Jyeshtha nakshatra: Mercury's star at the end of Scorpio, the Gandanta question, and how to check yours

Jyeshtha is the eighteenth nakshatra and the last of Scorpio: it runs from Scorpio 16°40' to the very end of the sign, where both the star and the sign change at once. Mercury rules it in the Vimshottari scheme. That shared boundary with Mula is one of the three places in the zodiac that BPHS calls Nakshatra Gandanta, and much of what is written about Jyeshtha elsewhere is about that junction. This page sets out what the books in this app's library actually say, including the fact that they do not agree on how long the junction lasts.

The page is one of 27, all laid out alike, so it can be read beside Anuradha before it and Mula after it. The sign is described on the Scorpio (Vrishchika) page. Every number below was produced by running the app's engine; how that engine works is on the methodology page, and the books are on the sources page.

Where Jyeshtha sits: the arc, the padas and the engine's facts

Jyeshtha is the 18th of the 27 nakshatras. Each nakshatra is 13°20' of the sidereal zodiac, 360 degrees divided by 27, and this app measures them from 0° Aries in the Lahiri (Chitrapaksha) frame. So Jyeshtha runs from Scorpio 16°40' to Sagittarius 0°00', wholly inside Scorpio. A planet is "in Jyeshtha" when its sidereal longitude falls inside that arc. When someone says "my nakshatra is Jyeshtha", they mean the Moon was there at birth: the Janma Nakshatra. The Moon moves about 13 degrees a day, so it crosses a nakshatra boundary inside most birth dates, and the nakshatra calculator reports the star at both ends of the birth date when no time is given. The difference between a rashi and a nakshatra is set out separately, as is why two apps can name two different stars for the same birth.

All of Jyeshtha is in Scorpio, so a Moon there is a Scorpio Moon, with Mars as sign lord and Mercury as star lord, and in its sign of fall by BPHS Ch. 3 Sl. 49-50 (deepest at Scorpio 3°, which is in Vishakha, far from here). The end of Jyeshtha is the end of Scorpio. A Moon a few minutes of arc before Scorpio 30° is in Jyeshtha and Scorpio; a few minutes after, it is in Mula and Sagittarius. Both the star lord and the sign lord change at that instant, Mercury and Mars giving way to Ketu and Jupiter, which is why a birth time near that moment matters more here than almost anywhere.

Inside the star the engine draws nine unequal sub-divisions, one for each Vimshottari lord, each as wide as that lord's share of the 120-year cycle, and the first belongs to Jyeshtha's own lord, Mercury. These sub-lords matter most for points that move fast through the sky, above all the Ascendant, which is why the sub-lord needs a birth time to the minute. The sub-lord calculator prints this same table for your own Moon:

What the classical texts say about Jyeshtha

Three books in this app's library speak about Jyeshtha directly. Jyotisha-Siddhanta-Sara (Rama R. Rao, 1994) gives every nakshatra a description in Ch. IV; the corpus copy is a scan with no text layer, so the pages cited below were read as images. Brihat Parashara Hora Shastra (BPHS) uses Jyeshtha as a counting point and a member of groups rather than describing it. Advanced Predictive Astrology places it in one of its three humour groups; Saravali does not mention it in the text read for this page. The readings are reported as the texts give them, with the same omissions the engine makes: the caste label each nakshatra carries in Jyotisha-Siddhanta-Sara is not repeated, nor are its predictions about appearance and marriage.

Jyotisha-Siddhanta-Sara, Ch. IV (pp. 87-115)

Entry 18, spelt Jyeshta, describes the star as "in the form of a boar's tusk or a circle, consisting of three stars", with Indra as presiding deity, and the jack-fruit tree as its plant. The people associated with it "are rulers, valiant soldiers, beautiful, wealthy and famous; they are disposed to cheat others of their property, they are fond of travel and are associated with crops and rain."

The prose reading: the person "will have few friends, will be very cheerful, virtuous and of irascible temper". The sloka and its translation: "blessed with fame and good progeny; he is wealthy; his bravery and courage are evident. He has a status in life but his character is defective." The engine paraphrases the sloka as "accomplished and courageous, well-regarded, though with some rough edges to your character", softening the last clause into a tendency as its comment says it does for the harsher entries.

