Nibiru

The Orbit is 3D: the ellipse the words describe, drawn among the real planets on their mean-element orbits and a seeded belt, at any year and any zoom. Zoomed in, the inner system is a coin at the needle's tip; zoomed out, a 470-AU retrograde ellipse tilted like Halley's; edge-on, it stands out of the ecliptic and dives through it at the nodes. A stretched timeline widens the few decades near perihelion where anything happens.

The Passage integrates one perihelion pass with Sun, Venus through Neptune and Nibiru all massive, twice, massive and massless, and reports the difference: closest approaches, the kick to each planet's eccentricity, 160 belt test bodies differenced one by one, and the last row, Nibiru's own period, which comes out changed by hundreds of years whether or not it has any mass.

The Clock sends a massless body through the four giants at random phases 160 times and reads the period after each: a histogram scattered around 3,600 by hundreds of years, and a random walk in 1/a, passage after passage, until the body is unbound. The book's own 3,500-year gap and the 120-shar tenure are drawn on it. Flip the inclination to the prograde mirror and the kicks double.

The Sky prices brightness for the size on the dial: magnitude along the orbit against the naked eye and the surveys, and magnitude today for every possible phase of the orbit at once, so there is no argument about where it is. The Battle keeps the Tiamat ledger: masses on a log scale, the impulse budget of moving a planet, the impactor and its energy, the Deluge tide against the Moon's. The File runs twelve cards, the words first, then the arithmetic, then two verdicts at equal size.

The station's source note on The Anunnaki Chronicles lays Sitchin's scenario out in seven links, and the first is the planet: Nibiru, returning between Mars and Jupiter once every 3,600 years. The note ends by promising this bench. The anthology gives that orbit exactly one number; beyond it, one pointer (an inclination "almost identical to that of Halley's Comet", Amnon Sitchin, p. 87), a perihelion in words ("between Mars and Jupiter"), a size ("three or four times the size of Earth"), a direction (retrograde, inferred from the order Neptune-then-Uranus in its reading of the Enuma Elish), and no mass. Kepler needs no more: 3,600 years fixes the semi-major axis at 235 AU, a perihelion in the belt fixes the eccentricity at 0.9885, and the aphelion falls at 467 AU. The book never printed any of those numbers; they follow from its words. This bench builds that orbit, runs it through the real solar system, and asks what it could and could not do.

It also follows the note on The Anunnaki Connection: Heather Lynn spends a chapter dismantling the planet on the grounds that astrophysicists find no such mass or orbit, grounds she shares with the astronomers. This bench measures those grounds one by one. As ever, the answer is not presupposed. The orbit can be built; a body of the book's size on it would be a new wandering star, naked-eye for about fifteen years a passage and as bright as Jupiter at closest approach, exactly the kind of thing sky-watching cultures write down; and its passages barely disturb Earth's orbit, so "we would see it in Earth's orbit" is not the objection, and the bench says so. What the Clock, the Sky and the Battle measure is written down just as plainly: Jupiter and Saturn move the 3,600 by hundreds of years each passage and the orbit's median life is a hundred-odd passages; today, at every phase, the body would be brighter than the surveys that looked for it; the belt is three percent of the Moon; the tide at two AU is a millionth of the Moon's. Two verdicts hang at equal size in the file, and the dials are yours.

Everything on the bench is arithmetic on the book's words and on published constants: Kepler for the orbit, RK4 for the passages, the magnitude law for the sky, one-line ledgers for the battle. A script that ships with the site re-derives every displayed number before the build passes, including the ones the book supplied and the ones it never did.

a = P^(2/3) · e = 1 − q/a · Q = 2a − q · V = H + 5 log₁₀(rΔ) + 0.02α · Δ(1/a) per pass ≈ 5×10⁻⁴ AU⁻¹ · Δv = |v_c − v_t| · a_tide ∝ M/d³

The orbit is built from the words and nothing else. One period fixes a; the belt perihelion fixes e and Q; Halley's inclination orients the plane. The book gives no node, argument or epoch, so the bench borrows Halley's orientation and takes 556 BCE, the last passage Lynn reports Sitchin giving, as the default epoch, both on dials. Every derived number (235 AU, 0.9885, 467 AU, 25.6 km/s, 2.4 years inside 5 AU) is printed on the face of the instrument and pinned by the tune.

