In planetary classification, a class I geoplastic planet is a type of planet. Excalbia is an example of this type. (ST reference: The Worlds of the Federation)
- This classification was listed as class D as described in ST reference: Star Trek Maps, although the same chart was reprinted by Pocket Books in The Worlds of the Federation with the notation corrected.
- This classification should not be confused with the Class I gas supergiant described in ST reference: Star Charts.
Planets of this type[]
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| Planetary classification | ||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| numeric: | class 9 ("Q'tahL"-class) |
alphabetical: | class A class A geothermal class A gas giant | |||||||||||||||||||||||||||||||||||||||||||
| class B class B geomorteus class B gas giant |
class C class C geoinactive class C reducing |
class D | class E | |||||||||||||||||||||||||||||||||||||||||||
| class F class F geometallic class F geocrystalline |
class G class G geocrystalline class G silicate |
class H class H desert class H geothermal |
class I class I gas supergiant ("Q'tahL"-class) class I metallic/silicate | |||||||||||||||||||||||||||||||||||||||||||
| class J class J gas giant class J moon |
class K class K silicate/adaptable class K transjovian |
class L | class M ("Minshara"-class) class MZ | |||||||||||||||||||||||||||||||||||||||||||
| class N class N reducing class N pelagic |
class O | class P | class Q | |||||||||||||||||||||||||||||||||||||||||||
| class R | class S | class T | class Y ("Demon"-class) | |||||||||||||||||||||||||||||||||||||||||||