Trekipedia

Planet, Class-P

Glaciated. Age ranged from 3-10 billion years. Diameter was 10,000 to 15,000 km. Typically located in the Ecosphere of a planetary system. Water ice covered 80% or more of the surface area, atmosphere consisted of nitrogen, oxygen, and trace elements. May have contained hardy vegetation, animal life, and possibly humanoids.^[1]

Class-P Planets:

• Andoria
• Exo III

References

• ^[1]STSC: Star Trek: Star Charts