Surface access

Surface g, escape speed, parking circular speed, circ→esc Δv, and SOI estimate for any catalog body.

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

Formula

g = μ/R² · v_esc · v_circ(h)

Surface g, escape, parking orbit

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.
JPL Horizons (NASA / JPL): Solar System ephemerides and body constants.

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.

Open interactive tool · SIDUS