Please note: the results below are estimates based on current (limited) understanding of the impact process and come with large uncertainties; they should be used with caution, particularly in the case of peculiar input parameters. All values are given to three significant figures but this does not reflect the precision of the estimate. For more information about the uncertainty associated with our calculations and a full discussion of this program, please refer to this article
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Your Inputs:
- Distance from Impact: 1000.00 meters ( = 3280.00 feet )
- Projectile diameter: 350.00 meters ( = 1150.00 feet )
- Projectile Density: 3000 kg/m3
- Impact Velocity: 30.00 km per second ( = 18.60 miles per second )
- Impact Angle: 45 degrees
- Target Density: 2500 kg/m3
- Target Type: Sedimentary Rock
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Energy:
- Energy before atmospheric entry: 3.03 x 1019 Joules = 7.24 x 103 MegaTons TNT
- The average interval between impacts of this size somewhere on Earth during the last 4 billion years is 1.0 x 105years
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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.
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Atmospheric Entry:
- The projectile begins to breakup at an altitude of 63100 meters = 207000 ft
- The projectile reaches the ground in a broken condition. The mass of projectile strikes the surface at velocity 28.9 km/s = 17.9 miles/s
- The energy lost in the atmosphere is 2.19 x 1018 Joules = 5.24 x 102 MegaTons.
- The impact energy is 2.81 x 1019 Joules = 6.72 x 103MegaTons.
- The larger of these two energies is used to estimate the airblast damage.
- The broken projectile fragments strike the ground in an ellipse of dimension 0.949 km by 0.671 km
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Crater Dimensions:
- What does this mean?
- Crater shape is normal in spite of atmospheric crushing; fragments are not significantly dispersed.
- Transient Crater Diameter:
5.89 km ( = 3.66 miles )
- Transient Crater Depth: 2.08 km ( = 1.29 miles )
- Final Crater Diameter:
7.46 km ( = 4.63 miles )
- Final Crater Depth: 542 meters ( = 1780 feet )
- The crater formed is a complex crater.
- The volume of the target melted or vaporized is 0.177 km3 = 0.0424 miles3
- Roughly half the melt remains in the crater, where its average thickness is 6.49 meters ( = 21.3 feet ).
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Ejecta:
- What does this mean?
- Your position was inside the transient crater and ejected upon impact
