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In planetary classification, a class D planetoid is a type of planet. Planets of this type are generally smaller asteroids or moons that are locked into the gravitational pull of a larger planetary body. Class D worlds are usually composed of metals, predominantly nickel, iron and silicate. Bodies of this type generally do not support lifeforms. (ST references: Star Charts, The Worlds of the Federation; Last Unicorn RPG module: Star Trek: The Next Generation Core Game Book)

This classification was listed as class I 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.

Bodies of this type

Appendices

Connections

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)

Appearances and references

Appearances

References