Enter your birth details to find asteroid 5145 Pholus: the part of the chart where a small action sets off a chain reaction, read by sign and house in a practitioner's voice.
What Pholus is, and what this calculator returns
Asteroid 5145 Pholus is a centaur, discovered on January 9, 1992 by David L. Rabinowitz at Kitt Peak National Observatory through the Spacewatch survey. Her orbit crosses the gap between Saturn and Neptune, with a perihelion near 8.6 AU and an aphelion near 32 AU, and the full cycle takes about 92 years. Because the orbit is highly eccentric, Pholus does not spend equal time in each sign: in a modern lifetime she may transit a single sign for as little as five years or as long as twelve, which makes her sign a generational marker first and a personal one second.
The calculator above returns your Pholus sign, degree, house, and tight natal aspects within a 1° base orb (0.5° for minor aspects). Positions come from JPL ephemeris data, the same source the rest of the Augurine engine reads. The sign and house entries below give you a written interpretation block by block; the calculator points you to the one that matches your placement.
The stance this page takes
Most writing about Pholus online cycles between two frames. One: she is the trauma-trigger asteroid, the chart factor that warns of explosive events about to unfold. Two: she is the cosmic-butterfly asteroid, a generalized metaphor for any small action with a big consequence. The first frame predicts; the second flattens. Neither leaves a person anything to do with the placement except wait or shrug.
We read Pholus as the uncorking asteroid. The pattern she names is the small action that opens a sealed container: a sentence said, a cork pulled, a question asked, a clause signed. What was already in the bottle does the rest of the work. Her placement marks where you tend to pull these corks and where they tend to land hardest when pulled, which makes the work practical rather than fatalistic. You can learn what your jars look like before the action that opens them.
Pholus vs. Chiron: the difference that matters
Pholus and Chiron are both centaurs and both entered the modern record the same way, but they are not interchangeable in a chart reading. Chiron names the chronic wound, the structural injury that organizes a life around it: the thing you carry, the thing the work returns to. Pholus names the single moment that uncorks the wound or opens the seal, the small action whose consequences then run on their own. Chiron is the condition; Pholus is the event.
In practice the contrast looks like this. Two people share a Chiron in the 4th house, an early-family wound. The first person's Pholus sits in Gemini squaring the Sun. The second person's Pholus sits in Capricorn trining Saturn. The wound is the same. The trigger pattern is not. The first uncorks her Chiron through an offhand sentence said to a sibling at thirty-one. The second uncorks his through a structural decision about an aging parent at fifty-two. The Chiron reading tells you the bottle. The Pholus reading tells you the cork.
When a chart has tight Pholus and Chiron contacts inside three degrees, read the two together: the event-trigger has gone looking for the chronic wound, or the chronic wound has built itself into the event-trigger. Either way the two bodies are working as one mechanism rather than as parallel themes.
Sign is generational, not personal. Pholus takes about 92 years to circle the zodiac, with an eccentric orbit that lets her sit in some signs for five or six years and others for ten or twelve. Your Pholus sign is shared with a cohort of birthdays around your own, and the sign tells you the texture of the small-cause-large-effect mechanic for that cohort: how a generation tends to uncork, what kind of seal it tends to break.
House is personal. With an exact birth time, Pholus also lands in a specific house, the life area where your version of the cohort's pattern actually plays. A Pholus in Sagittarius in the 3rd house places the curiosity-trigger inside language and the close circle. A Pholus in Sagittarius in the 10th places the same curiosity-trigger inside the public record of career. Same generational pattern, very different venue.
Aspects are activation. Tight contacts to natal personal planets and angles tell you what other part of the chart shows up at the moment of the uncorking. Pholus on the Moon means the cork is pulled through mood and gut. Pholus square Mars means the cork is pulled in a heated moment. Pholus conjunct Saturn means the cork is pulled inside a structural decision. Aspects tell you the agent, not the meaning.