Jyeshtha is one of the chapter's four "hot (thrisna)" stars, with Ardra, Aslesha and Moola (p. 90), and p. 91 says a planet placed in a star gives effects "according to the above characteristics" during its period. It is the Laya member of its triad (p. 88), so the chapter's durithamsa caution, that "the third and fourth quarters of Samhara nakshatras" are "believed to be unfavourable", covers Jyeshtha's last two padas, Scorpio 23°20' to 30°00'.

The chapter returns to Jyeshtha three times on the junction with Mula. On p. 87 it lists the gandantha nakshatras, those which "commence with a rasi or end with a rasi", and Jyeshtha is one of the three that end one. On p. 88 it defines Abhukta Moola as "the last ghati (24 minutes) of Jyeshta and the first two ghatis (48 minutes) of Moola". And on p. 114, in a list of birth-star cautions, it calls a half ghati, twelve minutes, "covering the last part of Jyeshta and the first portion of Moola" the Anthara-ala. The same list divides Jyeshtha into ten parts, each said to affect a different relative; the app does not use or repeat predictions about relatives, and the list is named here only so its source is known. The book introduces that whole list with a caution of its own: "mere birth in these nakshatras cannot be the sole factor; the horoscope as a whole has to be assessed", adding that Guru in or aspecting the lagna "will cancel the ill-effects of the nakshatra".

BPHS: Jyeshtha as a deity, a count and a group

BPHS lists Jyeshtha eighteenth and gives its deity twice. Ch. 6 Sl. 24-26, listing the Saptavimshamsa lords as the nakshatra deities, names the eighteenth Vasava; Ch. 93 Sl. 1-2 says plainly that "the ruling deity of Jyeshtha is Indra and the ruling deity of Mula is Rakshasa", and gives that as the reason the junction is feared: "as both the deities are inimical to each other". Jyotisha-Siddhanta-Sara also names Indra.

Ch. 92 is where the junction is defined. Sl. 1 names three kinds of Gandanta, of Tithi, Nakshatra and Lagna. Sl. 3 gives the Nakshatra Gandanta as "the last two Ghatikas of Revati and first two Ghatikas of Ashvini, the last two Ghatikas of Aslesha and first two Ghatikas of Magha and the last two Ghatikas of Jyeshtha and first two Ghatikas of Mula". Sl. 4 adds the Lagna version, including "the last half Ghatika of Vrischik and first half Ghatika of Dhanu". Sl. 5 then marks out a longer stretch: "Amongst these Gandantas the last 6 Ghatikas of Jyeshtha and first 8 Ghatikas of Mula are known, as Abhukta Mula." The surrounding chapters, 92 to 94, are remedy chapters, and this app prescribes no remedies, so only the definitions are used here.

In Ch. 46 Jyeshtha is a group member. Shastihayani (Sl. 40-41) gives "Jyeshtha, Mul, P.Ashadha" to Śukr (Venus), 6 years. Kalachakra places "Vishakah, Anuradha and Jyeshtha in the Apsavya" (Sl. 56-58), and Sl. 77 names Jyeshtha among the stars whose padas follow the Mrigashira pattern. Dwisaptati-sama (Sl. 37-39) counts from Mul, the next star, so Jyeshtha is the 27th and last in its count.

Ch. 94 Sl. 10 also attaches a marriage-related warning to a girl born in Jyeshtha. It sits in a remedy chapter, predicts harm to a relative, and is not used by the app; it is named so a reader who meets it elsewhere knows where it comes from. For the Moon as a graha, see the Moon in Vedic astrology page.

Advanced Predictive Astrology

Advanced Predictive Astrology (Vol. II, p. 225) puts Jyestha in its Vata group of humour-producing asterisms, and later in the same chapter lists it among the stars that "rule over wind". These are a modern author's groupings in a chapter on health and are not medical advice. The book has nothing specific to say about the Jyeshtha-Mula junction.

