Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Astronomy
Meteor Shower Activity Calculator
Estimate how many meteors per hour you will actually see during a meteor shower, accounting for radiant altitude, sky darkness, and moonlight. Use it on the night of a shower to set realistic expectations.
Fill in the required fields to see your result.
Astronomy
Asteroid Impact Energy Calculator
Calculate the kinetic energy released when an asteroid strikes Earth, expressed in megatons of TNT. Use it to compare historical impacts or assess the potential effect of a hypothetical impactor.
Fill in the required fields to see your result.
Key differences
| Meteor Shower Activity Calculator | Asteroid Impact Energy Calculator | |
|---|---|---|
| Category | Astronomy | Astronomy |
| Inputs required | 4 | 4 |
| Result | Expected Hourly Rate (meteors/hour) | Impact Energy (megatons TNT) |
| What it does | Estimate how many meteors per hour you will actually see during a meteor shower, accounting for radiant altitude, sky darkness, and moonlight. Use it on the night of a shower to set realistic expectations. | Calculate the kinetic energy released when an asteroid strikes Earth, expressed in megatons of TNT. Use it to compare historical impacts or assess the potential effect of a hypothetical impactor. |