Enter your birth details to find dwarf planet 136199 Eris: the chart's disruptor of complacency, the part that names the rigged arrangement the wider system has agreed not to see.
What Eris is, and what this calculator returns
Eris (136199) is a dwarf planet, the largest currently known, with a 558-year orbit that takes her out to about 97 AU at aphelion and back in to about 38 AU at perihelion, near Pluto's orbital distance. Her orbital inclination is roughly 44 degrees, the steepest of any of the major outer bodies, and her eccentricity is about 0.44. She was first imaged at Palomar Observatory on October 21, 2003 and officially identified by Mike Brown, Chad Trujillo, and David Rabinowitz on January 5, 2005. The IAU named her Eris in September 2006 after the Greek goddess of strife and discord, and her discovery is what forced the 2006 redefinition of 'planet' that demoted Pluto. She has one known moon, Dysnomia, named for Eris's daughter, the goddess of lawlessness.
The calculator above returns your Eris sign, degree, house, current retrograde state, and any tight major aspects to your personal points. Positions come from a JPL SBDB Keplerian element set, the same source the rest of the Augurine engine uses for transits and timing. The twelve sign and twelve house entries that follow give written interpretations placement by placement; the calculator points you to the ones that match your chart.
The stance this page takes
Most online writing about Eris collapses her into a generic feminine-rage symbol, blending her with Black Moon Lilith and the other shadow-feminine bodies until she stops carrying any distinct meaning. We are not going to do that.
Eris is not the dwarf planet of anger. She is the dwarf planet of the inconvenient truth the wider system has agreed to ignore. The myth is the wedding of Peleus and Thetis: Eris is the goddess not invited because she would ruin the mood; she shows up anyway, throws a golden apple inscribed 'to the fairest' into the room, and walks out; three goddesses claim it, a Trojan prince judges, and the Trojan War follows. The reading is not subtle. When you exclude the voice that names the rigged thing, the rigged thing still arrives, and the cost of pretending it did not is higher than the cost of letting it in. Eris's role is the naming. The chart-level question is where she lives in your chart and what she keeps refusing to let you ignore.
How to read your Eris placement
Your Eris sign is almost certainly Aries because she is generational; the next section explains why. The piece that actually varies between birth charts is the house. Read the house first.
Aspects to personal planets are where the cohort claim becomes a private appointment. Orbs run tight: 1.5 degrees for major aspects with personal points, 0.75 for the minor work. Wider than that, the body is generational background rather than foreground. Eris in tight aspect to your Sun, Moon, Ascendant, Venus, or Mars rewrites the corresponding chart factor with the disruptor signal. Aspects to slow movers (Pluto, Uranus, Neptune) are cohort texture, not personal.
Retrograde at birth turns the disruptor inward first. About six in ten charts carry natal Eris retrograde. The reading is that the audit runs on the self before it runs on the world, which is uncomfortable but useful: the disruptor who has done their own audit is harder to dismiss when they finally name the outside thing.
Why almost everyone alive has Eris in Aries
Eris entered Aries around April 1926 and stays there, with brief retrograde dips back into Pisces during the first ingress and forward into Taurus near the final one, until about 2048. That means every reader of this page, statistically, was born with Eris in Aries. The astrological literature has not always been clean about this. A page that promises a 'what your Eris sign means' tour through twelve possibilities is mostly selling you historical reference for eleven of them and the live one for the twelfth.
Inside the long Aries window, the cohort divides into rough sub-cohorts that track the broader cultural waves: roughly 1926 through 1955 (post-suffrage labor reordering, the interwar and post-war shifts in women's economic place), 1956 through 1985 (civil rights, second-wave feminism, anti-war and anti-colonial movements), 1986 through 2015 (third-wave feminism, intersectional critique, networked activism), and 2016 through 2048 (the post-MeToo fourth wave, the cohort still arriving). None of this is deterministic. A 1962 birth with Eris in the 12th does the disruption privately, where a 1962 birth with Eris on the Midheaven does it publicly. The cohort gives you the topic; the house tells you how much air it gets.
