Extended classification system
~Miscellaneous Parameters:
CATEGORY|DESCRIPTION - ORBIT
Ikarian|High eccentricity worlds, with eccentricities above 0.35.
Circumbinary|Worlds that orbit multiple stars.
Stevensonian|Worlds that orbit a galaxy or star cluster directly.
CATEGORY|DESCRIPTION - MULTIWORLD INTERACTION
Trojan|World located at the L4 or L5 point of another world at least 25 times more massive.
Janusian|Momentum exchanging coorbital resonance of two worlds.
Satellite|Worlds that orbit other worlds, rather than a star.
Dioscuran|Satellite worlds 0.1 to 10 times the mass of the primary.
Rochean|Contact or near-contact binary Dioscuran worlds with a common envelope.
CATEGORY|DESCRIPTION - ROTATION
Skolian|Worlds with axial tilts greater than ~54 degrees, resulting in poles hotter than the equator.
Vesperian|Worlds tidally locked to their primary. Most satellites are Vesperian.
Stilbonian|Worlds in a spin resonance with their primary, Commonly Ikarian as well.
Aeolian|Fast spinning round oblate worlds with a flatness above 0.1.
Jacobian|Worlds with a triaxial elipsoid shape due to very rapid spin.
Synestian|Very rapidly rotating worlds with an extended toroidal atmosphere. Only occurs as a short 
phase after violent planetary collisions.
CATEGORY|DESCRIPTION - LIFE
Protobiotic|Worlds with prebiotic molecules, proto-life, and/or life-like systems.
Microbiotic|Worlds with microbial life.
Macrobiotic|Worlds with macroscopic colonial, multicellular, and megacellular organisms.
Neobiotic|Worlds that have had life introduced or heavily altered by sophonts.
Postbiotic|Worlds which once hosted life, but has since died out completely.
Micromechanic|Artificial mechanosystems operating entirely on microscopic scales or smaller.
Macromechanic|Artificial mechanosystems with macroscopic organisms.
CATEGORY|DESCRIPTION - PLANETARY HISTORY
Chthonian|Formerly Jovian or Neptunian worlds that have since lost most or all of their gas and ices.
Ragnarokian|Worlds that have survived their host star becoming a stellar remnant.
Odyssean|Worlds which originated in a different star system.
Phoenixian|Worlds that formed around non-main sequence stars.
Chaotian|A world still imersed in a protoplanetary disk.
Genesian|Artifically created planets and planet-like objects.

~Mass:
SUBCLASS|Mmin (e)|Mmin (j)|Mmin (kg)|DESCRIPTION|R(km)[ρ=1kg/L]|R(km)[ρ=2kg/L]|R(km)[ρ=4kg/L]|R(km)[ρ=8kg/L]|R(km)[ρ=32kg/L]
SIZE CLASS - Planetesimal
Microplanetesimal|0.00E+00|0.0|0.00E+00| |0|0|0|0|0
Subplanetesimal|1.68E-15|0.0|1.00E+10| |0.134|0.106|0.0842|0.0669|0.0421
Mesoplanetesimal|1.68E-12|0.0|1.00E+13|Rubble pile and solid body abundance crossover.|1.34|1.06|0.842|0.669|0.421
Superplanetesimal|1.68E-09|0.0|1.00E+16|Too small to have undergone differentiation, unless a fragment of a larger body.|13.4|10.6|8.42|6.68|4.21
SIZE CLASS - Planetoid
Microplanetoid|0.0000002|0.0 1.19E+18|May have formed a partially differentiated interior.|65.7|52.2|41.4|32.9|20.7
Subplanetoid|0.000001|0.0|5.97E+18|Hydrostatic equilibrium may have occured in the past, resulting in a rounded shape.|112|89.2|70.8|56.2|35.4
Mesoplanetoid|0.000005|0.0|2.99E+19| |192|153|121|96.1|60.6
Superplanetoid|0.000013|0.0|7.76E+19|Highest mass bodies that might never have been in HE.|264|210|167|132|83.3
SIZE CLASS - Dwarf; Oligarch Microdwarf|0.00005|0.0|2.99E+20|Lowest mass posible to maintain HE after formation.|414|329|261|207|130
Subdwarf|0.00025|0.0|1.49E+21| |708|562|446|354|223
Mesodwarf|0.001|0.0|5.97E+21| |1120|892|708|562|354
Superdwarf|0.005|0.0|2.99E+22| |1920|1530|1210|961|605
SIZE CLASS - Terrene
Microterrene|0.02|0.0|1.19E+23|Too large to fall out of HE. Geologically active for 10s to 100s of millions of years.|3050|2420|1920|1530|961
Subterrene|0.08|0.0|4.78E+23|Likely sustained geotechtonic activity for around a billion years after forming.|4840|3840|3050|2420|1530
Mesoterrene|0.4|0.0|2.39E+24|Can maintain H/He envelopes. Sustained geotechtonics are possible.|8280|6570|5220|4140|2610
