Spotting an Asteroid in Observations
Even the closest asteroids are so far away that they look like "dots" in the night sky - just like stars! So, you might think it is very hard to spot them, even with a big telescope.
But unlike stars, asteroids are part of our Solar System and orbit the Sun. This means that, when observing over a relatively small amount of time, asteroids seem to move quickly across the sky while stars do not.