OCCULTATION

An occultation occurs when one object is hidden by another that passes between it and the observer. There are several types of occultations:

• Solar eclipse
• Planetary transit
• Planetary / moon
• Lunar / star
• Lunar / planetary
• Asteroid / star
• Exoplanet / star

The most widely known type are solar eclipses. The occultations that the PTO observes are the type when an asteroid blocks a stars light.