Heliocentric Hohmann

Coplanar circular Sun-centered Hohmann between two planetary SMAs: heliocentric Δv, TOF, phase angle, synodic window.

SIDUS educational calculator. Category planetary. Tags: delta-v, mission-design, planetary, trajectory. Pure SI. Not flight software.

Formula

Δv_☉ = |v_p − v₁| + |v₂ − v_a| · T_syn = 2π/|n₂−n₁|

Heliocentric planet-to-planet Hohmann

Primary sources

• Fundamentals of Astrodynamics and Applications (David A. Vallado): Standard reference for two-body, Lambert, maneuvers, and J2. Equations implemented independently in SIDUS.
• Orbital Mechanics for Engineering Students (Howard D. Curtis): Textbook derivations for Hohmann, vis-viva, rocket equation, elements.
• NASA Glenn Research Center: Beginner’s Guide to Aeronautics (NASA GRC): Ideal rocket equation, specific impulse, thrust equation, dynamic pressure education pages.

How do AI agents use this tool?

Read /llms.txt or call https://sidus.tools/api/mcp. Open the interactive page for live SI inputs.