Eris conjunct, square, or opposite the natal Sun (within 1.5 degrees) wires identity itself to the disruptor signal. The native is rarely able to be quiet about the thing they have seen, and they are often the chart in the family who names the family's inconvenient truth at the holiday table. The output tends to read as a body of work (creative, political, scientific) that argues with the polite reception of the field across decades rather than as a single sharp incident.
Eris on the Moon makes the disruption a felt body-and-emotion experience rather than a chosen intellectual position. The native often had an early relationship to a caregiver who carried the disruptor signal (a mother who would not be domesticated, a father whose anger was the family's open secret). Steve Jobs, born February 24, 1955, has Moon at 7° Aries within a degree of natal Eris; the temperament, the famous unwillingness to inherit anyone's existing UI, follows.
Eris on the Ascendant means people read the disruptor in your physical presence within minutes, often before you have spoken. Eris on the Descendant puts the function in the partner seat: see the 7th-house entry below. Eris aspects to Venus rewrite the love-and-pleasure narrative; the native cannot have the cozy version of partnership or aesthetic life and tends to make work that refuses to flatter. Eris on Mars is the activist temperament, the strategic disrupter: at best, generative conflict; at worst, the native fights everything in front of them and forgets to name the actual target.
Eris is retrograde roughly five months a year, every year, and the retrograde stations move by less than half a degree per year, so generations share the retrograde-direct status of natal Eris in tight groups. About six in ten charts carry Eris retrograde natally.
Natal Eris retrograde turns the disruptor inward before it turns outward. The native first runs the audit on themselves, including the parts of themselves that have been complicit in the patterns they will later name in the world. The risk is internalized: the disruptor becomes a private prosecutor who never lets the native rest. The available work is to let the inner audit complete and then bring the findings out, on schedule, without waiting forever for self-perfection that never arrives.
Transiting Eris retrograde is a roughly annual invitation to revisit a specific structural critique already in motion. Whatever was named during the previous direct station gets a second look: was the naming accurate, were the boundaries clean, was the response proportionate. The retrograde is for refinement, not for first contact.
The Pluto-Eris square, 2020 through 2024
From early 2020 through late 2024, Pluto in late Capricorn perfected and re-perfected a square to Eris in late Aries across multiple stations. The aspect is generational by definition, but its window coincided with a global pandemic, the collapse of multiple political consensuses, the reordering of supply chains and labor markets, and the loudest open accounting of structural racism, gendered violence, and inherited debt in a generation.
The natal-chart relevance is direct. If you have a personal point (Sun, Moon, Ascendant, MC, Venus, Mars) between roughly 22 and 29 degrees of any cardinal sign (Aries, Cancer, Libra, Capricorn), the Pluto-Eris square parked itself on your chart for parts of that window. That is not horoscope filler. It is a structural transit. The reading is to ask which structure of yours got named for what it actually was during those four years, and what you have or have not done with that naming. The exact square has now separated. The work it began has not.
You will see Eris and Black Moon Lilith conflated, often by writers who want the feminine-rage archetype without doing the work of telling them apart. They are different mathematics from different traditions. Black Moon Lilith is the geometric apogee of the Moon's orbit, not a physical body. Eris is a physical dwarf planet with a JPL-tracked orbit and a known moon (Dysnomia).
Lilith reads as the part of you that refuses to be domesticated, the appetite that will not be tamed into the polite version of itself. Eris reads as the part of you that names which arrangement is rigged. The two functions overlap (both surface what the polite story has tried to keep down) but they are not identical. The cleanest chart work reads them as two voices in the same broader register: Lilith refuses, Eris names. Both are useful. Neither is a substitute for the other.
A short interpretation of Eris in each zodiac sign. Read the entry that matches your placement above. The other entries give you the texture and shape of the archetype across the full wheel.
