Published June 5, 2026 | Version v4

The Stellar Death Clock: Engineering Analysis and Desing of an Asteroid-Assisted Orbital Migration Strategy

Authors/Creators

Description

The Sun’s increasing luminosity is expected to render Earth uninhabitable within approximately 600 million years due to the breakdown of its biosphere. This paper presents a preliminary engineering analysis of an asteroid-assisted orbital migration strategy to shift Earth’s orbit outward to 1.3 AU. Using 120-km class asteroids and optimized launch windows (Venus–Earth: 170°–190°; Mars–Earth: 165°–195°), we apply Newtonian N-body approximations and patched-conic methods to evaluate momentum transfer via prograde hyperbolic encounters.


Analytical calculations, grounded in Korycansky et al. (2001), indicate that each flyby at an efficiency factor η = 0.2 (corresponding to a pericenter of ~12 Earth radii) increases Earth’s semi-major axis by approximately 21.4 km. At a sustained rate of ~400 flybys per year, the required 0.3 AU migration could be completed in roughly 5,257 years. Perturbations to Venus, Mars, and the Moon’s eccentricity appear bounded under the present simplifying assumptions and the solar gravitational damping framework.


While this study relies on simplifying assumptions and does not include full N-body integrations or propulsion details, it provides a preliminary mathematical and dynamical basis for evaluating the approach. Future work with high-fidelity simulations (e.g., REBOUND) will refine these estimates. This analysis contributes to the Stellar Death Clock framework by exploring a thermodynamically favorable pathway for long-term planetary habitability.

Notes (English)

Changelog (v2.0.0)
 
Title Change:
  • Old: The Stellar Death Clock: Analysis and Design of the Orbital Migration Solution
  • New: The Stellar Death Clock: Engineering Analysis and Design of an Asteroid-Assisted Orbital Migration Strategy
 
Summary of Major Updates:
  1. Correction of Mass Scale and Orbital Mechanics Consistency (Orders of Magnitude):
    • v1.0.0: Modeled minor asteroidal bodies of \(500\text{ m}\) to \(1\text{ km}\) (\(m = 1.41 \times 10^{11}\text{ kg}\)) yielding an analytically inconsistent \(\Delta a \approx 21.1\text{ km}\) per flyby due to a multi-order-of-magnitude calculation error.
    • v2.0.0: Upscaled the migration mechanism architecture to utilize massive \(120\text{ km}\) diameter Kuiper Belt Objects / giant comets (\(m = 2.14 \times 10^{18}\text{ kg}\)). This physically balances the momentum transfer equations, rendering the calculated \(\Delta a \approx 21.4\text{ km}\) per encounter mathematically exact and robust.
  2. Refinement of Gravitational Force Derivations:
    • Recalculated the instantaneous hyperbolic close-approach forces in Appendix 1, Sections 3.2 and 3.5. Resolved a dimensional exponent error where forces were over-scaled (\(10^{12}\text{ N}\) and \(10^{11}\text{ N}\) in v1). The updated analytical framework establishes precise baseline fields of \(4.24 \times 10^9\text{ N}\) for Venus and \(3.42 \times 10^8\text{ N}\) for Mars.
  3. Implementation of the Phase-Locking Lunar Stability Constraint:
    • v1.0.0: Assumed a generalized tidal integration yielding a baseline lunar eccentricity alteration of \(\sim 3.23 \times 10^{-8}\) per encounter without trajectory constraints.
    • v2.0.0: Introduced a sophisticated phase-locking orbital architecture. Flybys are strictly scheduled along Earth's diurnal hemisphere while the Moon remains sequestered in the nocturnal quadrant at its maximum physical distance. Earth acts as a gravitational shield and anchor, dragging the Moon adiabatically. Single flyby perturbation is refined to \(\Delta e \approx 6.61 \times 10^{-8}\), bounding cumulative secular eccentricity to a stable, safe threshold of \(e \approx 0.139\) over the project timeline.
  4. Formalization of Solar Gravitational Damping:
    • Expanded Section 3.7 to clarify N-body dissipative dynamics. Replaced the linear accumulation assumptions of v1 with a Solar Gravitational Damping framework. The Sun’s massive potential well effectively scrubs high-frequency perturbations, ensuring that the net secular shift on Venus (\(< 1\text{ km}\)) and Mars (\(< 2\text{ km}\)) remains well within natural chaotic variations.
  5. Timeline and Structural Data Recalibration:
    • Refined total structural counters across the manuscript, tables, and abstract. Total required encounters were updated from \(\sim 2,132,700\) to \(\sim 2,102,800\) flybys, adjusting the overarching migration timeframe from \(\sim 5,332\) years down to a consistent \(\sim 5,257\) years.
  6. Graphical and Typographical Enhancements:
    • Completely rebuilt Figure 2 (N-body interaction) and Figure 3 (Gravitational perturbations) using clean, standardized Mermaid rendering syntax to reflect the updated parameters. Resolved trailing language inconsistencies in mathematical fractions (e.g., changing "años" to "years" in Appendix 1).
 
 
 

Notes (English)

Changelog (v3.0.0)
 
Added
  • Statistical random walk modeling added to the lunar eccentricity accumulation analysis (\(e_{\text{rms}} \approx 9.6 \times 10^{-5}\)).
  • Asteroid recycling framework added to Section 4.2 via Jovian gravity assists to lower physical active inventory.
  • Roche limit specific clearance criteria added to the impact parameter explanation (~2.4 Earth radii for a strengthless body).
Changed
  • Abstract restructured to enhance readability, emphasizing patched-conic methods and explicit reference to Korycansky et al. (2001).
  • Terminology softened across multiple sections (e.g., replacing "enforces a strict constraint" with "reduce the risk" and "Earth functions" with "Earth may function").
  • Solar stability text expanded to explicitly conceptualize the Sun's dominant potential as a secular averaging mechanism.
Fixed
  • Equation alignment adjusted in Section 3 to clarify the projection of the fractional momentum transfer vector.
 

Notes (English)

Changelog (v4.0.0)

Added author name, institutional affiliation (Independent Researtcher, Alumnus, University of Murcia), and ORCID to the title page for preprint and repository submission (Zenodo).

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The_Stellar_Death_Clock_Engineering_Analysis_and_Design_of_an_Asteroid‑Assisted_Orbital_Migration_Strategy_v4.pdf