Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Astronomy
Lunar Phase Calculator
Calculate the Moon's current phase and illumination percentage for any calendar date. Useful for photographers, gardeners, and astronomers planning around the lunar cycle.
Fill in the required fields to see your result.
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.
Key differences
| Lunar Phase Calculator | Roche Limit Calculator | |
|---|---|---|
| Category | Astronomy | Astronomy |
| Inputs required | 3 | 3 |
| Result | Moon Illumination (%) | Roche Limit (km) |
| What it does | Calculate the Moon's current phase and illumination percentage for any calendar date. Useful for photographers, gardeners, and astronomers planning around the lunar cycle. | 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. |