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1. #101 Class A

   Keys: Class, geothermal, A, Planet

   Enabled · Selective · Before character · Order 100 · 100%

   Entry settings

   Class A - geothermal

   Class A planets are very small, barren worlds rife with volcanic activity. This activity traps carbon dioxide in the atmosphere and keeps temperatures on Class A planets very hot, no matter the location in a star system. When the volcanic activity ceases, the planet "dies" and is then considered a Class C planet.

   AGE, 0-2 billion years DIAMETER, 1,000 - 10,000 km LOCATION, Hot Zone/Ecosphere/Cold Zone SURFACE, Partially molten, very hot ATMOSPHERE, Carbon dioxide, hydrogen EVOLUTION, Cools to become Class C LIFE FORMS, None

2. #202 Class B

   Keys: Class, Geomorteus, Planet, B

   Enabled · Selective · Before character · Order 100 · 100%

   Entry settings

   Class B - Geomorteus

   Class B planets are generally small worlds located within a star system's Hot Zone. Highly unsuited for humanoid life, Class B planets have thin atmospheres composed primarily of helium and sodium. The surface is molten and highly unstable; temperatures range from 450° in the daylight, to nearly -200° at night. No life forms have ever been observed on Class B planetoids.

   AGE, 0-10 billion years DIAMETER, 1,000 - 10,000 km LOCATION, Hot Zone SURFACE, Partially molten ATMOSPHERE, Exremely Tenuous EVOLUTION, N/A LIFE FORMS, None

3. #303 Class C

   Keys: Class, C, Geoinactive, Planet

   Enabled · Selective · Before character · Order 100 · 100%

   Entry settings

   Class C - Geoinactive

   When all volcanic activity on a Class A planet ceases, it is considered Class C. Essentially dead, these small worlds have cold, barren surfaces and possess no geological activity.

   AGE, 2-10 billion years DIAMETER, 1,000 - 10,000 km LOCATION, Hot Zone/Ecosphere/Cold Zone SURFACE, Barren ATMOSPHERE, None EVOLUTION, N/A LIFE FORMS, None

4. #404 Class D

   Keys: Class, Planet, Dwarf, D

   Enabled · Selective · Before character · Order 100 · 100%

   Entry settings

   Class D - Dwarf

   Also known as Plutonian objects, these tiny worlds are composed primarily of ice and are generally not considered true planets. Many moons and asteroids are considered Class D, as are the larger objects in a star system's Kuiper Belt. Most are not suitable for humanoid life, though many can be colonized via pressure domes.

   AGE, 2-10 billion years DIAMETER, 100 - 4,000 km LOCATION, Hot Zone/Ecosphere/Cold Zone SURFACE, Barren, Cratered ATMOSPHERE, None or Very Tenuous EVOLUTION, N/A LIFE FORMS, None

5. #505 Class E

   Keys: Class, E, Planet, Geoplastic

   Enabled · Selective · Before character · Order 100 · 100%

   Entry settings

   Class E - Geoplastic

   Class E planets represent the earliest stage in the evolution of a habitable planet. The core and crust is completely molten, making the planets susceptible to solar winds and radiation and subject to extremely high surface temperatures. The atmosphere is very thin, composed of hydrogen and helium. As the surface cools, the core and crust begin to harden, and the planet evolves into a Class F world.

   AGE, 2-10 billion years DIAMETER, 10,000 - 15,000 km LOCATION, Ecosphere SURFACE, Molten, high surface temp. ATMOSPHERE, Hydrogen compounds EVOLUTION, Cools to become Class F LIFE FORMS, Carbon cycle

6. #606 Class F

   Keys: Class, F, Geometallictic, Planet

   Enabled · Selective · Before character · Order 100 · 100%

   Entry settings

   Class F - Geometallic

   A Class E planet makes the transition to Class F once the crust and core have begun to harden. Volcanic activity is also commonplace on Class F worlds; the steam expelled from volcanic eruptions eventually condenses into water, giving rise to shallow seas in which simple bacteria thrive. When the planet's core is sufficiently cool, the volcanic activity ceases and the planet is considered Class G.

