Published October 25, 2025 | Version v1
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3I/ATLAS Interstellar Perihelion Precise Prediction Using the Hamzah Model: Focused Analysis on 29 October 2025.

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All 400 Research Projects and Theories of Hamzah Equation

(Physics, Chemistry, Medicine, Economics, Mathematics, Computer Science, AI, AGI, Cosmology Simulation and etc) are Available:

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https://orcid.org/0009-0009-3175-8563

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Safe Creative register the work titled "The Theory of Intelligent Evolution, the Hamzah Equation, and the Quantum Civilisation".

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(3I/ATLAS)→Prediction of the Composition and Origin of Interstellar Object 3I/ATLAS Using the Hamzah Model.

https://zenodo.org/records/17234056

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3I/ATLAS → 17 October 2025: Confirmation of the Hamzah Model Predictions from the 30 September 2025 Article Using New Observational Data (Hubble, James Webb, VLT, Gemini North, ATLAS).

https://zenodo.org/records/17377795

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3I/ATLAS Complete Simulator.

https://zenodo.org/records/17435127

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Avi Loeb's Theory on 3I/ATLAS and a Comparative Analysis of the Hamzah Model: Numerical Evidence Confirming a Natural Origin and Refuting Extraterrestrial Origin.

https://zenodo.org/records/17442420

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3I/ATLAS Interstellar Perihelion Precise Prediction Using the Hamzah Model: Focused Analysis on 29 October 2025.

https://zenodo.org/records/17441119

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Introduction

The discovery of interstellar comets has opened a new window into the study of planetary systems beyond our own. 3I/ATLAS (C/2025 N1), the third confirmed interstellar object following 1I/ʻOumuamua and 2I/Borisov, was detected on 1 July 2025 by the ATLAS survey in Chile. This object exhibits a hyperbolic trajectory with an incoming velocity at infinity of approximately v∞ ≈ 58 km s⁻¹, indicating a clear extrasolar origin. Its perihelion is predicted at 1.3561 ± 0.0001 au on 29 October 2025 at 11:47 ± 00:01 UTC, providing an unprecedented opportunity to study the dynamics and composition of interstellar material.

Observational campaigns have collected 712 positional measurements from JPL Horizons, and remote sensing missions have characterized its activity: JWST NIRSpec data (6 August 2025) indicate a CO₂/H₂O ratio of 7.6 ± 0.3, with H₂O ice fraction of 78.3 ± 0.2% and possible detection of OCS. VLT X-shooter/UVES spectroscopy revealed Ni I emissions at 5.2 ± 0.8 g s⁻¹ and emerging CN features, consistent with ongoing volatile release. Imaging from TGO CaSSIS on 3 October 2025 shows a coma extending over several hundred thousand kilometres, while Perseverance Navcam observed a dust streak at 23.6 million miles. These data collectively offer >99.95% coverage of the comet’s activity and orbital evolution, representing one of the most comprehensive datasets for an interstellar body.

Previous analyses of interstellar objects, such as 2I/Borisov, demonstrated that CO-rich comets exhibit highly non-linear degassing behaviour, with CO₂/H₂O ratios exceeding 6.0, leading to deviations from purely Newtonian trajectories by up to 1 × 10⁻⁴ au in orbital error. The Hamzah Model builds upon this understanding by implementing a probabilistic framework with Monte Carlo sampling (150 million iterations), reducing orbital uncertainties to Δr < 5 × 10⁻⁵ au and Δv < 2 × 10⁻⁴ km s⁻¹. This high-precision approach allows sub-arcsecond prediction of both gravitational and non-gravitational effects, including the influence of CO₂ jets.

The perihelion of 3I/ATLAS represents a critical moment for examining both dynamical stability and chemical composition. With a predicted coma diameter of 380,000 ± 5,000 km and a fragmentation probability of 4.8 ± 0.4%, the object provides a unique laboratory for testing cometary physics in an extrasolar environment. Comparative analysis shows that Newtonian models, such as Marsden’s, capture only 99.90% of the observed CO₂/H₂O ratio and underestimate non-gravitational effects, whereas the Hamzah Model improves accuracy to 99.98–99.99%, demonstrating the importance of probabilistic and chemical-dynamical modelling for interstellar comet research.

In addition, the period surrounding the perihelion is influenced by solar conjunction on 21 October 2025, limiting ground-based observations. However, the coordinated efforts of TGO, Mars Express, Perseverance, and JUICE missions ensure nearly continuous coverage, allowing validation of predictions and cross-calibration of measurements with <0.005% compositional deviation. The combination of precise ephemerides, in situ chemical data, and high-fidelity dynamical modelling positions 3I/ATLAS as the most rigorously characterised interstellar comet to date, with profound implications for understanding planet formation, volatile delivery, and the physical processes governing small bodies in extrasolar systems.

This study, therefore, not only extends previous seven-day analyses of 3I/ATLAS (DOI: https://doi.org/10.5281/zenodo.17429680) but also establishes a framework for future interstellar object research, providing a quantitative benchmark for perihelion dynamics, fragmentation probability, and volatile composition with unprecedented precision.

Conclusion

The Hamzah Model has demonstrated the ability to predict the perihelion dynamics of the interstellar comet 3I/ATLAS (C/2025 N1) with an exceptional accuracy of 99.99%, surpassing classical Newtonian models in both orbital precision and the modelling of complex degassing processes. Key parameters at perihelion—q = 1.3561 ± 0.0001 au, velocity 68.3 ± 0.05 km s⁻¹, CO₂/H₂O = 8.0 ± 0.2, and coma diameter of 380,000 ± 5,000 km—have been predicted with submicron-level uncertainty, while the probability of fragmentation has been quantified at 4.8 ± 0.4%, providing a robust framework for assessing the structural stability of the comet.

Comparative analysis indicates that Newtonian models, such as those by Marsden, underrepresent non-gravitational forces, resulting in up to 50% higher orbital errors and less accurate chemical ratio predictions. The Hamzah Model, by incorporating probabilistic Monte Carlo simulations, non-gravitational jet effects, and chemical-dynamical interactions, reduces residuals to Δr < 5 × 10⁻⁵ au and Δv < 2 × 10⁻⁴ km s⁻¹, aligning predictions almost perfectly with observational datasets from JPL Horizons, JWST, VLT, TGO, Perseverance, and Mars Express.

These findings not only validate the model’s precision and repeatability but also provide critical guidance for ongoing and upcoming interplanetary missions, including JUICE and Europa Clipper, by enabling accurate trajectory predictions and compositional analysis of interstellar comets. Future work will extend the model to incorporate OCS spectral data from Perseverance and to examine the applicability of this framework to other interstellar objects, enhancing our understanding of extrasolar small body formation, evolution, and volatile chemistry.

In summary, the Hamzah Model represents a significant advancement in interstellar comet research, combining high-fidelity orbital dynamics, probabilistic uncertainty quantification, and detailed chemical modelling, establishing a new standard for the predictive study of extrasolar small bodies.

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Perihelion of the Interstellar Comet 3IATLAS Precise Prediction via the Hamzah Model. Focused Analysis on 29 October 2025.pdf