Space groups such as NASA and ESA track a large number of objects near the Earth every day, and many of them have a chance to make their lives unhappy if one day they end up on a collision course with the Earth. These "potentially dangerous" asteroids regularly send the soil without problems, and the same is likely to be true on September 9, 2019.
This is when the rock called 2006 QV89, an asteroid measuring just over 160 meters wide, is set to make its closest approach to the earth for some time. Astronomers who track the object believe that it will only be as close to four million miles, but ESA says there is a very small chance that it may end up here on earth.
ESA's risk tracking database is based on models and calculations based on previous observations, and these measurements are usually very accurate. But there is always a small chance that they are not spot-on, and an even less chance that they are off with enough for an effect to occur.
For asteroid 2006 QV89, the risk of impact is narrow but present. According to ESA, the asteroid has a 1 in 7,300 chance to slaughter directly into our planet. At 164 feet wide, the asteroid is not exactly a "planet killer" and even if it struck the earth it would not be the end of the world. Yes, if it hit ground, especially in a populated area, it can do a very serious injury. If it turns offshore, it can even cause a tsunami to form.
The good news here – besides the fact that there is almost no chance of it beating on the earth – is what the rock moves closer to, it gives researchers even more time to track their circulation and plot their course with a higher degree of accuracy.