Class D planet

Class D Planetoid
Luna
Classification:	planetoid, asteroid, moon
Age:	2–10 billion years
Diameter:	100–1,000 km
Surface:	barren, metals, nickel-iron-silicate
Atmosphere:	tenuous or none
Lifeforms:	none-known

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

• Ceres
• Earth's Moon (Sol IIIa)
• Lunar V (Bajor VIIe)
• Regula
• Ursanis II
• Weytahn
• Yonada

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 desert	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

• ST reference: Star Trek Maps
• ST reference: Star Charts