World Alliance Security Council,
As the Potentate of the Republic of Conservative Neutrals in the region on Texas I am declaring a state emergency for the entire nation of Conservative Neutrals. Our astrophysicists here have made a discovery of an asteroid named A-250 (Apophis) that is on a direct course to impact within 500 miles of our capital city. The damage and specifications are listed below as cited from the Earth Impact Effects Program at
http://impact.ese.ic.ac.uk/cgi-bin/crat ... tdens=2750.
Distance from Impact: 805.00 km ( = 500.00 miles )
Projectile diameter: 4.83 km ( = 3.00 miles )
Projectile Density: 8000 kg/m3
Impact Velocity: 17.00 km per second ( = 10.60 miles per second )
Impact Angle: 45 degrees
Target Density: 2750 kg/m3
Target Type: Crystalline Rock
Energy:
Energy before atmospheric entry: 6.81 x 1022 Joules = 1.63 x 107 MegaTons TNT
The average interval between impacts of this size somewhere on Earth during the last 4 billion years is 3.9 x 107years
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.
Crater Dimensions:
What does this mean?
Transient Crater Diameter: 48.5 km ( = 30.1 miles )
Transient Crater Depth: 17.2 km ( = 10.7 miles )
Final Crater Diameter: 80.8 km ( = 50.2 miles )
Final Crater Depth: 1.11 km ( = 0.689 miles )
The crater formed is a complex crater.
The volume of the target melted or vaporized is 428 km3 = 103 miles3
Roughly half the melt remains in the crater, where its average thickness is 232 meters ( = 760 feet ).
Thermal Radiation:
What does this mean?
Time for maximum radiation: 4.81 seconds after impact
Visible fireball radius: 30.9 km ( = 19.2 miles )
The fireball appears 8.71 times larger than the sun
Thermal Exposure: 1.32 x 107 Joules/m2
Duration of Irradiation: 17.7 minutes
Radiant flux (relative to the sun): 12.4
Effects of Thermal Radiation:
Much of the body suffers third degree burns
Newspaper ignites
Plywood flames
Deciduous trees ignite
Grass ignites
Seismic Effects:
What does this mean?
The major seismic shaking will arrive approximately 2.68 minutes after impact.
Richter Scale Magnitude: 9.4
Mercalli Scale Intensity at a distance of 805 km:
IV. Felt indoors by many, outdoors by few during the day. At night, some awakened. Dishes, windows, doors disturbed; walls make cracking sound. Sensation like heavy truck striking building. Standing motor cars rocked noticeably.
V. Felt by nearly everyone; many awakened. Some dishes, windows broken. Unstable objects overturned. Pendulum clocks may stop.
Ejecta:
What does this mean?
The ejecta will arrive approximately 7.27 minutes after the impact.
At your position there is a fine dusting of ejecta with occasional larger fragments
Average Ejecta Thickness: 9.49 cm ( = 3.74 inches )
Mean Fragment Diameter: 2.16 mm ( = 0.851 tenths of an inch )
Air Blast:
What does this mean?
The air blast will arrive approximately 40.7 minutes after impact.
Peak Overpressure: 62700 Pa = 0.627 bars = 8.9 psi
Max wind velocity: 119 m/s = 267 mph
Sound Intensity: 96 dB (May cause ear pain)
Damage Description:
Multistory wall-bearing buildings will collapse.
Wood frame buildings will almost completely collapse.
Glass windows will shatter.
Up to 90 percent of trees blown down; remainder stripped of branches and leaves.
Ladies and Gentlemen, I am proposing that we here at the World Alliance create an international space agency by the name of W.A.S.P or World Alliance Space Program to defeat this and future threats. Please think this through carefully before dismissing this cause.
Sincerely,
Ryan Gore
Potentate of the Republic of Conservative Neutrals