Orb discipline matters more on Pholus than on the lights. The community standard for centaurs is 2° natal and 1° transit. Augurine surfaces only aspects inside a 1° base orb, so the calculator's default is already conservative. If you read beyond what the calculator returns, 2° is the outer ceiling; past that you are reading the surrounding chart rather than Pholus.
Key aspects to Pholus
Pholus to the Sun (conjunction, opposition, square): the chain-reaction mechanic is built into core identity. People read you as someone whose small actions tend to set off larger ones, and your bearing carries an open cork before you have language for it. The shadow is identity-by-trigger, the version of you that only feels real when something has just been set off.
Pholus to the Moon: the uncorking arrives through mood and gut first. You feel a small action coming before the conscious mind has named it. The Moon's sign and house tell you what the early signal feels like; that is your earliest interruption point in the sequence.
Pholus to Mars: the cork is pulled in heated language or motion. Mars's sign tells you the texture of the trigger and the contact tells you the temperature. A Pholus and Mars contact inside 2° is worth tracking specifically for the rehearsal moment, the half-second between the temperature rising and the move.
Pholus to Saturn: the highest-stakes aspect on this asteroid. Saturn gives Pholus weight, time, and consequence, and the uncorking becomes structural, with effects that span years. A Pholus and Saturn aspect inside 3° usually reads as the chart's defining cork-pull moment: the small decision that reorganizes the structure under a life. Worth reading first in any chart that has one.
Pholus to Chiron: the event-trigger has found the chronic wound. Read the two as one mechanism, not as parallel placements. The order matters: which body holds the wound and which body opens it is part of the reading.
Pholus to the lunar nodes: each cork-pull carries the weight of the larger arc, not just the local question. South-node contacts pull from inherited material; north-node contacts pull toward the next development.
Pholus to Pluto: the deep-uncorking combination. Pholus pulls the surface cork; Pluto holds the depth that comes out. Together the two produce the rare uncorkings that visibly change the floor of a life.
A fraction of people searching for a Pholus asteroid calculator are actually asking a different question. If any of the following is closer to what you want, the page you need is not this one.
Chronic wounds and the structural injury a life is organized around: that is Chiron, asteroid 2060. Pholus describes the moment a wound is uncorked; Chiron describes the wound itself. If your question is what is wrong, read Chiron first.
A cyclical pattern of harm being interrupted, particularly inside a relationship or a family line: that is Nessus, the centaur 7066. Nessus is the loop; Pholus is the single trigger that opened the loop. The two are often confused because both centaurs handle difficult material, but they answer different questions.
Sudden disruption from outside the system: that is the Uranus reading, not Pholus. Uranus shows up as an unanticipated shock from the environment; Pholus shows up as a small action with disproportionate internal consequence. The first reading is about the external event; the second is about the mechanism that opened to it.
Slow-burn transformation that restructures a life through pressure rather than through trigger: that is Pluto. A Pluto transit organizes years around its theme; a Pholus transit organizes a moment around its cork. Both can show up in a year of upheaval, but the reading differs.
In synastry, Pholus contacts can be read as questions about which person tends to be the source of the small actions whose consequences then organize the relationship. When one person's Pholus sits on another person's Sun, Moon, or angles, the cork-pulling lands in that area of the partner's chart, often as a sequence of small moments that compound rather than as a single dramatic event. Read it as a dynamic available to both people, not as a power assignment.
Pholus transits run on a 92-year orbit, with average daily motion near 0.01° but highly variable across the cycle. A direct pass through a 1° hot zone takes three to four months at typical speeds, and considerably longer near aphelion. Once retrograde motion is included, the full triple-contact period for a transiting Pholus over a natal point can span eighteen to twenty-four months across all three exact contacts. The strongest transit signature in a chart is Pholus aspecting natal Pholus, which is rare in a lifetime because of the long orbit and marks the activation moment of your trigger-work. Use the windows to notice the rehearsal in real time. The transit is not a prediction; it is a reading of which corks are currently in the room.
