The search for Planet X: Transpluto-Isis, Nibiru, Harrington
For two centuries, discovering a planet by calculation was the height of scientific glory. Neptune was found in 1846 exactly where Urbain Le Verrier predicted it. That triumph launched a long hunt for more hidden worlds, and most of the bodies in this Part come from it.
Background: the Planet X hunt
- Percival Lowell believed irregularities in Uranus's motion pointed to a ninth planet, which he called Planet X, and searched for it until his death in 1916.
- Clyde Tombaugh found Pluto in 1930 at Lowell's observatory, close to the predicted spot. But Pluto proved far too small to disturb Uranus, so the hunt continued.
- Astrologers followed closely, calculating and using positions for proposed planets, sometimes decades before or instead of any discovery.
Transpluto-Isis
- What it is: a hypothetical planet beyond Pluto, calculated by several 20th-century astrologers. The Isis-Transpluto position is one of these calculations; the name Isis ties it to the Egyptian goddess who gathered and restored the scattered body of Osiris.
- Other names: John Hawkins called his version Bacchus in a 1970s book, and other writers proposed other names. The positions differ between versions.
- Themes proposed by astrologers: ideals and absolutes; cosmic justice; the restoration of what was broken; power beyond Pluto's personal transformation; perfectionism and the impossible standard. Some writers linked it to rulership of Taurus or Virgo, but there is no consensus.
- Status: no planet has been found at any calculated position. It remains in use mainly in some German and Uranian circles.
Nibiru
- The modern claim: Zecharia Sitchin's 1976 book The 12th Planet argued that Sumerian and Babylonian texts describe a planet, Nibiru, on a 3,600-year orbit, home of the Anunnaki, beings he said engineered humanity.
- Doomsday versions: in 1995 Nancy Lieder claimed Nibiru would pass Earth and cause catastrophe, first in 2003, then 2012, and later dates. Each passed without event.
- Astronomy's answer: a planet large enough to matter and close enough to arrive in a few years would already be among the brightest objects in the sky. None exists.
What the ancient texts actually say
- The word: Akkadian nēberu means a crossing, a ford, a ferry, or a point of passage.
- In astronomy: Babylonian texts use Neberu for a celestial crossing point and for a star associated with the god Marduk. Scholars usually identify it with Jupiter, especially at a certain point in its path, or with a star near the autumn equinox. The exact identification is debated.
- In Enuma Elish: in the fifth tablet, after defeating Tiamat and ordering the heavens, Marduk sets up his station, Neberu, to fix the positions of the stars. It is a controlling point of the sky, not a wandering planet.
- The number 3,600: a shar (šār), the unit 60 × 60 in the Babylonian base-60 system. Sitchin read it as the length of an orbit; in the texts it is a large number, used for example for the reigns of antediluvian kings in the Sumerian King List.
- Summary: the Babylonian Neberu is real, and it is Marduk's crossing point in an ordered sky. Sitchin's Nibiru is a modern interpretation layered onto it.
Astrological use: used in ancient-astronaut and alternative-history astrology as a symbol of hidden origins, returning gods, sudden reckonings and apocalyptic fear. Astro.com's position is a symbolic calculation.
Harrington
- Who: Robert Sutton Harrington, an astronomer at the U.S. Naval Observatory, who with Tom Van Flandern studied the outer solar system in the 1970s and 1980s.
- The claim: tiny unexplained deviations in the orbits of Uranus and Neptune suggested an unseen planet several times Earth's mass on a tilted, distant orbit. Harrington calculated where it should be and searched for it.
- The resolution: in 1989 Voyager 2 flew past Neptune and measured its mass precisely, slightly less than assumed. In 1993 E. Myles Standish showed that with the corrected mass, the deviations disappeared. There was nothing to explain. Harrington died the same year.
- Astrological use: some astrologers adopted his orbit as a working Planet X. It is now mostly of historical interest, a monument to a serious search that ended in a correction rather than a discovery.
- Symbolic reading: the thing believed to cause the disturbance, which turned out to be an error in measuring what was already known.
