These orbital slots are occupied by weather satellites and communications satellites, including those used to send television signals to backyard dishes. Geosynchronous satellites are too high to watch in the same manner as low-orbit satellites. A telescope is typically necessary to spot these objects. Fortunately, their stationary position in the sky alleviates the problem of tracking these satellites in a telescope. With a little experience in watching satellites, you will come to recognize distinctive characteristics among different satellites.
Some rocket boosters are in a slow tumble, alternately presenting large, then small surface areas.
As a result, they seem to blink as they move across the sky. Other satellites may have irregular reflective surfaces causing them to give of a characteristic sparkle as they catch the sunlight. It's much easier to spot and identify a satellite if you know when and where to look. Fortunately, software for home computers is widely available to produce satellite traffic reports for any location and date.