A
Eris in Aries
the disruptor who names it directly
Eris in Aries names the disruptor as direct, frontal, declarative. The cohort that holds this placement (every reader born between roughly 1926 and 2048) does not soft-pedal the inconvenient truth. They name the rigged arrangement at speed, sometimes before the room is ready to hear it, and they keep moving the conversation forward whether or not the room consents. The placement works when the frontal naming serves the change that needs to land and the speaker is willing to stay in the room after the apple has been thrown, and fails when the disruption becomes its own reward and the cohort burns out hosting permanent revolution without the slower work of building what replaces the rigged thing. The interruption point is staying. The shadow is naming-as-spectacle, a disruptor whose visibility is the point and whose follow-through never arrives.
B
Eris in Taurus
the disruptor of rigged material order
Eris in Taurus names the disruptor inside the material, the body, and the land. The forward cohort (the late 2040s onward) inherits the climate, resources, and food fight in its ripened form, and reads the rigged arrangement through its physical stakes rather than through its declarative claims. The placement works when the slow material refusal lands (the unbought field, the body unsold, the inheritance redirected), and fails when the disruptor settles into the comfort of having seen the rigged thing without ever moving against it. The interruption point is the material act, however small. The shadow is naming-as-quiet-witness, a disruptor whose seeing never leaves the body.
C
Eris in Gemini
the disruptor by sentence
Eris in Gemini names the disruptor as speech and writing. The cohort that holds it disrupts through articulation: the published sentence, the broadcast, the open letter, the question asked in the room nobody else would ask. The placement works when the speech meets the rigged arrangement at the right register and lands a permanent shift in the conversation, and fails when the placement traffics in the speech as performance and never reaches the readers it was meant for. The interruption point is the chosen audience. The shadow is naming-as-discourse, a disruptor whose words circulate among the already-convinced.
D
Eris in Cancer
the disruptor of family silence
Eris in Cancer names the disruptor inside the household, the family system, and the inherited line. The cohort carries the inconvenient truth about the family the wider clan refused to see, and the work lives in the breaking of the inherited silence. The placement works when the silence breaks at the right generation and the truth reaches the line, and fails when the disruptor becomes the family scapegoat permanently rather than the one-time breaker of the loop. The interruption point is letting the next generation receive the truth rather than re-running it inside the family that refused. The shadow is naming-as-lineage-trap, a disruptor stuck inside the system they were meant to free.
E
Eris in Leo
the disruptor on the stage
Eris in Leo names the disruptor as a public figure, the cohort whose disruption happens in front of an audience. The placement makes the disruptor and the audience inseparable, and the inconvenient truth gets named on a stage where naming carries cost. The placement works when the visibility serves the change rather than the disruptor's reputation, and fails when the placement turns the disruption into its own creative output and the audience comes for the spectacle rather than the substance. The interruption point is asking whether the truth would still be named off-camera. The shadow is naming-as-stage, a disruptor whose courage is performed.
F
Eris in Virgo
the disruptor of broken systems
Eris in Virgo names the disruptor inside daily systems, work, and the body's care. The cohort reads the rigged arrangement in its operational detail: the under-counted hours, the corner-cut safety procedure, the diagnostic the medical system refused to run. The placement works when the precision of the audit translates into the structural fix and the broken system actually gets repaired, and fails when the placement becomes the permanent auditor whose work is naming the failures without ever building the replacement. The interruption point is the constructive proposal alongside the critique. The shadow is naming-as-fault-finding, a disruptor whose vision sees only what is broken.
G
Eris in Libra
the disruptor of dishonest peace
Eris in Libra names the disruptor inside partnership, fairness, and the negotiated peace. The cohort refuses the dishonest treaty, the smooth conversation that hides the unequal terms, the polite arrangement that has someone losing inside it. The placement works when the refusal of the false peace makes room for a more honest agreement, and fails when the placement burns every partnership it touches because no agreement is ever clean enough. The interruption point is the agreement that is good enough rather than perfect. The shadow is naming-as-purity, a disruptor unwilling to live inside any imperfect arrangement.
H
Eris in Scorpio
the disruptor of buried terms
Eris in Scorpio names the disruptor inside the buried, the merged, and the shared underground. The cohort surfaces the financial, sexual, and psychic terms the polite world had agreed not to discuss: the inherited debt, the silenced violation, the inheritance bought with the wrong currency. The placement works when the surfacing is paced for the held party and the boundary between disruptor and the system being disrupted stays intact, and fails when the placement merges with the dark material and comes up entangled. The interruption point is the boundary preserved during the disclosure. The shadow is naming-as-merger, a disruptor who became the rigged thing they were meant to break.