Superterrene|2.5|0.01|1.49E+25|Techtonic plates become very unlikely in rocky worlds.|15300|12100|9610|7630|4800
SIZE CLASS - Giant
Microgiant|10|0.03|5.97E+25|Largest bodies capable of lacking any H/He envelope.|24200|19200|15300|12100|7630
Subgiant|50|0.16|2.99E+26|Past runaway gas accretion, but not massive enough to compress it well.|41400|32900|26100|20700|13000
Mesogiant|150|0.47|8.96E+26| |59700|47400|37600|29800|18800
Supergiant|500|1.57|2.99E+27|Radius begins to decrease with mass.|89200|70800|56200|44600|28100
SIZE CLASS - Planetar; Brown
Microplanetar|1430|4.5|8.54E+27|More likely to have formed through disk/gas instability.|127000|100000|79700|63300|39900
Subplanetar|4130|12.99|2.47E+28|Deuterium burning during formation. Maximum mass to form from core accretion or through white dwarf mass loss.|180000|143000|114000|90100|56800
Mesoplanetar|7950|25.01|4.75E+28|Worlds large enough to support hydrogen burning with ultrahigh metallicities.|224000|178000|141000|112000|70600
Superplanetar|20660|65.0|1.23E+29|Worlds massive enough for lithium burning, and are often stars rather than worlds.|308000|245000|194000|154000|97100
COMMENTS:
Alternative name suggestions are seperated by ;
Catagories were spaced about every 2-6 fold increase in mass
A table of possible radii for various densities is also provided using the minmimum mass for each.
Non-Solsys examples are only provided for Terran catagories and above
Brown dwarfs up to stellar mass are included. This is mostly for completion's sake, but may be a logical extention for a civilizaton where any world with enough hydrogen can be stellified.
Stellar remnants supported by electron degeneracy (ie White Dwarfs) expand as mass is removed. A maximum radius comparable to gas giants and brown dwarfs is achieved somewhere between 10 and 30 Jupiter masses, which makes the most intuitive star-planet boundary for these types of objects.

~Composition:
F-GAS|DESCRIPTION - GAS FRACTION
Jovian|Worlds mostly hydrogen and helium by mass.
Neptunian|Hydrogen and helium make up 0.1-50% of the world by mass.
Terrestrial|Less than 0.1% of the total mass comes from hydrogen or helium.
F-VOLATILES|DESCRIPTION - VOLATILE FRACTION
Ymirian|Volatiles contribute more than 67% to the solid mass of the object.
Gelidian|33-67% Volatiles
Cerean|1-33% volatiles by mass, excluding H/He.
Lapidian|Volatiles contribute less than 1% to the non-gaseous mass.
C/O|RATIO DESCRIPTION - CARBON CONTENT
Carbonic|Worlds with enough excess carbon to form a graphite or diamond rich crust. C/O above 10.
Carbidic|Worlds dominated by carbide minerals, with small amounts of carbonates. C/O ratio between 1 and 10.
Carbonatic|Worlds with a blend of carbonate, oxide, and carbide minerals. C/O ratio between 0.1 and 1.
Oxidic|Worlds dominated by oxide minerals and/or oxygen rich volatiles, C/O ratio less than 0.1.
F-CORE|DESCRIPTION - SIDEROPHILE (CORE) FRACTION
Ferrinian|Siderophile metal core more than 80% of its non-volatile mass.
Hermian|Siderophile metals make up 50-80% of the non-volatile mass.
Telluric|Worlds with metal core fractions between 15% and 50%.
Selenian|Siderophile metals make up 0-15% of the non-volatile mass.
ATMO COMP.|DESCRIPTION - ATMOSPHERIC COMPOSITION
Jotunnian|Hydrogen domianted atmopsphere
Helian|Helium dominated atmopspheres
Ydratian|Atmospheres dominated by simple hydrides (CH4, NH3, H2O, HF)
Rhean|Atmopsheres dominated by diatomic non-metals (N2, O2, F2)
Minervan|Atmospheres of other non-metal compounds (CO, CO2, SO2, NO2, HNO3, CS2, HCN)

Hephaestian|Metal and metaloid compound atmosphere (SiO2, MgO, FeO, NaCl, Na, Fe)
Edelian|Atmospheres dominated by other nobel gasses
COMMENTS:
Here the atmosphere extends from the exobase downwards until a sudden transition in either phase or chemical composition occurs. This nominally excludes the icy mantles of neptunian worlds from their atmosphere. For worlds with surface exobases, composition is measured at the surface.
