Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Astronomy
Roche Limit Calculator
Find the critical orbital distance inside which a satellite is torn apart by tidal forces. Use it to understand ring formation, comet disruption, and satellite stability around planets.
Fill in the required fields to see your result.
Astronomy
Angular Size Calculator
Calculate how large a celestial object appears in the sky given its physical diameter and distance. Perfect for comparing the apparent sizes of planets, moons, nebulae, and galaxies.
Fill in the required fields to see your result.
Key differences
| Roche Limit Calculator | Angular Size Calculator | |
|---|---|---|
| Category | Astronomy | Astronomy |
| Inputs required | 3 | 2 |
| Result | Roche Limit (km) | Angular Size (arcsec) |
| What it does | Find the critical orbital distance inside which a satellite is torn apart by tidal forces. Use it to understand ring formation, comet disruption, and satellite stability around planets. | Calculate how large a celestial object appears in the sky given its physical diameter and distance. Perfect for comparing the apparent sizes of planets, moons, nebulae, and galaxies. |