I
Eris in Sagittarius
the disruptor of received doctrine
Eris in Sagittarius names the disruptor inside doctrine, worldview, and inherited story. The cohort reads the omitted history, the curriculum that left half the world out, the religion that sanctified the wrong arrangement. The placement works when the heretical reading lands a permanent revision of the larger story, and fails when the placement substitutes one totalising worldview for another and the disruptor becomes the new authority. The interruption point is staying with the unsettled. The shadow is naming-as-conversion, a disruptor who walked out of one wedding party and joined another.
\
Eris in Capricorn
the disruptor of institutional consensus
Eris in Capricorn names the disruptor inside institution, hierarchy, and structural authority. The cohort reads the rigged terms of the contract, the union betrayed, the executive bonus paid as the workforce was cut. The placement works when the structural critique reaches the structure and the building reorganizes, and fails when the placement settles for being the institution's permanent dissenter without ever becoming part of what redesigns it. The interruption point is the willingness to take on the building work the critique opened. The shadow is naming-as-permanent-opposition, a disruptor who refuses every authority including the one they were meant to become.
K
Eris in Aquarius
the disruptor inside the in-group
Eris in Aquarius names the disruptor inside the network, the movement, and the in-group. The cohort breaks the consensus inside the consensus, critiques the activist movement from within, names the founding myth's omissions. The placement works when the internal critique strengthens the larger group and the movement metabolizes the truth without collapsing, and fails when the placement runs the purity test on every member until the coalition has eaten itself. The interruption point is the alliance preserved across the disagreement. The shadow is naming-as-purity-spiral, a disruptor whose criticism finally consumes every kin.
L
Eris in Pisces
the disruptor underneath the dream
Eris in Pisces names the disruptor as mystic, artist, and dissolved boundary. The historical cohort (last in this sign in the early twentieth century) carried the inconvenient truth through art, dream, and contemplative practice rather than through frontal declaration. The placement works when the work surfaces the truth through the right medium and the audience receives it without the disruptor having to insist, and fails when the placement disappears into the dissolution and the inconvenient truth never quite gets named. The interruption point is the moment of legibility. The shadow is naming-by-vapor, a disruptor whose seeing never crystallizes into anyone else being able to use it.
Eris through the 12 houses
If you have an exact birth time, your Eris also lands in a specific house, the life area where this prompt may be easiest to notice. Without a birth time, use the sign placement as the steadier read and skip this section.
1
Eris in the 1st house
Eris in the 1st places the disruptor inside identity and visible self: people meet you and feel the inconvenient truth has just entered the room, often before you have spoken. The placement works when the legible signal matches the inner clarity and the disruptor's body itself becomes the available reading, and fails when the native gets trapped in being the named outsider as a permanent identity rather than moving the conversation forward. The interruption point is the moment of being someone else, not the disruptor, in front of someone who has decided that is what you are. The shadow is naming-as-self, a disruptor who has stopped being a person and become a function.
2
Eris in the 2nd house
Eris in the 2nd places the disruptor inside money, resources, and self-worth: the placement reads the rigged math in pay structures, inheritances, and the quiet ways material safety gets distributed. The placement works when the seeing turns inward first and the native builds an honest relationship to their own resources before naming everyone else's, and fails when the disruptor lives only in the critique of other people's money while the native's own remains under-examined. The interruption point is the audit of self. The shadow is naming-as-grievance, a disruptor whose own resources never get the same examination.
3
Eris in the 3rd house
Eris in the 3rd places the disruptor inside speech, siblings, and the local circuit: the placement names the thing in the group chat, breaks the silence at the family dinner, asks the question the room had agreed not to ask. The placement works when the truth being named serves repair and the room can metabolize it, and fails when the placement traffics in the satisfaction of having named rather than the change the naming was meant to land. The interruption point is the silence after the naming, the willingness to wait for the room to respond. The shadow is naming-as-reflex, a disruptor whose interruption never lets the room get to the answer.
