Sphere of Influence
Sphere of influence
924,632 km
Laplace patched-conic radius
Orbit size
149,597,871 km
secondary-body semi-major axis
SOI / orbit
0.618%
boundary size relative to orbit
Mass ratio
3.0034e-6
secondary / primary
Patched-conic boundary
The enlarged local boundary shows where a patched-conic model switches to body-centered motion.
Open Source and Easy to Use Elsewhere
This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.
Open source: review the implementation and see how the results are produced.
Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.