The passage is a real integration, differenced. The same planets at the same phases are run twice, once with Nibiru at the dialled mass and once massless, and the osculating elements are subtracted, so Jupiter's ordinary secular stirring cancels and what remains is Nibiru's. Earth's eccentricity moves by 8×10⁻⁷ per passage, Mars by 5×10⁻⁶, Jupiter by 1.6×10⁻⁴; the belt's RMS by 6×10⁻⁵ with the closest test body at 0.13 AU. The naive √N columns (120 shars; 1.25 million passages) are drawn with their assumption stated.

The clock is measured, not imported. The RMS change of 1/a per perihelion passage for a long-period orbit with q of a few AU is a textbook number, about 5×10⁻⁴ AU⁻¹, the one that shapes the Oort spike; the bench gets 4.9×10⁻⁴ from its own random-phase passages through the giants. Applied to 1/a = 4.26×10⁻³ that is a twelve-percent change in energy per pass: hundreds of years of period. Strung together the kicks random-walk to zero; sixty walks give a median life of 171 passages, 1.8 million years, 97% ending in ejection.

The sky is the book's own size, priced. 3.5 Earth radii at Neptune's albedo is H = −6.7; at 410 AU today that is V 19.5, at aphelion 20.0. Sweep the last-perihelion year across the whole period and the curve never drops below the Pan-STARRS depth of 21.5; even Earth's size and albedo never drops below 22.9. Near perihelion the same body is naked-eye for 14.5 years, which is the reading the bench does not dispute.

What survives every dial is worth stating: the orbit is constructible; a body of the stated size on it would have been unmissable near perihelion; and the inner planets are not where the claim fails. What does not survive is the number itself, which the giants reset every passage; the sky today, which has no phase dark enough; the belt, which is not half of anything; and the tide, which is a millionth of the Moon's. Whether that closes the question or reprices it is the reading the bench leaves to you.

One period, one perihelion, one inclination, one epoch, one size, one density, and for the battle a Tiamat orbit and an impact speed. Between them they draw every orbit the words could mean, which is the exhibit.

• The period. The book's one number, 3,600, on a dial from 1,000 to 10,000. Kepler turns it into the semi-major axis and the aphelion; the clock's kick pool re-runs when it moves.
• The perihelion. "Between Mars and Jupiter": 2.1 to 3.3 AU. Wherever it sits the aphelion barely moves, because 2a is fixed by the period; the closest approach to Earth and the belt stir change with it.
• The inclination. Halley's 162.3° by default; above 90° is retrograde. 17.7° is the same tilt the prograde way, and the kinder-case comparison the Clock invites.
• The last perihelion. 556 BCE by default, from Lynn's report; the book's own 11,000 and 7,500 BCE are on the dial. It sets where the body is today and the planets' phases at the passage. The Sky's sweep panel makes the choice unnecessary by showing every phase at once.
• The size and density. Five presets for "three or four times the size of Earth": the book's size at Neptune's density (12.7 Earth masses) or at rock (43), Neptune, Earth, Jupiter. Mass drives the passage and the tide; radius and albedo drive the sky.
• Tiamat's orbit and the impact speed. The starting orbit the North Wind must move Earth from (2.2 to 4 AU) and the closing speed of the satellite that delivers the impulse (20 to 80 km/s). Nearer costs less; faster costs less mass and more energy.

Seven claims that make up the Nibiru scenario and its standard rebuttal, from the anthology's own sentences to the NASA objection, with where each lands against the arithmetic.

1. Start on the orbit and press "the whole ellipse". A 470-AU needle; Neptune's orbit is the small ring near the tip. Press "edge on": Halley's tilt. Zoom back to the inner system and drag the timeline through perihelion.
2. Go to the passage. Read Earth's row: Δe = −8×10⁻⁷. Read the last row: Nibiru's period +602 years, and the massless control +605. The kick is the planets', not Nibiru's.
3. Go to the clock. The histogram scatters hundreds of years around 3,600; the amber line is the book's own 3,500-year gap. Watch the walk end in ejection. Press "another random walk" a few times.
4. Drag the inclination to 17.7°. The prograde mirror. The histogram widens: retrograde was the kind case.
5. Go to the sky. Today's marker: V 19.5 at 410 AU, above every survey line. Look at the lower panel: every possible phase at once, and the curve never reaches the Pan-STARRS line.
6. Switch the size to Earth. The faintest possible today becomes V 22.9. Still above LSST's line; brighter than Pan-STARRS depth for 1,340 of the 3,600 years.
7. Go to the battle. The dashed bar is the mass the story requires of the belt; the solid bar below it is the belt. Then read the impulse ledger and the tide row.
8. End on the file. The One Number, The Book's Own Arithmetic, The Clock, Today, then both verdicts: what a constructible orbit could do, and what it could not.