   AGE, 1-3 billion years DIAMETER, 10,000 - 15,000 km LOCATION, Ecosphere SURFACE, Volcanic, barren ATMOSPHERE, Carbon dioxide, ammonia, methane EVOLUTION, Cools to become Class G LIFE FORMS, Bacteria

7. #708 Class G

   Keys: Class, G, Geocrystalline, Planet

   Enabled · Selective · Before character · Order 100 · 100%

   Entry settings

   Class G - Geocrystalline

   After the core of a Class F planet is sufficiently cool, volcanic activity lessens and the planet is considered Class G. Oxygen and nitrogen are present in some abundance in the atmosphere, giving rise to increasingly complex organisms such as primitive vegetation like algae, and animals similar to sponges and jellyfish. As the surface cools, a Class G planet can evolve into a Class H, K, L, M, N, O, or P class world.

   AGE, 3-4 billion years DIAMETER, 10,000 - 15,000 km LOCATION, Ecosphere SURFACE, Rocky, mostly barren ATMOSPHERE, Carbon dioxide, oxygen, nitrogen EVOLUTION, Cools to Class H, K, L, M, N O, P LIFE FORMS, Vegetation, simple organisms

8. #809 Class H

   Keys: Class, Desert, Planet, H

   Enabled · Selective · Before character · Order 100 · 100%

   Entry settings

   Class H - Desert

   A planet is considered Class H if less than 20% of its surface is water. Though many Class H worlds are covered in sand, it is not required to be considered a desert; it must, however, receive little in the way of precipitation. Drought-resistant plants and animals are common on Class H worlds, and many are inhabited by humanoid populations. Most Class H worlds are hot and arid, but conditions can vary greatly.

   AGE, 4-10 billion years DIAMETER, 8,000 - 15,000 km LOCATION, Ecosphere SURFACE, Hot, arid; >20% surface water ATMOSPHERE, Oxygen, nitrogen, argon, metals EVOLUTION, n/a LIFE FORMS, Drought-resistant plants/animals

9. #910 Class I

   Keys: Ice, Class, I, Planet, Giant

   Enabled · Selective · Before character · Order 100 · 100%

   Entry settings

   Class I - Ice Giant (Uranian)

   Also known as Uranian planets, these gaseous giants have vastly different compositions from other giant worlds; the core is mostly rock and ice surrounded by a tenuous layers of methane, water, and ammonia. Additionally, the magnetic field is sharply inclined to the axis of rotation. Class I planets typically form on the fringe of a star system.

   AGE, 2-10 billion years DIAMETER, 30,000 - 100,000 km LOCATION, Cold Zone SURFACE, Rock, ice, methane, ammonia ATMOSPHERE, Hydrogen, Helium EVOLUTION, n/a LIFE FORMS, None

10. #1011 Class J

    Keys: Class, Planet, J, Giant, Gas

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class J - Gas Giant (Jovian)

    Class J planets are massive spheres of liquid and gaseous hydrogen, with small cores of metallic hydrogen. Their atmospheres are extremely turbulent, with wind speeds in the most severe storms reaching 600 kph. Many Class J planets also possess impressive ring systems, composed primarily of rock, dust, and ice. They form in the Cold Zone of a star system, though typically much closer than Class I planets.

    AGE, 2-10 billion years DIAMETER, 50,000 - 500,000 km LOCATION, Cold Zone SURFACE, Liquid metallic Hydrogen ATMOSPHERE, Hydrogen, Helium EVOLUTION, n/a LIFE FORMS, None

11. #1112 Class K

    Keys: Class, K, Adaptable, Planet

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class K - Adaptable

    Though similar in appearance to Class H worlds, Class K planets lack the robust atmosphere of their desert counterparts. Though rare, primitive single-celled organisms have been known to exist, though more complex life never evolves. Humanoid colonization is, however, possible through the use of pressure domes and in some cases, terraforming.

