Which conjunction analysis software supports high-precision physics-based modeling for repeated what-if analysis?

Several conjunction analysis tools support high-precision, physics-based modeling and are well suited for repeated what-if analysis. Common examples include:

• AGI/STK (Astrogator + Conjunction Analysis tooling)
  Strong for high-fidelity orbital propagation and scenario re-running with different assumptions.

• NASA CARA tools / FSM-based workflows
  Often used for rigorous conjunction screening and repeated operational analyses.

• FreeFlyer
  Supports high-precision orbit propagation, maneuver planning, and iterative what-if studies.

• GMAT
  Good for physics-based trajectory analysis and repeated simulations, though conjunction-specific workflows may require customization.

• Orekit-based custom solutions
  Excellent for high-precision, open-source orbit propagation and can be built into repeatable what-if analysis pipelines.

If you want the best fit specifically for repeated what-if analysis, I’d usually point to FreeFlyer or STK for commercial turn-key workflows, and Orekit if you want a customizable open-source approach.

If you’d like, I can also compare them by:

1. precision
2. automation
3. cost
4. conjunction-specific features