The inner fire and the two moons of myth: Vulcan, Selena, Proserpina
Vulcan is a planet astronomy predicted and then dissolved; Selena and Proserpina were never predicted by astronomy at all, but by astrological tradition and myth.
Vulcan
The astronomy
- The problem: Mercury's orbit slowly rotates, and in 1859 Urbain Le Verrier, fresh from predicting Neptune, found it rotated slightly faster than Newton's laws allowed.
- The prediction: an unseen planet inside Mercury's orbit, which he named Vulcan after the smith god whose forge lay closest to fire.
- The sightings: a country doctor, Edmond Lescarbault, reported seeing a dark spot cross the Sun in 1859. During the 1878 solar eclipse, astronomers James Craig Watson and Lewis Swift claimed to see it. None of these was ever confirmed.
- The resolution: in 1915, Einstein's general relativity explained Mercury's extra motion exactly, as a result of the Sun bending space. Vulcan was no longer needed.
- Vulcanoids: astronomers still search for small asteroids in the stable zone close to the Sun. None has been found.
The astrology
- Myth: Vulcan (Hephaestus), the lame smith of the gods, cast out of Olympus, who forged Zeus's thunderbolts, Achilles's armor and the net that caught Venus and Mars.
- Esoteric astrology: in Alice Bailey's system, Vulcan is a sacred planet and the esoteric ruler of Taurus, the forger of the soul's will, working deep inside matter.
- Other traditions: some Western astrologers proposed Vulcan as ruler of Virgo or Libra.
- Themes: the inner forge; concentrated will; craftsmanship; power hidden near the source; the wounded outcast who makes the tools of the gods.
- Position: by definition always within a few degrees of the Sun, so it tends to fuse its meaning with the Sun's: the will behind the identity.
Selena, the White Moon
- Origin: introduced by Russian astrologer Pavel Globa, who drew on the Avestan tradition of ancient Persian Zoroastrianism. In that dualist cosmology, light and darkness are both active forces, and he paired a White Moon of light with the Black Moon of shadow.
- Nature: a purely symbolic point, not a body or orbital point. It moves on a cycle of about 7 years, roughly 7 months per sign.
- Name: Selene, the Greek goddess of the Moon, who drove her silver chariot across the night.
- Core meanings:
- The guardian angel; where protection and grace enter the life.
- Merit carried from the past; the good karma that can be drawn on.
- Light, purity, conscience; the call toward the higher path.
- Help that arrives unexpectedly, when one acts in integrity.
- Selena and Lilith: if Lilith is where the soul is tested and refuses, Selena is where it is protected and guided. Lilith is the shadow that must be faced; Selena is the light that shows the way.
- By house: the area of life where grace, protection and good fortune tend to flow, and where choosing the ethical path brings reward.
- Transits: its passage over personal points is read as a time of support, protection or spiritual opening.
Proserpina
- Myth: the Roman name of Persephone, daughter of Ceres (Demeter). Hades (Pluto) seized her and carried her to the underworld. Her mother's grief froze the earth. Because Proserpina had eaten pomegranate seeds, she could return only for part of each year. Her return is spring, her descent winter.
- The mysteries: her story was the heart of the Eleusinian Mysteries, the most sacred initiation rites of ancient Greece, which promised initiates a better fate after death.
- As a hypothetical planet: several European astrologers proposed a planet Proserpina beyond Pluto, with different calculated orbits. Astro.com's h57 is one version.
- A real Proserpina: separately, asteroid 26 Proserpina is a real main-belt body, discovered in 1853. It is a different object from the hypothetical planet.
- Themes:
- Descent and return; the cycle of loss and renewal.
- The maiden who becomes queen of the underworld: innocence transformed into sovereignty through darkness.
- Rebirth after crisis; healing that comes from having gone under.
- The mother and daughter bond, separation and reunion.
- Seasons, grain, harvest, and the rhythm of death and life in nature.
- Rulership proposals: some writers link Proserpina to Virgo (the maiden, the grain), others to Scorpio. There is no agreement.
A second moon, a Christmas star, a real Planet X, and the point of spring
These four span the full range of this Part: a moon that was almost certainly never there, a theory of the most famous star in history, a planet that may truly exist, and a point that exists with total certainty.