The honest line between what is reported, what is measured, what is modelled on them, and what is a reading:

In one line: the book's words are REPORTED with page numbers; the planets, the belt mass, Halley's elements, the survey depths and the 2025 candidate are MEASURED; the orbit, the speeds, the magnitudes and the battle ledgers are EXACT arithmetic on those; the passages, the kick pool, the random walk and the borrowed orientation and density are MODELLED, every choice on a visible dial and every number re-derived by scripts/nibiru-tune.mjs before the build passes; and what a constructible orbit carrying an unmissable body amounts to is a READING the bench declines to make, hanging the two verdicts at exactly equal size. Drag the period, choose the size, sweep the phase, and see what one number is worth.

• Zecharia Sitchin, ed. Janet Sitchin, "The Anunnaki Chronicles: A Zecharia Sitchin Reader" (Bear & Company, 2015): the 3,600-year period (pp. 10, 244, 331, 340), the Halley comparison (p. 87), the belt perihelion (pp. 10, 88, 90), the retrograde inference (p. 106), the size (p. 124), the celestial battle (pp. 96-122), the dated passages (pp. 14, 72), IRAS and Planet X (pp. 68, 343). Reviewed as a source note in this site's culture wing.
• Heather Lynn, "The Anunnaki Connection" (New Page Books, 2020), chapter 7: the 556 BCE / "after 2900 CE" report, the IRAS retraction, the return-date ledger (pp. 196-206). Reviewed as a source note in this site's culture wing.
• E. M. Standish, "Keplerian Elements for Approximate Positions of the Major Planets" (JPL, 1800-2050 table): the planets' mean elements and rates used for positions and phases; masses from the JPL GM ratios.
• E. V. Pitjeva and N. P. Pitjev, "Masses of the Main Asteroid Belt and the Kuiper Belt from the Motions of Planets and Spacecraft", Astronomy Letters 44 (2018): the main-belt mass 2.39×10²¹ kg used in the ledger; Krasinsky et al., Icarus 158 (2002), for the earlier estimate.
• M. E. Brown, M. J. Holman and K. Batygin, "A Pan-STARRS1 Search for Planet Nine", Astronomical Journal 167 (2024): 50% completeness at V = 21.5 for a Planet Nine mover; with ZTF and DES, 78% of the Brown & Batygin parameter space excluded, the remainder near the galactic plane. Batygin & Brown, AJ 151 (2016), for the Planet Nine hypothesis itself.
• T. L. Phan et al., "A Search for Planet Nine with IRAS and AKARI Data", Publications of the Astronomical Society of Australia (2025): pairs separated by 42-69.6′ over 23 years, 500-700 AU, 7-17 Earth masses; 13 pairs, one surviving candidate. J. R. Houck et al., ApJ 290 (1985), for the 1983 IRAS sources as cirrus and galaxies.
• K. L. Luhman, "A Search for a Distant Companion to the Sun with WISE", ApJ 781 (2014): no Saturn analogue within 28,000 AU, no Jupiter analogue within 82,000 AU; L. Iorio, "Planet X revamped after the discovery of 2012 VP113?" (2014), for the ephemeris bounds on a distant super-Earth.
• JPL Small-Body Database, 1P/Halley: i = 162.26°, Ω = 58.42°, ω = 111.33°, q = 0.586 AU, P = 75.3 yr; the borrowed orientation.
• J. A. Fernández, "New and evolved comets in the solar system", A&A 96 (1981), and E. Everhart, "The origin of short-period comets" (1972): the typical planetary energy change of a long-period orbit per perihelion passage, Δ(1/a) ≈ 5×10⁻⁴ AU⁻¹ for q of a few AU; the bench integrates it rather than importing it.
• D. Morrison, "Nibiru and Doomsday 2012: Questions and Answers", NASA (2012), for the standard dynamical objection this bench tests and, at the book's own perihelion, does not endorse.

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