Your Inputs:
Distance from Impact: 2000.00 km = 1242.00 miles
Projectile Diameter: 500.00 m = 1640.00 ft = 0.31 miles
Projectile Density: 3000 kg/m3
Impact Velocity: 30.00 km/s = 18.63 miles/s
Impact Angle: 90 degrees
Target Density: 2500 kg/m3
Target Type: Sedimentary Rock
Energy:
Energy before atmospheric entry: 8.84 x 1019 Joules = 2.11 x 104 MegaTons TNT
The average interval between impacts of this size somewhere on Earth during the last 4 billion years is 2.4 x 105years
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 29.7 km/s = 18.4 miles/s
The impact energy is 8.65 x 1019 Joules = 2.07 x 104MegaTons.
The broken projectile fragments strike the ground in an ellipse of dimension 0.644 km by 0.644 km
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:
Crater shape is normal in spite of atmospheric crushing; fragments are not significantly dispersed.
Transient Crater Diameter: 8.84 km = 5.49 miles
Transient Crater Depth: 3.13 km = 1.94 miles
Final Crater Diameter: 11.8 km = 7.33 miles
Final Crater Depth: 0.622 km = 0.386 miles
The crater formed is a complex crater.
The volume of the target melted or vaporized is 0.77 km3 = 0.185 miles3
Roughly half the melt remains in the crater , where its average thickness is 12.5 meters = 41.2 feet
Thermal Radiation:
The fireball is below the horizon. There is no direct thermal radiation.
Seismic Effects:
The major seismic shaking will arrive at approximately 400 seconds.
Richter Scale Magnitude: 7.5
Ejecta:
The ejecta will arrive approximately 764 seconds after the impact.
At your position there is a fine dusting of ejecta with occasional larger fragments
Average Ejecta Thickness: 6.81 micrometers = 0.268 1/1000 of an inch
Mean Fragment Diameter: 26.7 micrometers = 1.05 1/1000 of an inch
Air Blast:
The air blast will arrive at approximately 6060 seconds.
Peak Overpressure: 780 Pa = 0.0078 bars = 0.111 psi
Max wind velocity: 1.83 m/s = 4.1 mph
Sound Intensity: 58 dB (Loud as heavy traffic)
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