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How to explore Binary Star System 3D Explorer
Open the Binary Star System 3D Explorer, pick Sirius A/B or Alpha Centauri A/B, and read the published period, masses, and eccentricity while both stars orbit the shared barycenter.
- Open https://freetoolonline.com/space-3d/binary-star-system.html and wait for the WebGL canvas to paint both stars and the yellow barycenter.
- Keep Sirius A/B selected first - period 50.13 years, masses 2.063 and 1.018 solar masses (Bond et al. 2017).
- Click the yellow barycenter to see the mass-ratio offset - the heavier primary sits closer to the shared center of mass.
- Press Pause orbit to freeze the pair, then Alpha Centauri A/B to load period 79.76 years and the 11.2-35.6 AU separation swing.
- Drag to orbit and zoom; compare eccentricity (~0.59 vs ~0.52) in the facts panel table.
Binary star system key figures
| System | Period | Masses / separation | Eccentricity |
|---|---|---|---|
| Sirius A/B | 50.13 yr | 2.063 + 1.018 solar masses | ~0.59 |
| Alpha Centauri A/B | 79.76 yr | 11.2-35.6 AU separation swing | ~0.52 |
Next: read when the explorer helps most in the when guide, or compare tools in the vs alternatives guide. Back to the Binary Star System 3D Explorer.
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