The Neo-Babylonian Empire was a period of Mesopotamian history which began in 626 BC and ended in 539 BC. During the preceding three centuries, Babylonia had been ruled by their fellow Akkadian speakers and northern neighbours, Assyria.
In order for a satellite to successfully orbit the Earth, it must travel a horizontal distance of 8000 meters before falling a vertical distance of 5 meters. A horizontally launched projectile falls a vertical distance of 5 meters in its first second of motion.
Let's figure out what that altitude is. The equation for orbital period is: If we plug in the length of a day for (T), and plug in G and M, we can solve for r. We get an orbital radius of 42,164 km (26,199 miles). That's how high we need to put our satellite (note: that's the distance from the center of the Earth. You might see people sometimes use the distance from the surface of the Earth, which is 35,786 km (22236 miles)).