It is acceptable to leave one or more compositional categories blank if they are unknown.

~Aerosols:
Aerosol Type|Temp. (K)|Min Flux|Max Flux|COMPOSITION|DESCRIPTION
Azurian - Cryothermal
CryoAzurian (#4B72BD)|0-90|0|0.008|n.a|No visible clouds and faint organic hazes.
Frigidian (#D2D5E8)|5-20|0|0.0000018|H2 Extremely cold hydrogen clouds. Very rare.
Neonean (#F0C2C2)|15-35|0.00000012|0.000075|Ne|Very cold neon clouds. Even interstellar ambient temperature can limit thier formation.
Borean (#EBD4CE)|35-60|0.000075|0.0012|N2, O2|Minimal organic hazes. Requires significant nitrogen and/or oxygen enrichments.
Methanean (#DBF1EF)|60-90|0.0012|0.008|CH4, Ar|Moderate organic hazes. Can sometimes have argon clouds.
Azurian - Mesothermal
MesoAzurian (#347299)|90-550|0.008|16|n.a|No clouds and minimal organic and organosulfur haze.
*Tholian* (#EBCC96)|*60-400*|0.0012|4.4|Organic Compounds|Organic hazes dominate over cloud layers.
Sulfanian (#FCECB8)|80-180|0.0046|0.16|H2S, NH3, (NH4)HS|Sulfur enriched ammonian worlds. Moderate organic and organosulfur hazes.
Ammonian (#FFE5CE)|80-190|0.0046|0.2|NH3, NH4HS, (NH4)2S, H2O|Moderate organic hazes. Discolored NH4HS clouds can sometimes be seen at lower levels.
Hydronian (#FAFEFD)|175-350|0.14|2.6|H2O|Water clouds with little to no haze.
Acidian (#EEEBDC)|250-500|0.64|11|H2SO4, H3PO4, NH4H4PO4, H2O|Dominated by sulfuric and/or phosphoric acid clouds and dense hazes of sulfur aerosols.
Azurian - Pyrothermal
PyroAzurian (#295C9B)|550-1300|16.5|530|n.a|No clouds and faint organosulfur and sulfur aerosols
*Sulfolian* (#CECD9F)|*400-800*|4.4|75|Organosulfur and sulfur aerosols|Dense sulfur and organosulfur haze.
*Silicolean* (#998B7E)|*550-1000*|16.5|175|Organosilicon oils, Fluorosilicones|Worlds with hazes of silicone oils, fluorosilicones, and other organometallic compounds.
Chloridian (#A7A991)|620-850|27|95|CsCl, RbCl, KCl, ZnS|Clouds of alkali chlorides and zinc sulfide. Faint surfur aerosols.
Alkalinean (#5E4F48)|800-1150|75|325|LiF, Li2S, Na2S, NaCl|Alkali and sulfide dominated clouds. Faint sulfur aerosols may be present.
Erythronian (#C28C5D)|1100-1350|275|620|Cr, MnO, MnS|Chromium and Manganese cloud species, with minimal haze of titanium oxides.
Azurian - Hyperpryothermal HyperpyroAzurian (#444CAF)|1300-2200|530|4400|n.a|Hot worlds with no vissible clouds or hazes
Enstatian (#788A8E)|1200-1700|390|1600|Fe, FeO, MgO, SiO2|Typically (Mg,Fe)SiO3 [En-Fs] and (Mg,Fe)2SiO4 [Fo-Fa] clouds. Faint TiO and TiO2 haze.
*Rutilian* (#343331)|*1400-2000*|720|3000|TiO, TiO2, VO2|Dense haze layer of titanium and vanidum oxides.
Refractian (#A77260)|1700-2300|1600|5300|Al2O3, CaO, Calcium Aluminates, Perovskites|No hazes. Gaseous titanium and vanadium oxides may cause a temperature inversion.
Carbean (#3F3124)|2000-2900|3000|13400|TiC, CaC2, VC, VC2, TiN, VN|Moderate carbon haze from dissociation of silicon carbide. Limited to carbon rich worlds.
EpistellarAzurian (#414060)|2200+|4400|n.a|Ultrahot subset of HyperpyroAzurian worlds
*Aithalian* (#1F1820)|*2600-3400*|8700|25000|C|Moderate haze of fullerenes and other carbon alotropes, overpowering any clouds present.