A short interpretation of Pholus 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
Pholus in Aries
the unstopped move
Pholus in Aries names a chain reaction triggered by an unstopped move: the door pushed before the read finishes, the message sent before the second thought arrives. The placement runs hot and arrives early, which works when the moment was actually waiting for someone to act and fails when the cork was holding something heavier than expected. The interruption point is the half-second pause between the impulse and the move, held long enough to feel whether the bottle is full of water or full of pressure. The shadow is impact-without-aftermath, the version that uncorks something, walks off, and treats consequences as somebody else's housekeeping.
B
Pholus in Taurus
the disturbed ground
Pholus in Taurus names a chain reaction triggered through the ground itself: the body, the table, the room arranged so carefully for years that one small disturbance reveals what the arrangement was actually holding down. The placement works when the disturbance is welcome and the foundation needed to shift, and fails when the slow-built stability was the thing that kept a harder pattern out of view. The interruption point is allowing the disturbance to finish, not patching the floor before the room has spoken. The shadow is restoration-without-acknowledgement, putting the cork back as though the small spill never happened.
C
Pholus in Gemini
the careless sentence
Pholus in Gemini names a chain reaction triggered by an offhand sentence: the joke that turned into the rumor, the casual mention that became someone's pivot. The placement is good at noticing the small cause but slow to feel its weight, which works for a journalist or a witness and fails when the speaker is also a participant. The interruption point is rereading the sentence before sending it, asking what bottle this opens for the person on the other end. The shadow is plausible-deniability, treating the spoken cork as something the speaker happened to be standing near, not something the speaker pulled.
D
Pholus in Cancer
the household jar
Pholus in Cancer names a chain reaction triggered inside the household-jar: a family detail surfaces, an ancestral story leaks, a Sunday dinner becomes the moment three generations realize what was being held in place. The placement works when the seal needed to come out and the family was strong enough to receive the spill, and fails when the rupture lands on the person least equipped to absorb it. The interruption point is choosing the time of the uncorking, refusing to let the moment make the decision when the room is already tired. The shadow is family-as-detonation, the placement read as permission to keep pulling corks at the same table.
E
Pholus in Leo
the witnessed pour
Pholus in Leo names a chain reaction triggered in front of an audience: the public moment that flips a fortune, the stage on which a small private gesture lands as something visible and irreversible. The placement works when the witnessing helps the truth land and fails when the visibility makes the spill more important than what spilled. The interruption point is locating the smallest possible audience that lets the moment be real, refusing the version where the audience is the point. The shadow is performance-as-trigger, uncorkings staged for the watching rather than for the content of the bottle.
F
Pholus in Virgo
the small adjustment
Pholus in Virgo names a chain reaction triggered by a small procedural action: the email rewritten, the form filed differently, the inventory completed in a way that revealed what the system was hiding. The placement is excellent at noticing the cork before it pulls, which works for an auditor and for anyone whose job is naming what is wrong, and fails when the noticing becomes a substitute for the move. The interruption point is letting the discovery cause one consequence at a time, refusing to lay every uncorking on the table the same week. The shadow is the small-correction that was secretly a large one, named as a fix.
G
Pholus in Libra
the courteous trigger
Pholus in Libra names a chain reaction triggered by a courteous gesture: the polite agreement that turned out to be a binding promise, the consultation that became the partner's permission to leave. The placement works when the courtesy is real and the gesture matches the weight of what was said, and fails when polite language was carrying a decision the speaker wasn't ready to own. The interruption point is naming the size of the offer before extending it, refusing the version where a small accommodation is dressed up as a generous one. The shadow is harm-as-civility, the trigger pulled inside a frame of fairness.
