With reference to Asteroid YR4, consider the following statements:

1. It is classified as a Potentially Hazardous Asteroid (PHA) based on its size and trajectory.

2. It was discovered by the James Webb Space Telescope in December 2024.

3. Its orbit qualifies it as a Near-Earth Object (NEO).

4. As of April 2025, it poses a 3.8% probability of colliding with the Moon in December 2032.

How many of the above statements are correct?