At periapsis, the Hill sphere approximates the region where satellites remain bound to the smaller body.
Hill radius
1,471,546 km
evaluated at periapsis
Prograde limit
735,773 km
rough 0.5 RH rule
Retrograde limit
1,030,082 km
rough 0.7 RH rule
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.
At periapsis, the Hill sphere approximates the region where satellites remain bound to the smaller body.
Hill radius
1,471,546 km
evaluated at periapsis
Prograde limit
735,773 km
rough 0.5 RH rule
Retrograde limit
1,030,082 km
rough 0.7 RH rule
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.