Where the sources disagree

The junction is defined three ways in two books. BPHS Ch. 92 Sl. 3 makes the Nakshatra Gandanta the last two ghatikas of Jyeshtha and the first two of Mula, and Sl. 5 makes Abhukta Mula a wider band, the last six ghatikas of Jyeshtha and the first eight of Mula. Jyotisha-Siddhanta-Sara p. 88 makes Abhukta Moola the last one ghati of Jyeshtha and the first two of Moola, and p. 114 adds a twelve-minute Anthara-ala across the boundary. Taking the book's own ghati of 24 minutes, BPHS's Abhukta Mula spans about five and a half hours of clock time and Jyotisha-Siddhanta-Sara's about seventy-two minutes. The texts do not reconcile these, and this page does not choose between them.

The deity agrees in substance: Indra in both books, with BPHS Ch. 6 using the name Vasava. The engine computes none of the junction definitions; it reports the star and pada and leaves Gandanta unflagged. Its Rakshasa gana and Deer yoni for Jyeshtha have no source in this library, as its header says.

The four padas of Jyeshtha

Each nakshatra splits into four padas of 3°20', and each pada is one navamsa, so the 108 padas of the zodiac walk through the twelve signs nine times. BPHS Ch. 46 Sl. 87-88 gives the rule as arithmetic: take the number of nakshatras already passed, divide by 3, multiply the remainder by 4, add the pada, and count that many signs from Aries. For Jyeshtha's first pada: 17 nakshatras have passed, 17 divided by 3 leaves 2, times 4 is 8, plus 1 is 9, and the 9th sign from Aries is Sagittarius. The engine's computeNavamsa, which uses the sign-based rule from Jyotisha-Siddhanta-Sara Ch. II, returns Sagittarius too. The Navamsa calculator shows the whole D9 chart, and the Navamsa article explains why it needs an accurate birth time.

Jyeshtha closes a group of three stars, so its navamsas run Sagittarius, Capricorn, Aquarius and Pisces, and the fourth pada ends at the end of Pisces in the navamsa as well as at the end of Scorpio in the birth chart: the junction is a boundary in the D9 too, where the next pada, Mula's first, begins again at Aries. None of Jyeshtha's padas is vargottama.

The durithamsa padas in Jyotisha-Siddhanta-Sara, the third and fourth, are Scorpio 23°20' to 30°00'. Every one of the junction definitions above lies inside the fourth pada's last stretch, so a Moon early in the fourth pada is in the durithamsa range but not in any Gandanta band, a distinction some readings blur.

The sub-lord table shows the same boundary from the inside. Jyeshtha's last sub belongs to Saturn and runs from Scorpio 27°53' to the end of the sign, 126.67 arc-minutes wide; the next slice of the zodiac, Mula's first, belongs to Ketu and is only 46.67 arc-minutes wide. A birth whose Moon is near the junction can move through Saturn's sub, across the boundary and through Ketu's whole first sub within a few hours, so every finer reading built on the sub-lord is as sensitive to the birth time as the Gandanta question itself.

The Kalachakra columns are the Mrigashira pattern of BPHS Ch. 46 Sl. 78-81, as for Anuradha: Cancer and Pisces as Deha and Jiva in the first pada, Taurus and Gemini in the second, Capricorn and Gemini in the third, Aries and Sagittarius in the fourth. The app computes Kalachakra from these rows, with the balance at birth and dated periods.

Jyeshtha and the dasha sequence

BPHS Ch. 46 Sl. 12-14 finds the first Vimshottari dasha by counting from Krittika to the birth star and dividing by nine; the remainder picks a lord from the sequence Sun, Moon, Mars, Rahu, Jupiter, Saturn, Mercury, Ketu, Venus. Counting Krittika as 1, Jyeshtha is 16; 16 divided by 9 leaves 7, and that is Mercury. The engine reaches the same lord from its own table. Sl. 15 gives Mercury 17 years. A Moon in Jyeshtha therefore starts life in a Mercury Mahadasha, and Sl. 16 says how much of it remains: the part of the nakshatra the Moon has still to cross, as a share of the whole, times 17 years.

Run on a sample birth of 1 January 2000 with the Moon a quarter of the way into Jyeshtha, the engine leaves three quarters of the Mercury period, 12.75 years, and dates the next periods from there:

What a Mercury period is classically held to bring is on the Mercury Mahadasha page and the Mercury in Vedic astrology page; the Vimshottari dasha calculator gives your own dates, and the sub-periods article explains why those dates move when the birth time moves. For Mercury as a graha, see the Mercury page.