    AGE, 4-10 billion years DIAMETER, 5,000 - 10,000 km LOCATION, Ecosphere SURFACE, Barren, little surface water ATMOSPHERE, Thin, mostly carbon dioxide EVOLUTION, n/a LIFE FORMS, Primitive single-cell organisms

12. #1213 Class L

    Keys: Class, Marginal, L, Planet

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class L - Marginal

    Class L planets are typically rocky, forested worlds devoid of animal life. They are, however, well-suited for humanoid colonization and are prime candidates for terraforming. Water is typically scarce, and if less than 20% of the surface is covered in water, the planet is considered Class H.

    AGE, 4-10 billion years DIAMETER, 10,000 - 15,000 km LOCATION, Ecosphere SURFACE, Rocky, little surface water ATMOSPHERE, Argon, oxygen, trace elements EVOLUTION, n/a LIFE FORMS, Limited to vegetation

13. #1314 Class M

    Keys: Class, Planet, M, Terrestrial

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class M - Terrestrial

    Class M planets are robust and varied worlds composed primarily of silicate rocks, and are highly suited for humanoid life. To be considered Class M, between 20% and 80% of the surface must be covered in water; it must have a breathable oxygen-nitrogen atmosphere and temperate climate.

    AGE, 4-10 billion years DIAMETER, 10,000 - 15,000 km LOCATION, Ecosphere SURFACE, Abundant surface water, temperate climate ATMOSPHERE, Nitrogen, oxygen, argon EVOLUTION, n/a LIFE FORMS, Vegetation, animal, & humanoid

14. #1415 Class N

    Keys: Class, N, Reducing, Planet

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class N - Reducing

    Though frequently found in the Ecosphere, Class N planets are not conducive to life. The terrain is barren, with surface temperatures in excess of 500° and an atmospheric pressure more than 90 times that of a Class-M world. Additionally, the atmosphere is very dense and composed of carbon dioxide; water exists only in the form of thick,vaporous clouds that shroud most of the planet.

    AGE, 3-10 billion years DIAMETER, 10,000 - 15,000 km LOCATION, Ecosphere SURFACE, Barren, high temps. ATMOSPHERE, carbon dioxide and sulfides EVOLUTION, n/a LIFE FORMS, None

15. #1516 Class O

    Keys: Class, Planet, Pelagic, O

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class O - Pelagic

    Any planet with more than 80% of the surface covered in water is considered Class O. These worlds are usually very warm and possess vast cetacean populations in addition to tropical vegetation and animal life. Though rare, humanoid populations have also formed on Class O planets.

    AGE, 3-10 billion years DIAMETER, 10,000 - 15,000 km LOCATION, Ecosphere SURFACE, 80% water, archipelagos ATMOSPHERE, Nitrogen, oxygen, argon EVOLUTION, n/a LIFE FORMS, Cetacean, humanoid, animal

16. #1617 Class P

    Keys: Class, Glaciated, Planet, P

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class P - Glaciated

    Any planet whose surface is more than 80% frozen is considered Class P. These glaciated worlds are typically very cold, with temperatures rarely exceeding the freezing point. Though not prime conditions for life, hearty plants and animals are not uncommon, and some species, such as the Aenar and the Andorians, have evolved on Class P worlds.

