Planet/Star
Classifications
|
Class
|
Description
|
Canonical references
|
Age
(bil. yrs) |
Diameter
(1,000 kms) |
Atmosphere
|
Solar system zone
|
Lifeforms
|
|---|---|---|---|---|---|---|---|
|
Class D
|
Rocky moon/asteroid
|
Regula, Luna
|
2 to 10
|
0.1 to 4
|
negligible
|
Ecosphere
|
|
|
Class H
|
Desert
|
Nimbus III
|
4 to 10
|
8 to 15
|
Heavy gases, metal vapors
|
Ecosphere, cold
|
Drought-resistant
|
|
Class J
|
Gas giant
|
Jupiter, Saturn
|
2 to 10
|
50 to 140
|
Varying zones
|
Ecosphere, cold
|
Hydrocarbon-based
|
|
Class K
|
Adaptable
|
Mars, Mudd, Elba II
|
4 to 10
|
5 to 10
|
Carbon dioxide
|
Ecosphere
|
Single-cell organisms
|
|
Class L
|
Marginal
|
Indri VIII
|
4 to 10
|
10 to 15
|
Oxygen, argon, carbon dioxide
|
Ecosphere
|
Plants
|
|
Class M
|
Terrestrial
|
Earth, Vulcan, Bajor
|
3 to 10
|
10 to 15
|
Nitrogen, oxygen, argon, carbon
dioxide
|
Ecosphere
|
Plants/humanoid
|
|
Class O
|
Pelagic
|
3 to 10
|
10 to 15
|
nitrogen, oxygen
|
Ecosphere, Cold
|
water-based
|
|
|
Class P
|
Glaciated
|
3 to 10
|
10 to 15
|
nitrogen, oxygen
|
Cold
|
hardy plants/animals
|
|
|
Class Y
|
"Demon"
|
Silver Blood planet
|
2 to 10
|
10 to 15
|
Thermionic radiation
|
All
|
Mimetic
|
Information thanks to memory-alpha.org