H
Pholus in Scorpio
the buried jar
Pholus in Scorpio names a chain reaction triggered in the buried jar: the secret released, the dossier opened, the moment a long-held confidence becomes air the room is now breathing. The placement is the most direct expression of the asteroid's mythology, and it works when the bottle was past time to come out and the people in the room could handle what came out of it, and fails when the release is performed as honesty when the work was actually revenge. The interruption point is asking whose interest the disclosure serves before the words leave the mouth. The shadow is uncorking-as-control, depth used as leverage rather than as truth.
I
Pholus in Sagittarius
the curious pour
Pholus in Sagittarius names a chain reaction triggered by curiosity: the question that should not have been asked at this dinner, the trip that opened a door the traveler now has to walk through. The mythology lives in this sign cleanly, both the uncorked wine jar and the curious examination of the poisoned arrow, and the placement is at its best when the asker stays for the answer, which works for a researcher and for anyone willing to follow the question all the way home. The interruption point is checking, before the question, whether the asker is ready for the conversation the question opens. The shadow is curiosity-without-residence, corks pulled in places the asker has no intention of cleaning.
\
Pholus in Capricorn
the structural uncorking
Pholus in Capricorn names a chain reaction triggered inside a structure: a policy small enough to overlook, a contract clause edited at the last minute, an institutional seal that turned out to be the only thing keeping the building from rearranging itself. The placement is good at the executive-level uncorking, where one decision reorders a hierarchy, and is mostly useful to people whose work touches structure: lawyers, founders, eldest siblings, anyone who manages the weight of a system. The interruption point is reading the second-order effects out loud before signing the first-order action. The shadow is treating the structure as too large to be moved by a small change, then watching it move.
K
Pholus in Aquarius
the collective ripple
Pholus in Aquarius names a chain reaction triggered into the collective: the protest sign held by one person that turned into the policy, the data point posted in a friend's group chat that became the network's argument. The placement is at home with the ripple metaphor and works when the originator is willing to be cited for the small cause they pulled, and fails when the cause becomes anonymous the moment the effect gets large. The interruption point is staying attached to the cork after the bottle has emptied, refusing the cleaner version of the story that erases the originator. The shadow is movement-without-author, ripples disowned the moment they get embarrassing.
L
Pholus in Pisces
the dissolving seal
Pholus in Pisces names a chain reaction triggered through dissolving seals: the boundary that softened in a conversation and then would not re-form, the dream voiced once that started behaving as though it had been promised. The placement works when the dreamer also keeps the receipt, and fails when the small unsealed moment is forgotten by the person who unsealed it and remembered by the people now living with what came out. The interruption point is writing down the small thing that was said, owning the moment of the soft cork being pulled. The shadow is uncorking-without-memory, the spill remembered only by the room.
Pholus through the 12 houses
If you have an exact birth time, your Pholus 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
Pholus in the 1st house
Pholus in the 1st places the chain reaction in your own presence: the way you walk into a room, the first words you offer, the bearing that pulls corks before you have language for the action. People feel the trigger on you before you say a word, which works when the room needed someone to start the conversation it was avoiding and fails when the room had been carefully sealed for a reason. The interruption point is reading the room's temperature in the first sixty seconds, not the first six. The shadow is identity-as-detonation, presence used to mark the place where the cork was pulled even when the spill belongs to someone else.
2
Pholus in the 2nd house
Pholus in the 2nd places the trigger inside what you own and how you earn: the resource decision that turned out to be a values decision, the price asked that became the position taken, the small financial move that reorganized the floor. The placement is sharp at the moment money stops being money and starts being meaning, which works when the move and the value match and fails when the money is uncorked first and the values catch up months later. The interruption point is asking what is actually being exchanged before the number is named. The shadow is wealth-as-uncork-tool, resources pulled because they are easier to pull than the conversation underneath them.