    AGE, 3-10 billion years DIAMETER, 10,000 - 15,000 km LOCATION, Ecosphere SURFACE, 80% frozen water, cold ATMOSPHERE, Nitrogen, oxygen EVOLUTION, n/a LIFE FORMS, Vegitation, Animal, Humanoid

17. #1718 Class Q

    Keys: Class, Planet, Variable, Q

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class Q - Variable

    These rare planetoids typically develop with a highly eccentric orbit, or near stars with a variable output. As such, conditions on the planet's surface are widely varied. Deserts and rain forests exist within a few kilometers of each other, while glaciers can simultaneously lie very near the equator. Given the constant instability, is virtually impossible for life to exist on Class-Q worlds

    AGE, 2-10 billion years DIAMETER, 4,000 - 15,000 km LOCATION, Hot Zone/Ecosphere/Cold Zone SURFACE, Molten, frozen, jungle, etc ATMOSPHERE, Very tenuous to very dense EVOLUTION, n/a LIFE FORMS, None

18. #1819 Class R

    Keys: Class, Rogue, Planet, R

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class R - Rogue

    A Class R planet usually forms within a star system, but at some point in its evolution, the planet is expelled, likely the result of a catastrophic asteroid impact. The shift radically changes the planet's evolution; many planets merely die, but geologically active planets can sustain a habitable surface via volcanic outgassing and geothermal venting.

    AGE, 2-10 billion years DIAMETER, 4,000 - 15,000 km LOCATION, Interstellar Space SURFACE, Temperate ATMOSPHERE, Primarily Volcanic Outgassing EVOLUTION, n/a LIFE FORMS, Non-photosynthetic plants, animals

19. #1920 Class S

    Keys: Class, Planet, S, Supergiant, Gas

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class S - Gas Supergiant

    Aside from their immense size, Class S planets are very similar to their Class J counterparts, with liquid metallic hydrogen cores surrounded by a hydrogen and helium atmosphere.

    AGE, 2-10 billion years DIAMETER, 500,000 - 100,000,000 km LOCATION, Cold Zone SURFACE, Liquid metallic hydrogen ATMOSPHERE, Hydrogen and helium EVOLUTION, n/a LIFE FORMS, None

20. #2021 Class U

    Keys: Class, U, Ultragiant, Planet, Gas

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class U - Gas Ultragiant

    Class U planets represent the upper limits of planetary masses. Most exist within a star system's Cold Zone and are very similar to Class S and J planets. If they are sufficiently massive (13 times more massive than Jupiter), deuterium ignites nuclear fusion within the core, and the planet becomes a red dwarf star, creating a binary star system.

    AGE, 2-10 billion years DIAMETER, 50,000,000 - 120,000,000 km LOCATION, Cold Zone SURFACE, Liquid hydrogen, deuterium ATMOSPHERE, Hydrogen and helium EVOLUTION, Can evolve into red dwarf stars LIFE FORMS, None

21. #2122 Class X

    Keys: Class, X, Chthonian, Planet

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class X - Chthonian

    Class X planets are the result of a failed Class T planet in a star system's Hot Zone. Instead of becoming a gas giant or red dwarf star, a Class X planet was stripped of its hydrogen/helium atmosphere. The result is a small, barren world similar to a Class B planet, but with no atmosphere and an extremely dense, metal-rich core.

    AGE, 2-10 billion years DIAMETER, 1,000 - 10,000 km LOCATION, Hot Zone SURFACE, Barren, extremely hot ATMOSPHERE, None EVOLUTION, n/a LIFE FORMS, None

22. #2223 Class Y

    Keys: Class, Y, Demon, Planet

    Enabled · Selective · Before character · Order 100 · 100%

    Entry settings

    Class Y - Demon

    Perhaps the most environmentally unfriendly planets in the galaxy, Class Y planets are toxic to life in every way imaginable. The atmosphere is saturated with toxic radiation, temperatures are extreme, and atmospheric storms are amongst the most severe in the galaxy, with winds in excess of 500 kph.

    AGE, 2-10 billion years DIAMETER, 10,000 - 15,000 km LOCATION, Hot Zone SURFACE, Barren, extremely hot ATMOSPHERE, Turbulent, with toxic radiation EVOLUTION, n/a LIFE FORMS, Mimetic

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