...and wiki has a similar one
According to wiki, Taepodong-2's full speed is around 8-9km/s, and that the missile landed about 40 seconds after it was launched.
Let's do some simple maths, on the maximum distance the missile travelled. Let's assume the missile reached top speed before it landed (more likely it didn't. it would have started burning the second stage if it did, plus acceleration stopped a few seconds before it reached water surface), and let's assume only the horizontal component of the velocity (the range would be smaller for parabolic trajectory, because the horizontal component is less than 8-9km/s), then the upper bound of the distance traveled is:
- average speed x 40 sec
- = (0+8.5)/2 x 40 = 170 km
Update: Globalsecurity confirms my hypothesis here. It also showed that the S Korean claim of 499km is incorrect and "appears to be mixing the other missile flight data observations". In fact, Globalsecurity's estime is only 1.4km, confirming my suspection that a lot of the energy was given to the vertical thrust upward.
- "[Vick] is reasonably certain it was not aimed at the United States at a much higher inclination as discussed below. It ultimately impacted near the launch site infrastructure just off shore perhaps about 1.4 kilometers from the pad with perhaps 4.4 km altitude gained before collapsing into the Sea of Japan"
"TIME___ ALT___ RNGE ___VEL.
(SEC)___ (KM)____ (KM) ___(KM/SEC)
40.0 ____4.3 _____ 1.2 _____ 0.25
45.0 ____ 5.6 _____ 1.7 _____ 0.29"
4.4km above sea level is like the peak of the highest mountain in Europe/US.
1.4km is slightly less than a mile or some 5 football fields away, just barely into the ocean
0.26km/sec=260m/s = 936km/hr = 585mph, which is sub-sonic and slightly higher than the cruising speed of a 747 airliner