4
Eris in the 4th house
Eris in the 4th places the disruptor inside the family system: the inconvenient truth (an addiction, a parentage, an exile, a violence) that earlier generations agreed not to see now lives in the native's awareness. The placement works when the lineage worker breaks the loop and the truth reaches the family in a form the family can hold, and fails when the disruptor becomes the labelled scapegoat permanently and the rest of the system gets absolved. The interruption point is letting other family members carry the truth alongside the native. The shadow is naming-as-isolation, a disruptor who breaks the silence and then is left alone holding it.
5
Eris in the 5th house
Eris in the 5th places the disruptor inside creativity, romance, play, and the children: the artist who refuses to flatter the audience, the parent who refuses to lie to the child about how the world works, the lover who keeps refusing the script. The placement works when the disruption in the territory of pleasure produces art and relationship more honest than the polite version, and fails when the placement turns every pleasure into a critique and the play stops being playable. The interruption point is the willingness to keep playing in the rigged game. The shadow is naming-as-joy-killer, a disruptor whose vision can no longer let pleasure rest.
6
Eris in the 6th house
Eris in the 6th places the disruptor inside daily work, health, and the body as system: the placement reads broken labor conditions, neglected illnesses, and the corner-cutting the workplace agreed to. The placement works when the seeing translates into the whistleblower's letter, the union, the ethics complaint, the chronic-illness advocacy that finally lands, and fails when the placement becomes the permanent grind of being the office's truth-teller without the role ever being chosen. The interruption point is the deliberate decision to take on the role rather than fall into it. The shadow is naming-as-burnout, a disruptor consumed by the audit they never agreed to run.
7
Eris in the 7th house
Eris in the 7th places the disruptor inside partnership: the most-projected placement for Eris in the chart, where the native attracts partners who carry the disruptor signal until the function gets reclaimed. The placement works when the partnership becomes the venue for the dishonest peace to be named and the bond grows real because the truth is being told inside it, and fails when one partner becomes the permanent disrupter and the other the permanent peacekeeper and the asymmetry hardens. The interruption point is the explicit exchange of the role inside the partnership. The shadow is naming-by-projection, a disruptor who sees their own function only when it walks into the room as someone else.
8
Eris in the 8th house
Eris in the 8th places the disruptor inside shared resources, intimacy, and the underground: the placement exposes the unequal terms of merged life, the unpaid emotional labor, the silenced grief, the inherited debt. The placement works when the deep-systems clinician can sit in the room where other people cannot and the disclosure lands a permanent rebalance, and fails when the native turns every intimacy into a forensic audit and the close ones feel surveilled rather than seen. The interruption point is the boundary preserved during the disclosure. The shadow is naming-as-prosecution, a disruptor whose intimacy has become evidence-gathering.
9
Eris in the 9th house
Eris in the 9th places the disruptor inside worldview, religion, and the inherited story: the placement finds the doctrinal omission, the curriculum that left out the inconvenient half, the philosophy whose conclusions only work if the experiment is rigged. The placement works when the reformer or heretic lands a permanent revision of the larger story and the field is genuinely changed, and fails when the placement settles for the satisfaction of having seen through the doctrine without ever building the replacement. The interruption point is staying with the unsettled rather than picking the next certainty. The shadow is naming-as-iconoclasm, a disruptor whose business is breaking statues without ever carving new ones.
0
Eris in the 10th house
Eris in the 10th places the disruptor inside career, public reputation, and the visible work: the placement makes the native known, formally or informally, for the position they take, and the position is often unpopular in the profession before it is correct. The placement works when the position gets chosen consciously and the native is willing to bear the career penalty during the years the position is still inconvenient, and fails when the placement is surprised by the cost and the native withdraws before the work has landed. The interruption point is the deliberate acceptance of the visible disruptor role. The shadow is naming-without-staying, a disruptor whose career hosts the truth-telling but cannot bear the consequences.
