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conjunction

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observerly’s lightweight, zero-dependency, fully tree-shakeable, type-safe astrometry library for TypeScript. Sun, Moon, planet and satellite (SGP4) positions, IAU 2006/2000A apparent places, ICRS, ecliptic, galactic and horizontal frame transformations, and transit times, conformance-tested against ERFA (IAU SOFA) to the milliarcsecond.

  • Updated Nov 3, 2026
  • TypeScript

Synthetic CCSDS Conjunction Data Message (CDM) generator and dataset for orbital collision risk assessment, Space Situational Awareness (SSA), and 2D Foster Probability of Collision (P_c) machine learning benchmarking.

  • Updated Nov 2, 2026
  • Python

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