Terran Prime World

Terran prime or T-Prime worlds are worlds similar to the Terran standard type; to be classed as such, much prized as habitations, the following apply:

• Size 6-9
• Atmosphere 4-9
• Hydrographics 3-9
• Surface Gravity 0.6-1.1G.

Within this category is the more specific T-Norm or Terran Norm classification:

• Size 7—9
• Atmosphere 6—7
• Hydrographics 5-7
• Gravity 0.75-1.1G

Either of these classifications almost guarantees successful colonisation or tourist industries.

- Source: Adventure 4 Leviathan

Non-Canon

Feel free to enter further information and/or personal experiences with this planetary classification.