:
Eris in the 11th house
Eris in the 11th places the disruptor inside groups, networks, and future-oriented community: the placement breaks the consensus inside the in-group, critiques the activist movement, names the founding myth's omissions. The placement works when the internal critique strengthens the larger group and the coalition metabolizes the truth without splitting, and fails when the placement runs the purity test on every member until the coalition has eaten itself. The interruption point is the alliance preserved across the disagreement. The shadow is naming-as-purity-spiral, a disruptor whose criticism finally consumes every kin.
;
Eris in the 12th house
Eris in the 12th places the disruptor inside the hidden, the contemplative, and the dissolved: the placement does the disruption work privately and often invisibly, through long-form writing, contemplation, therapy, imprisonment, or any practice whose impact arrives slowly and through other voices. The placement works when the private work is genuinely enough and the truth gets carried forward by someone else's louder career, and fails when the disruptor turns the practice inward and the inner critic never sleeps. The interruption point is the deliberate clearing practice, the rest the disruptor agrees to take. The shadow is naming-as-internal-prosecution, a disruptor whose audit has nowhere left to land except the self.
Eris is a dwarf planet discovered in 2005 and named after the Greek goddess of strife. Astrologically, she reads as the part of your chart that names the inconvenient truth the wider system is colluding to ignore. In your natal chart, her sign is generational (almost certainly Aries, since she has been there since 1926 and stays until about 2048), her house describes the territory of your disruptor work, and her aspects to personal planets describe how loudly the disruptor reads.
How do I find my Eris sign and house?
Enter your birth date, time, and place above. The calculator returns Eris's sign, degree, house, current retrograde state, and any tight aspects the engine finds to the main chart factors. Positions come from a JPL SBDB Keplerian element set at epoch JD 2461000.5, the same source the rest of the Augurine engine uses for transits and timing. The sign is generational; the house and aspects are where the personal reading sharpens.
Is Eris an asteroid or a planet?
Neither, technically. Eris is a dwarf planet, the same category Pluto was reclassified into in 2006. Her IAU minor-planet number is 136199. Astrologically, many writers still refer to her as an asteroid out of habit because she sits in the broader minor-bodies catalogue, but the body is closer in mass and reading to Pluto than to Vesta or Ceres. We treat her under the dwarf-planet header and read her with the centaur and outer-body interpretive grammar rather than the personal-asteroid one.
Why does almost everyone have Eris in Aries?
Eris has a 558-year orbit, so each sign passage runs for roughly a hundred years. She entered Aries around 1926 and stays there until about 2048, which means every reader of this page, statistically, was born during her Aries passage. The sign is a generational claim, not a personal one. The house is what differentiates your chart from your neighbour's. The aspects to personal planets are what differentiate it from the rest of the cohort.
What does Eris retrograde mean in a natal chart?
Eris is retrograde roughly five months a year, and about six in ten natal charts carry her retrograde. The reading: natal Eris retrograde turns the disruptor inward before it turns outward. The native first runs the audit on themselves, including the parts of themselves that have been complicit in the patterns they will later name in the world. The work is letting the inner audit complete and then bringing the findings out on schedule, without waiting forever for the self-perfection that never arrives.
What was the Pluto-Eris square of 2020 to 2024?
From early 2020 through late 2024, Pluto in late Capricorn perfected and re-perfected a square to Eris in late Aries across multiple stations. The window coincided with the global pandemic, the collapse of several political consensuses, and the loudest open accounting of structural inequities in a generation. If you have a personal point (Sun, Moon, Ascendant, MC, Venus, Mars) between 22 and 29 degrees of a cardinal sign, the square parked itself on your chart for parts of that window. The reading is to ask which structure of yours got named for what it actually was during those years.
Is Eris the same as Black Moon Lilith?
No. Black Moon Lilith is a calculated geometric point, the apogee of the Moon's orbit. Eris is a physical dwarf planet with its own ephemeris and a known moon (Dysnomia). They share register (the un-domesticated feminine, the refusal of the polite version) but they are computed from different math, they belong to different astrological traditions, and they ask different questions of a chart. Read both. Do not collapse one into the other.