* Appear larger: This is because the object subtends a larger angle in our field of view. Think of a car driving towards you – it appears small in the distance, but as it gets closer, it seems to grow in size.

* Become brighter: This is because more light from the object reaches our eyes. While the object's intrinsic brightness doesn't change, the closer it is, the more light we receive from it.

* Potentially have a higher angular velocity: If the object is moving across the sky, it will appear to move faster as it gets closer. This is similar to how a car speeding past you looks faster than a car moving at the same speed but farther away.

It's important to note that these changes are only apparent to the viewer. The actual size and brightness of the celestial object itself do not change.