When to Use Pluto-Charon Double Planet 3D Explorer - Best Sessions and Limits
Open the Pluto-Charon Double Planet 3D Explorer when you need a mutual tidal-lock lesson with an outside-primary barycenter - without a gravity-integrator desk.
An outside-barycenter lesson
An outside-barycenter lesson starts when you show that ~2,110 km from Pluto's center exceeds the 1188.3 km mean radius, so the green marker sits in empty space between the worlds.
Mass, period, and lock figures from New Horizons / JPL
Published figures land cleanly here: radii 1188.3 km / 606 km, masses 1.303e22 kg / 1.586e21 kg (~8.2:1), separation ~19,591 km, period 6.387 days, both tidally locked.
Sessions this explorer does not fit
Sessions this page does not fit are an Earth-Moon interior-barycenter deep-dive or a multi-body dwarf-planet size lineup. Use the Earth-Moon Barycenter 3D Explorer or the Dwarf Planet Comparison 3D Explorer for those sibling tasks. Walk the controls in the step-by-step guide.
Why trust these tools
- Ten-plus years of web tooling. The freetoolonline editorial team has shipped browser-based utilities since 2015. The goal has never changed: get you to a working output fast, without an install.
- No install, no sign-up. Open a tool and get a working output in seconds - nothing to download and no account to create. Tools that need heavy processing run it on our service, so even a low-powered machine gets the job done.
- Analytics stops at the page view. We measure which pages get visited, not what you type or upload inside a tool. There is nothing to sign in to and no profile is attached to your input.
- Open-source core components. The processing engines underneath (libheif, libde265, pdf-lib, terser, clean-css, ffmpeg.wasm, and others) are public and audit-able. We link to each one in its tool page's footer.
- Free, with or without ads. All tools are fully functional without sign-up. The Disable Ads button in the header is always available if you need a distraction-free run.