Your Inputs:
Distance from Impact: 805.00 km = 499.90 miles
Projectile Diameter: 80467.00 m = 263931.76 ft = 49.97 miles
Projectile Density: 8000 kg/m3
Impact Velocity: 50.00 km/s = 31.05 miles/s
Impact Angle: 45 degrees
Target Density: 2500 kg/m3
Target Type: Sedimentary Rock
Energy:
Energy before atmospheric entry: 2.73 x 1027 Joules = 6.52 x 1011 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 Earth\'s rotation period or the tilt of its axis.
The impact does not shift the Earth\'s orbit noticeably.
Crater Dimensions:
Transient Crater Diameter: 723 km = 449 miles
Transient Crater Depth: 256 km = 159 miles
Final Crater Diameter: 1710 km = 1060 miles
Final Crater Depth: 2.78 km = 1.73 miles
The crater formed is a complex crater.
The volume of the target melted or vaporized is 1.72e+07 km3 = 4.12e+06 miles3
Roughly half the melt remains in the crater , where its average thickness is 41.8 km = 26 miles
Thermal Radiation:
Time for maximum radiation: 55.9 seconds after impact
Your position is inside the fireball.
The fireball appears 775 times larger than the sun
Thermal Exposure: 1.96 x 1011 Joules/m2
Duration of Irradiation: 3630 seconds
Radiant flux (relative to the sun): 54100
Effects of Thermal Radiation:
Clothing ignites
Much of the body suffers third degree burns
Newspaper ignites
Plywood flames
Deciduous trees ignite
Grass ignites
Seismic Effects:
The major seismic shaking will arrive at approximately 161 seconds.
Richter Scale Magnitude: 12.5 (This is greater than any earthquake in recorded history)
Mercalli Scale Intensity at a distance of 805 km:
IX. General panic. Damage considerable in specially designed structures; well-designed frame structures thrown out of plumb. Damage great in substantial buildings, with partial collapse. Buildings shifted off foundations. Serious damage to reservoirs. Underground pipes broken. Conspicuous cracks in ground. In alluviated areas sand and mud ejected, earthquake fountains, sand craters.
X. Most masonry and frame structures destroyed with their foundations. Some well-built wooden structures and bridges destroyed. Serious damage to dams, dikes, embankments. Large landslides. Water thrown on banks of canals, rivers, lakes, etc. Sand and mud shifted horizontally on beaches and flat land. Rails bent slightly.
Ejecta:
The ejecta will arrive approximately 436 seconds after the impact.
Your position is in the region which collapses into the final crater.
Your position is beneath the continuous ejecta deposit.
Average Ejecta Thickness: 4670 m = 15300 ft
Air Blast:
The air blast will arrive at approximately 2440 seconds.
Peak Overpressure: 1.55e+08 Pa = 1550 bars = 22000 psi
Max wind velocity: 10000 m/s = 22400 mph
Sound Intensity: 164 dB (Dangerously Loud)
Damage Description:
Multistory wall-bearing buildings will collapse.
Wood frame buildings will almost completely collapse.
Multistory steel-framed office-type buildings will suffer extreme frame distortion, incipient collapse.
Highway truss bridges will collapse.
Highway girder bridges will collapse.
Glass windows will shatter.
Cars and trucks will be largely displaced and grossly distorted and will require rebuilding before use.
Up to 90 percent of trees blown down; remainder stripped of branches and leaves.
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