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
