittika is the cluster known as the Pleiades. Mrigashira belongs to Orion, Magha to the constellation of Leo, and Jyeshtha to Scorpius. Each name points to a real patch of sky that the Moon crosses every month.
Which planet rules each nakshatra?
Every nakshatra belongs to one of the nine planets. The lords follow a fixed order that begins at the first degree of Aries and repeats three times around the zodiac: Ketu, Venus, Sun, Moon, Mars, Rahu, Jupiter, Saturn and Mercury. That gives each planet three mansions, spaced evenly around the sky.
- Ketu: Ashwini, Magha and Mula
- Venus: Bharani, Purva Phalguni and Purva Ashadha
- Sun: Krittika, Uttara Phalguni and Uttara Ashadha
- Moon: Rohini, Hasta and Shravana
- Mars: Mrigashira, Chitra and Dhanishtha
- Rahu: Ardra, Swati and Shatabhisha
- Jupiter: Punarvasu, Vishakha and Purva Bhadrapada
- Saturn: Pushya, Anuradha and Uttara Bhadrapada
- Mercury: Ashlesha, Jyeshtha and Revati
The geometry is exact. Ketu’s three mansions each open a fire sign, at the first degree of Aries, Leo and Sagittarius. Mercury’s three each close a water sign, at the last degree of Cancer, Scorpio and Pisces.
Why does your birth nakshatra matter?
The same nine planets, in the same order, rule the seasons of a life. Jyotish calls this cycle Vimshottari dasha, and it runs 120 years: Ketu 7 years, Venus 20, Sun 6, Moon 10, Mars 7, Rahu 18, Jupiter 16, Saturn 19 and Mercury 17.
Your birth nakshatra decides where in that cycle you begin. The lord of the mansion holding your Moon rules your first season. The distance the Moon had already traveled through that mansion determines how much of the season was used up before you arrived.
Take the sample chart used across this site, born March 14, 1986. The Moon sat in Bharani, a Venus mansion, about a sixth of the way through. Life therefore began in a Venus season with about sixteen and a half years still to run, and every season after it follows in sequence.
The seasons of a life walks through that chart and its later seasons in full.
Why does birth time matter so much here?
The Moon is the fastest-moving body in the chart, crossing roughly one mansion every day. A few hours change how far through the mansion it sits, and that shifts the start of every season after it by months or years. If the Moon was near the edge of a mansion, a few hours can change the mansion itself.
That is why two people born on the same day can begin life in different seasons. It is also why every personal reading asks for your birth time as exactly as you can find it.
How does Star & Root use the nakshatras?
Many traditions attach a deity, a symbol and a temperament to each mansion, and that mythology is genuinely rich. In a Star & Root personal reading, the birth nakshatra does one precise and essential job: it times your seasons. The Life Chart calculates every season and chapter of your life from the Moon’s nakshatra at birth, with dates.
The mansions also matter in choosing a good time to begin something, because the Moon moves through them so quickly. Jyotish calls that practice muhurta. The planets themselves are interpreted by their role for your rising sign, which why some planets carry you and others ask more of you explains.
Practitioner note
27 nakshatras of 13°20′ each make 360°. Each is divided into four padas of 3°20′. Nakshatra boundaries meet sign boundaries every 120°: Ashwini, Magha and Mula begin at 0° Aries, Leo and Sagittarius; Ashlesha, Jyeshtha and Revati end at 30° Cancer, Scorpio and Pisces.
The nine straddling nakshatras are those ruled by the Sun, Mars and Jupiter. The Vimshottari balance at birth is the unelapsed fraction of the Moon’s nakshatra multiplied by its lord’s period in years.
Names and lords follow the pipeline’s ephemeris (Lahiri). In the Systems’ Approach, functional nature comes from the mooltrikona sign’s house from the lagna, never from the nakshatra.
The map you were born with
Your birth star is not a label to wear. It is the starting mark on a timeline that was set the moment you were born. Knowing it turns the seasons of your life from surprises into terrain you can see coming.
The Life Chart maps every season your birth star set in motion, with dates.