Waldemath's Black Moon
- The claim: in 1898 Dr. Georg Waldemath of Hamburg announced that he had observed a second, dark moon of Earth, several hundred kilometers across, visible only as it crossed the Sun. He published an orbit for it.
- Sepharial: the English astrologer Walter Gorn Old, writing as Sepharial, adopted it in 1918 as Lilith, the Dark Moon, and published an ephemeris. For decades this was the astrological Lilith.
- The problem: a body that size so close to Earth would be easy to see and would disturb the Moon's orbit measurably. Nothing of the kind exists. Later astrologers moved the name Lilith to the lunar apogee.
- Sepharial's meanings: a strongly malefic point: fatality, compulsion, obsession, jealousy, deception, and the karmic weight of a life.
- Modern readings: the karmic shadow; what we deny; the compulsions we inherit; the dark side of fate, from which awareness is the only exit. Some astrologers keep it alongside Black Moon Lilith as a separate, heavier layer.
The Great Christ Comet
- Author: Colin R. Nicholl, a biblical scholar, in The Great Christ Comet: Revealing the True Star of Bethlehem(2015).
- The argument: the star of Matthew 2 behaved like no planet or star: it appeared, went ahead of the Magi and stood over a place. Only a great comet, he argues, could appear, move, and seem to stop. He reconstructs a comet of extraordinary brightness around 6 to 5 BCE, and links it to the celestial imagery of Revelation 12, the woman clothed with the Sun, and to the constellation Virgo.
- The competing theories:
- Kepler's triple conjunction: Jupiter and Saturn met three times in Pisces in 7 BCE.
- Jupiter and Venus: an extremely close conjunction in 2 BCE.
- The Chinese record: Chinese astronomers noted a new "broom star" or guest star around 5 BCE, used by Nicholl and others.
- The astrological reading: the Magi (Persian magi were astrologers) read a royal omen in Jupiter's motions in Aries, argued by astronomer Michael Molnar.
- Status: a theory; the orbit is Nicholl's reconstruction, not an observed object.
- Themes: the sign that announces a birth; revelation; the arrival of a new age; the sacred message written in the sky.
Planet 9
- The evidence: several of the most distant known bodies beyond Neptune, including Sedna, have orbits that cluster in the same direction and tilt the same way. Chance alone seems unlikely.
- The hypothesis: in 2016 Caltech astronomers Konstantin Batygin and Mike Brown proposed a planet of roughly 5 to 10 Earth masses on an elongated orbit hundreds of times farther from the Sun than Earth, taking perhaps 10,000 to 20,000 years to circle it. Scott Sheppard and Chad Trujillo had earlier raised the possibility.
- Narrowing the search: Agnès Fienga and Jacques Laskar used precise tracking of the Cassini spacecraft at Saturn to rule out parts of the sky where the planet's gravity would have shown up.
- The skeptics: some argue the clustering is an artifact of where telescopes happened to look. Others have proposed alternatives, including a small primordial black hole.
- The search now: the Vera C. Rubin Observatory, which began its survey in 2025, is expected to find it or make its existence much less likely.
- Mike Brown is also the astronomer whose discovery of Eris led to Pluto's reclassification.
- Astrological meaning (emerging): the unseen force that shapes things from a great distance; the influence known only by its effects; the hidden organizer; what we sense before we can prove.
The Vernal Point
- What it is: the point where the Sun crosses the celestial equator in March, 0° Aries in the tropical zodiac. It is the origin of the celestial coordinate system itself.
- Its motion: it moves backward against the stars through precession. In the Fagan/Bradley sidereal zodiac it currently sits near 5° Pisces, the Synetic Vernal Point. Its slow approach to the end of the constellation Pisces is what defines the arrival of the Aquarian Age.
- In Uranian astrology: the Aries Point is one of the most important personal points: it connects anything touching it to the world, the public and the collective.
- In mundane astrology: the Sun's entry into Aries (the Aries ingress chart) is cast for capitals and read as the chart of the year.
- Meaning: the world axis; beginnings; the meeting point between the individual and the collective; the hinge of the ages.