Why don't we see all the objects in the sky on the interactive map?

Why don't we see all the objects in the sky on the interactive map?

The sky map contains a part of the sky objects present in the field:
  1. The objects present in our catalog
  2. Other objects deemed large or interesting enough to be represented.
To avoid overloading, we only display the names of the 20 most interesting objects present on the map.