Orbital Mechanics Calculator

This server endpoint accepts JSON and returns JSON. Calling it sends your input to the server, including for tools whose web form normally runs locally. No key or signup is required.

curl -sX POST 'https://itsfullyonline.yunusemrevurgun.com/backend/connector-api.php?action=execute' \
  -H 'Content-Type: application/json' \
  -d '{"tool":"orbital-mechanics-calculator","data":{ /* see input fields above */ }}'

Parameters accepted by this tool:

[
    {
        "type": "number",
        "name": "central_mass_kg",
        "label": "Central Body Mass (kg)",
        "default": 5.972e+24,
        "hint": "Earth = 5.972×10²⁴ kg, Sun = 1.989×10³⁰ kg"
    },
    {
        "type": "number",
        "name": "orbit_radius_m",
        "label": "Orbit Radius (m)",
        "default": 6871000,
        "hint": "6,871,000 m = 500 km above Earth's surface"
    },
    {
        "type": "number",
        "name": "target_orbit_radius_m",
        "label": "Hohmann Transfer Target Orbit (m)",
        "hint": "Optional — leave blank to skip Hohmann transfer calc"
    },
    {
        "type": "number",
        "name": "semi_major_axis_m",
        "label": "Elliptical Semi-Major Axis (m)",
        "hint": "Optional — for Kepler ellipse calculation"
    },
    {
        "type": "number",
        "name": "eccentricity",
        "label": "Eccentricity",
        "min": 0,
        "max": 0.99,
        "default": 0,
        "hint": "0 = circular, 0–1 = elliptical"
    }
]