3
Pholus in the 3rd house
Pholus in the 3rd places the trigger in language and the close circle: an email sent to four people that arrived at fourteen, a comment to a sibling that has been quoted at family events ever since. The placement is at home with the small-cause-large-effect mechanic because language is itself a cork-pulling apparatus, which works for writers and for anyone willing to be cited on record, and fails when the speaker did not expect to be the source on record. The interruption point is treating each near-circle message as a quotable one, not as casual. The shadow is the offhand-sentence held lifelong, the speaker refusing the line they did say.
4
Pholus in the 4th house
Pholus in the 4th places the trigger inside the household and the inheritance line: a Christmas conversation that flipped the family story, a will reading where a small clause rewrote a generation, the moment one person refused a role the family thought was permanent. The placement is doing inherited work, not personal work, and is best read alongside the natal Moon and IC for which family layer the cork actually came from. The interruption point is naming the line that is being crossed before the family names it for you. The shadow is the household-uncorking framed as the individual's mood, a structural break narrated as somebody having a bad weekend.
5
Pholus in the 5th house
Pholus in the 5th places the trigger in play, creation, and children: a piece of work shared casually that became the public moment, a romantic gesture without a plan that became the relationship, a parenting decision made in a tired hour that the kid remembered. The placement works when the casual offering is allowed to mean what it ended up meaning, and fails when the player tries to take the move back after the room received it. The interruption point is owning the creative gesture in full once it has landed, even when it was meant lightly. The shadow is play-as-deniability, corks pulled inside the frame of just-kidding and left for someone else.
6
Pholus in the 6th house
Pholus in the 6th places the trigger inside daily work and health: the small habit change that reorganized energy, the conversation with a coworker that became the resignation, the medical test result that arrived as a list and left as a life. The placement is best at noticing how a routine adjustment ladders into a larger structural one, which works when the noticing comes before the cascade and fails when the cascade is already in motion. The interruption point is reading the small change as a possible large one before the habit forms. The shadow is the body-as-trigger-mechanism, somatic uncorkings used as the only channel the chart will accept.
7
Pholus in the 7th house
Pholus in the 7th places the trigger inside one-to-one partnership: the proposal said inside a fight, the contract clause that turned out to mean the partnership, the moment two people learned what they had actually been agreeing to. The placement is built for the long collaboration where small partnership decisions compound, which works when both people consent to the compounding and fails when one person treats each cork-pull as a single event the partner should let go. The interruption point is reading the past three small partnership moments as a sequence, not as isolated. The shadow is uncorking-by-relationship, triggers experienced only inside the dynamic with another person.
8
Pholus in the 8th house
Pholus in the 8th places the trigger where lives merge: shared resources, inheritance, sexual intimacy, the legal arrangement that turned out to be the binding one. The placement is the closest house match to the asteroid's mythology, because the 8th is itself the buried jar, and what gets uncorked here tends to be older and heavier than the person uncorking it. The placement works when each merger is read as its own threshold and the person is willing to name what they are mingling with whom, and fails when the merging is treated as one permanent fusion. The interruption point is asking what the bottle was holding before the pull. The shadow is depth-as-leverage, the buried thing brought up because the relationship has run out of other arguments.
9
Pholus in the 9th house
Pholus in the 9th places the trigger in worldview: the book read that broke the religious frame, the trip taken that left the traveler unable to return to the old country, the conviction held loudly that turned out not to survive the first hard test. The placement is good at the philosophical uncorking and works for teachers, founders, and anyone whose belief structure is part of their work, and fails when the holder rewrites the belief without acknowledging that yesterday they held a different one. The interruption point is keeping a record of what was believed before the cork. The shadow is conversion-without-witness, the worldview shift presented as though it had always been the current position.
0
Pholus in the 10th house
Pholus in the 10th places the trigger inside the public record: the press release that turned out to be the resignation, the reputation moment that flipped without permission, the career inflection point produced by a small visible decision. The placement runs near the MC and treats career as the venue where the small-cause-large-effect mechanic plays loudest, which works when the person has earned the platform that is now being uncorked on and fails when the visibility was unstable to begin with. The interruption point is reading the next public action as one that will be part of the record. The shadow is reputation-as-detonation, public moves chosen for the size of the trigger rather than the size of the actual work.
