Enter your variables and get back a crater size.
Here is an example output using your Inputs:
- Distance from Impact: 300.00 km ( = 186.00 miles )
- Projectile diameter: 40.00 km ( = 24.80 miles )
- Projectile Density: 8000 kg/m3
- Impact Velocity: 20.00 km per second ( = 12.40 miles per second )
- Impact Angle: 90 degrees
- Target Density: 2750 kg/m3
- Target Type: Crystalline Rock
- Energy before atmospheric entry: 5.36 x 1025 Joules = 1.28 x 10^10 MegaTons TNT
The average interval between impacts of this size is longer than the Earth's age. Such impacts could only occur during the accumulation of the Earth, between 4.5 and 4 billion years ago.
Major Global Changes:
The Earth is not strongly disturbed by the impact and loses negligible mass.The impact does not make a noticeable change in the tilt of Earth's axis (< 5 hundreths of a degree). The impact does not shift the Earth's orbit noticeably.
What does this mean?
- Transient Crater Diameter: 304 km ( = 189 miles )
- Transient Crater Depth: 108 km ( = 66.9 miles )
- Final Crater Diameter: 644 km ( = 400 miles )
- Final Crater Depth: 2.07 km ( = 1.29 miles )
The crater formed is a complex crater.
- The volume of the target melted or vaporized is 477000 km3 = 114000 miles3.
- Roughly half the melt remains in the crater, where its average thickness is 6.55 km ( = 4.07 miles ).