COMMENTS:
Aerosols become far less apparent below pressures of ~0.1 bar, and are often excluded in these cases.
Non-cloud types (Hazes, Smoke, Soot, Dust, etc.) are denoted by the use of itallics, and are much more speculative than clouds, especially at high temperatures.
Azurian typings require atmospheric pressures above ~40 bar.
Clouds at high temperatures are also speculative, and may vary greatly.
Cloud colors are only approximate, chemical impurities, stellar temperatures, and the balance between internal and external heating may have significant effects on the appearance of these worlds.

Flux values are relative to earth, and an ambient interstellar temperature of 10 Kelvin and albedo of 0 is assumed.
Stellar flux is only approximate, as it varies on albedo, atmospheric composition, internal and tidal heating, rotation period, orbital eccentricity, and axial tilt.
For worlds with long solar days or very large axial tilts, the minimum flux is 5-20% lower (0.8-0.95x) on the day side, and 25-400% greater (1.25-5x) on the night side, depending on thermal convection.

~Terrestrial types:
SURFACE TYPE|DESCRIPTION
Gaian|Earth-like worlds with liquids present on the surface.
Abyssal [Gaian]|Gaian worlds with compressable liquids (supercritical pressures and subcritical temperatures) at the surface. Near the ocean floor, geothermal activity can create large convective plumes 
of supercritical fluid, intermixing churning the still liquid oceans.
Thalassic [Gaian]|Gaian worlds with high pressure (well above the critical pressure) ices covering the seafloor.
Tohulian [Gaian]|Gaian worlds with a supercritical fluid layer atop surface liquids.
Calidian [Gaian]|Gaian worlds with atmospheres primarily in the vapor phase.
Cytherean|Venus-like worlds with a supercritical fluid layer above a solid surface. The upper atmospheres of these worlds often host virga precipitation, which evaporates before reaching the surface.
Muspellian [Cytherean]|Cytherean worlds with high pressure ices coating the surface.
Europan|Europa-like worlds with a subcrustal hydrosphere. Surface interactions, when present, more 
closely resemble techtonic activity than conventional meteorology.
Ganymedean [Europan]|Europan worlds with high pressure ices below a subcrustal hydrosphere.
Phlegethean [Europan]|Europan worlds with subsurface supercritical fluids More likely to occur on larger worlds with greater internal heating.
Agonian|Worlds with gaseous atmospheres above the triple pressure and lacking any liquids or supercritical fluids on or below the surface.
Arean|Mars-like worlds with surface pressures below the triple point of their atmosphere, but above 0.1 nanobar. Deposition and sublimation occurs directly between the surface and atmosphere, with minimal cloud and haze formation.
Chionian [Arean]|Arean worlds with an extensive surface cryosphere which undergoes plastic flow in glacial 
cells. Basal melt from under the cryosphere can be transported to the surface through a subsurface fluid table.
Apnean|Airless worlds with surface pressures below 0.1 nanobar [10E-5 Pa].
Gaian/Arean Temp. Subtypes|DESCRIPTION
Thermal|Too hot for any frozen precipitation to reach the surface. Typically very humid.
Tepidal|Temperatures low enough for snow and ice, but not for permanent acculuation in ice caps.
Tundral|Permanent accumulation of snow and ice in glaciers and ice caps.
Glacial|Global temperatures well below the freezing/deposition point
Gaian Surface Liquid Coverage|DESCRIPTION
Pelagic|More than 90% of the surface is covered by liquid.
Marine|Between 60% and 90% of the surface is covered by liquid, often as a single interconnected body.
Estuarine; Campian|Between 40% and 60% of the surface is covered by liquid.
Lacustrine|Between 10% and 40% of the surface is covered by liquid, often shallow isolated bodies.
Conlectic; Xeric|Less than 10% of the surface is covered by liquid.

~Terrestrial fluid types
TYPE|PREFIX|FLUIDS|DESCRIPTION
Aquatic|Aqua|Water|One of the most abundant fluids. As a liquid, it is usually pure or nearly pure. It is commonly a base solvent for other rarer fluids, most notably ammonia.
Amunian|Amuno|Ammonia|One of the most common fluids. It is typically found in conjuction with water as a dihydrate solution (5-33%) in Europan environments. Surface fluids are less frequent, but still rather common.
Titanian|Titano|Methane, Ethane|Usually methane and/or ethane with a sugificant amount of propane (1-10%). Other short alkanes and organic compounds are also commonly found in trace amounts.