:
Pholus in the 11th house
Pholus in the 11th places the trigger in groups, networks, and aspirational communities: a comment in a group chat that became the policy, a friend's pivot that became your own, the casual organizing meeting that turned out to be the founding one. The placement is the strongest social-uncorking signature in the chart and works for organizers, friend-group conveners, and movement people whose work is partly the careful holding of group seal, and fails when the convener pulls a collective cork they were not ready to be the source on. The interruption point is asking, before the group action, what the group is actually being signed up for. The shadow is the network-uncorking the convener disowns the moment the network gets large.
;
Pholus in the 12th house
Pholus in the 12th places the trigger inside the part of you that operates without your conscious permission: the dream that turned into the early signal, the addiction that lived inside something the conscious mind framed as harmless, the moment a private practice met daylight and could not be put back. The placement is the slowest of the twelve and the hardest to date, because the 12th does not give the cork-pulling a visible event line, which works when the person keeps a journal of the small private corks and fails when nothing is written down and the only record is the room. The interruption point is the daily small noticing, the threshold for which the journal exists. The shadow is the private-uncorking the person is the last to see.
Asteroid 5145 Pholus is a centaur, discovered on January 9, 1992 by David L. Rabinowitz at Kitt Peak National Observatory through the Spacewatch project. She is named for the wise centaur in Greek mythology whose accidental uncorking of a communal wine jar triggered a chain of events that ended his own life. In modern astrology Pholus can be read as the part of the chart that handles small actions with disproportionate consequence: the cork pulled, the sentence said, the clause signed whose effects then run on their own.
How do I find my Pholus asteroid sign?
Enter your birth date, time, and place above. The calculator computes asteroid 5145 Pholus at your birth moment from a local JPL SBDB-derived Keplerian element set and returns the sign, degree, and house when birth time and location are known. Pholus takes about 92 years to complete one orbit on a highly eccentric path, so her sign shifts unevenly across a lifetime: as little as five years in one sign or as long as twelve in another.
What is the difference between Pholus and Chiron?
Chiron and Pholus are both centaurs, but they answer different questions. Chiron is the chronic wound, the structural injury that organizes a life around itself. Pholus is the single moment that uncorks the wound, the small action whose consequences then run on their own. In a chart reading, Chiron tells you what is wrong; Pholus tells you what tends to open it. When the two form a tight aspect (within three degrees), read them as one mechanism: the trigger has found the wound, or the wound has built itself into the trigger.
How long is the Pholus orbital cycle and what does a Pholus transit look like?
Pholus completes one orbit in about 92 years on a highly eccentric path between Saturn and Neptune. Her daily motion averages near 0.01° but varies significantly across the cycle. A direct pass through a 1° hot zone takes about three to four months at typical speeds. Once retrograde motion is included, the full triple-contact period for a transiting Pholus over a natal point can span eighteen to twenty-four months, which means a Pholus transit is a season in your life rather than a single date.
What orb should I use for Pholus aspects?
Keep it tight. Two degrees or less for natal aspects, one degree for transits. Centaur orbs are not the same as the personal-planet orbs you may be used to: a named asteroid loses signal fast past 2°, and the looser conventions you see online tend to manufacture meaning rather than find it. Augurine surfaces only aspects within a 1° base orb (0.5° for minor aspects), so the calculator returns the tightest reading by default.
What if I don't know my exact birth time?
You will still see the Pholus sign, which on Pholus is the generational layer rather than the personal one. The house placement requires the hour of birth, so it is skipped without it. The sign tells you the texture of the cork-pulling for your cohort; the house adds the life area where your version actually plays. Without a birth time, lean on aspects to your natal Sun and Moon, both of which you may already know from approximate time of day, as the next-best personal layer.