Hynek Classification System

HYNEK CLASSIFICATION SYSTEM A system used to categorize the various types of UFO sightings invented by Dr J. Allen Hynek. The categories are as follows...

NOCTURNAL LIGHT - Any anomalous light(s) seen in the night sky whose description rules out the possibilities of aircraft lights, stars, meteors and the like.

DAYLIGHT DISK - UFOs seen in the distant daytime sky. The UFOs classed in this category can be other shapes as well, like cigars, eggs and ovals.

RADAR-VISUALS - Where UFOs are tracked on radar and can be seen at the place illustrated at the same time.

CLOSE ENCOUNTERS...

• CE1
  ...OF THE FIRST KIND (CEI) - A UFO in close proximity (within approx 500 feet) of the witness.
• CE2
  ...OF THE SECOND KIND (CEII) - A UFO that leaves markings on the ground, causes burns or paralysis to humans, frightens animals, interferes with car engines or TV and radio reception.
• CE3
  ...OF THE THIRD KIND (CEIII) - A CEI or CEII which have visible occupants.

There are also two more unofficial classes of Close Encounter...

• CE4
  ...OF THE FOURTH KIND (CEIV) - Abduction cases.
• CE5
  ...OF THE FIFTH KIND (CEV) - Communication occurs between a person and an alien.