Capnian|Capno|Carbon Dioxide|Requiring greater than 5.2 bars to form a liquid, it primarily forms arean or cytherean worlds.
Azotian|Azo|Nitrogen|Common on very cold icy bodies in arean environments. High pressure azocytherean worlds are also common, but nitrogen is rarely the dominant atmospheric species. Low pressures as a result of atmospheric condensation make surface hydrospheres rather rare.
Monoxian|Monoxo|Carbon Monoxide|More common in carbon rich systems. Often found in arean and cytherean climates.
Petrolic|Petro|Petroleum|Various hydrocarbons and organic compounds, with a composition comparable to crude oil. Can be enriched in alchols and other organic compounds.
Bitumic|Bitumo|Bitumen|High temperature version of Petrolic worlds, where the shorter and more volatile compounds have boiled off leaving long asphaltenes and parrafins. Con contain significant quantities of sulfur and organosulfur compounds.
Dionysian|Diono|Alcohols|Primarily methanol and ethanol. Is miscible with a variety of other compounds, most notably water, ammonia, and octane.
Igneous|Igneo|Magma; Metal Oxides|Non-volatile metal compounds. SiO2, MgO, FeO, as well as metallic iron are most common.
Salific|Salifo|Metal Salts|Most commonly NaCl, KCl, and NaSO4. Can also be found with metal sulfides.
Hepatic|Hepa|Hydrogen Sulfide|Common on cold sulfur rich worlds. Frequently occurs in conjuction with ammonia, forming ammonium hydrosulfide.
Phosphanic|Phosphano|Phosphine|Rare continuum usually found in solution with methanol.
Amylian|Amy|Nitrogen Oxides|Nitrogen Dioxide and/or Dinitrogen Tetroxide are the most common species.
Ionean|Io|Sulfur Oxides|Uncommon cold typically arean worlds. May occur alongside carbon dioxide in cytherean and agonian worlds, but very rarely dominates the atmosphere.
Disulfian|Disulfo|Carbon Disulfide|Most commonly found on volcanically active carbon rich worlds. It can occur with water, alcohols, oils, hydrogen sulfide, sulfur oxides, carbon dioxide, and/or elemental sulfur impurities.
Cyanic|Cyano|Hydrogen Cyanide|Sometimes occuring in place of ammonia on carbon rich worlds.
Vitriolic|Vitrio|Sulfuric Acid|Though relatively common as virga on cytherean and agonian worlds, it is far rarer as a surface liquid, and usually in a dilute aqueous solution. Intermediate concentrations (15-
75%) are rarer than high concentration solutions due to azeotropic mixing at 98%.
Phosphoric|Phospho|Phosphoric Acid|Similar to sulfuric acid, it is extremely rare for it to be found as a surface liquid. It is usually in aqueous solutions of less than 46% H3PO4.
Carbonylic|Carbonylo|Metal Carbonyls|Rather uncommon, due to the rarity of cold metallic worlds. Primarily Iron Pentacarbonyl, with traces of Nickel Tetracarbonyl.
Fortic|Forto|Nitric Acid|Primarily in an aqueous, or less commonly ammonious solution. Rarely found in 
concentrations above ~70%
Formamian|Forma|Formamide|Predominantly found with ammonia and/or formic acid, but can be found in isolation. HCN, CH3OH, and H2O are also common.
Brimstonian|Brimo|Sulfur|Frequently occurs on active sulfur rich worlds, but is usually superceded by more abundant continuums. It can be found with organosulfur compounds and metal sulfides.
Neonic|Neono|Neon|Ambient interstellar temperatures and internal heating can prevent neon condensation, making it rare even amoung Stevensonian worlds.
Hydrochloric|Chloro|Hydrogen Chloride|Primarily form in aqueous solution from biological processes in chlorine enriched worlds, as abiologic routes are much more restrictive. Highly concentrated hydrogen chloride is extremely rare as a surface liquid.
Hydrofluoric|Fluoro|Hydrogen Fluoride|They are likely to form in a similar manner to Hydrochloric worlds, though no definative natural examples of either aqueous hydrofluoric acid, or pure hydrogen fluoride are known.
COMMENTS:
Alternative name suggestions are seperated by ;
Little information on the colors of various surface conditions for various continuums. The colors are approximate at best, and are largely speculative. Stellar conditions and chemical impurities could affect the appearances of these worlds.
The full names are used when refering to the fluid independant of terrestrial type (eg, Earth is an aquatic world), whereas the prefix is used on the terrestrial type (eg, Earth is a Hydrogaian world).