Ashtottari is the 108-year system BPHS Ch. 46 Sl. 17-20 offers as an alternative "when Rahu is not in Lagn, in any other Kendr, or Trikon to the Lord of the Lagn". It assigns stars in alternating runs of four and three from Ardra. Jyeshtha is the second of Mercury's run of three, Anuradha, Jyeshtha and Mula, so a Jyeshtha Moon starts in a Mercury period of 17 years. Sl. 21-22 gives a benefic's period a third per star, so at the very start of Jyeshtha one third of Mercury's period is taken as already over. Jyotisha-Siddhanta-Sara Ch. V (p. 120) prints the same grouping as a table. The app computes Ashtottari from the Moon's exact position, with the balance at birth and every period dated, on the alternate dashas calculator and the Kundali screen.

The engine does compute six other nakshatra-based systems from the same chapter, each with its own starting star and condition. For a Moon in Jyeshtha (sampled at the middle of the star) the alternate dashas calculator returns:

Dwisaptati-sama is the line to notice: it counts from Mula, so Jyeshtha is 27th, and 27 divided by 8 leaves 3, the third lord, Mars, 9 years. A Moon a few minutes later, in Mula, would count 1 and start with the Sun. Across the Jyeshtha-Mula boundary every one of these systems changes lord, as Vimshottari does, from Mercury to Ketu.

Jyeshtha in compatibility and muhurat

Ashtakoot matching, the 36-point Guna Milan the match tool runs, reads four of its eight kootas from the two Moon nakshatras: Tara, Yoni, Gana and Nadi. The engine places Jyeshtha in the Rakshasa gana, the Aadi nadi and the Deer yoni. Its own header is candid that none of the classical books it works from contains the Ashtakoot rules, no nakshatra gana list and no koota point scale, so these tables are carried as they are rather than cited. One partial anchor exists: Advanced Predictive Astrology (p. 225) prints "Humour Producing Asterisms" in three groups of nine, Vata, Pitta and Kapha, and that grouping coincides star for star with the engine's Aadi, Madhya and Antya nadis. Jyeshtha sits in its Vata group. The book does not call this Nadi koota, and this page does not claim it does.

Two people with the Moon in Jyeshtha score 28 of 36 in the engine: full marks on seven kootas and 0 of 8 on Nadi, because the same star always means the same nadi. The other stars sharing Jyeshtha's Aadi nadi, and so also scoring 0 on Nadi against it, are Ashwini, Ardra, Punarvasu, Uttara Phalguni, Hasta, Mula, Shatabhisha, Purva Bhadrapada. On Yoni, Anuradha shares the Deer and scores the full 4; the engine treats the Dog as the Deer's enemy, so Ardra and Mula score 0; every other pairing scores 2.

Tara counts from each partner's star to the other's. The engine marks a count as unfavourable when it leaves 3, 5 or 7 after division by 9, and BPHS Ch. 44 Sl. 15-21 does name the 3rd, 5th and 7th stars from the birth star Vipat, Pratyak and Vadh, though in a chapter on longevity this page does not reproduce. Counted forward from Jyeshtha, the unfavourable stars are Bharani (12), Rohini (14), Ardra (16), Purva Phalguni (21), Hasta (23), Swati (25), Purva Ashadha (3), Shravana (5), Shatabhisha (7). The score is 3 when both directions are clear, 1.5 when one is, and 0 when neither is. The compatibility feature shows every koota with its points, so a low total can be traced to the factor behind it.

For choosing a time, the muhurat feature and the muhurat calculator add 16 points to a window when the transiting Moon is in a star on the activity's list and take 6 away when it is not. Jyeshtha is on none of the six lists, so a window with the Moon there always takes the 6-point deduction. Jyotisha-Siddhanta-Sara's classing of Jyeshtha as hot is not tied to an activity in the pages read, so there is no source to compare with the engine leaving it off every list. Jyotisha-Siddhanta-Sara (p. 89) also calls the 22nd star from one's birth star the vainasika nakshatra, "to be avoided for auspicious events"; for a Jyeshtha native that is Uttara Phalguni. The engine does not apply that rule.

Checking Jyeshtha in your own chart

1. 1.Open the nakshatra calculator with your birth date and, if you have it, time and place. It returns the Moon's star, its pada and its lord. Without a time it also shows the star at 00:00 and 23:59, so you can see whether Jyeshtha held all day.
2. 2.Check the pada against the table above. The pada fixes the Moon's navamsa, which the Navamsa calculator shows in full.
3. 3.If your Moon is within a few arc-minutes of a sub-lord boundary, the sub-lord calculator prints the distance to the next one. An error of a few minutes in the birth time can move it.
4. 4.Open the Vimshottari dasha calculator to see the Mercury balance at birth and every period after it.
5. 5.Look at the whole chart in the birth chart calculator. A star describes the Moon's placement; the houses, the Ascendant and the other planets are read from the full chart.
6. 6.For matching, enter both birth details in the match tool; it computes both stars itself, so nothing has to be typed in by name.

For a Jyeshtha Moon the decisive check is distance to Scorpio 30°. If it is within a degree, the birth time decides the star, the sign, the dasha lord and the pada; the unknown birth time article explains what can and cannot be settled without a precise time, and the kundali feature shows the full chart.

Common misreadings of Jyeshtha

• "All of Jyeshtha is Gandanta." No text here says so. BPHS confines the Nakshatra Gandanta to the last two ghatikas, and even its wider Abhukta Mula band to the last six; Jyotisha-Siddhanta-Sara's definitions are shorter still.
• The ghatikas in these definitions are units of time, not of arc. Jyotisha-Siddhanta-Sara gives a ghati as 24 minutes. How much arc the Moon covers in that time depends on its speed, so the band is not a fixed number of arc-minutes.
• The app does not flag Gandanta. A reading that does not mention it is not saying the birth is clear of it; it is saying the engine does not compute it.
• The Jyotisha-Siddhanta-Sara line about defective character is a classical description, conditional on a strong Moon. The app carries a softened tendency and no more.
• Even the books that list the junction cautions qualify them: Jyotisha-Siddhanta-Sara says birth in a star "cannot be the sole factor" and that the chart as a whole must be assessed.

Questions about Jyeshtha

Which sign is Jyeshtha nakshatra in?

Scorpio, entirely: Scorpio 16°40' to 30°00'. Its end is the end of the sign.

Who is the lord of Jyeshtha?

Mercury, with a Vimshottari period of 17 years. The deity is Indra, called Vasava in BPHS Ch. 6. See the Mercury Mahadasha page for what that period is held to bring.

Is Jyeshtha a Gandanta nakshatra?

Its last part is. BPHS Ch. 92 Sl. 3 puts the Nakshatra Gandanta at the last two ghatikas of Jyeshtha and the first two of Mula. Jyotisha-Siddhanta-Sara counts Jyeshtha among the three gandantha stars that end a rasi.

What is Abhukta Mula, and how long is it?

A band across the Jyeshtha-Mula boundary. BPHS Ch. 92 Sl. 5 makes it the last 6 ghatikas of Jyeshtha and the first 8 of Mula; Jyotisha-Siddhanta-Sara p. 88 makes it the last 1 ghati and first 2. The books disagree, and the app computes neither.

What are the navamsas of Jyeshtha's padas?

Sagittarius, Capricorn, Aquarius and Pisces. None is vargottama.

What gana, nadi and yoni does the app give Jyeshtha?

Rakshasa gana, Aadi nadi and the Deer yoni, shared with Anuradha. The engine's header notes these Ashtakoot tables have no source in this library.

How does a Jyeshtha Moon match with a Mula Moon in the app?

Run with the Moons at Scorpio 25° and Sagittarius 5°, the engine gives 14.5 of 36: Yoni, Bhakoot and Nadi score 0, because the Deer and the Dog are enemies, the signs are second and twelfth from each other, and both stars are Aadi nadi. One small koota depends on which partner is entered first, as the engine's header notes. The match tool shows each koota.

My Moon is at Scorpio 29°50'. What should I check?

That you are ten arc-minutes, about twenty minutes of time, from Mula and Sagittarius. Check the birth time's source, and read the nakshatra calculator's 00:00 and 23:59 results if the time is uncertain.