Star and Planet Classification - Revision history

Robert at 01:22, 14 January 2026

2026-01-14T01:22:44Z

← Older revision		Revision as of 01:22, 14 January 2026
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	== Federation Planetary and Stellar Classification ==		== Federation Planetary and Stellar Classification ==

	The '''Federation classification systems''' provide standardized categorizations used in Starfleet surveys, astrometric databases, and exploration logs. Stellar classes describe host stars and their habitable zones, while planetary classes detail surface conditions, atmospheres, and habitability. Together they form the basis for evaluating worlds and their potential for life.		I've decided to adapt Star Trek's classification systems. The '''Federation classification systems''' provide standardized categorizations used in Starfleet surveys, astrometric databases, and exploration logs. Stellar classes describe host stars and their habitable zones, while planetary classes detail surface conditions, atmospheres, and habitability. Together they form the basis for evaluating worlds and their potential for life.

	== Stellar Classification (Host Stars) ==		== Stellar Classification (Host Stars) ==
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	[[Category:Stars]]		[[Category:Stars]]
	[[Category:Astronomy]]		[[Category:Astronomy]]
	~~[[Category:Federation science]]~~

Robert at 01:20, 14 January 2026

2026-01-14T01:20:38Z

← Older revision		Revision as of 01:20, 14 January 2026
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	== Stellar Classification ==		== Federation Planetary and Stellar Classification ==

	The '''Federation classification systems''' provide standardized categorizations ~~for celestial bodies encountered during~~ exploration. ~~The stellar system describes the~~ host ~~star's spectral type, luminosity,~~ and ~~implications for planetary environments~~, while ~~the~~ planetary ~~system focuses on~~ surface conditions, ~~atmosphere, hydrosphere~~, and habitability.		The '''Federation classification systems''' provide standardized categorizations used in Starfleet surveys, astrometric databases, and exploration logs. Stellar classes describe host stars and their habitable zones, while planetary classes detail surface conditions, atmospheres, and habitability. Together they form the basis for evaluating worlds and their potential for life.

	~~These systems are used in Starfleet survey logs, astrometric databases, and first-contact reports.~~ Stellar ~~classes determine the stability and width of habitable zones, directly influencing which planetary classes are likely to form.~~		== Stellar Classification (Host Stars) ==

	~~===~~ Stellar ~~Classification (Host Stars) ===~~		Stellar type heavily influences planetary formation, climate stability, and habitability. G and K main-sequence stars are optimal for Class M worlds.

	~~Stellar type heavily influences planetary habitability and classification~~. ~~G and K~~ main-sequence ~~stars are optimal for Class M worlds~~.		The mnemonic for spectral types is "Oh Be A Fine Girl/Guy, Kiss Me" (OBAFGKM). Sol (Earth's Sun) is G2V: a yellow main-sequence star.

			=== Core Spectral Classes ===

	{\| class="wikitable sortable"		{\| class="wikitable sortable"
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	\|}		\|}

	==== Luminosity Classes ====		=== Luminosity Classes ===
	* V — Main-sequence (dwarfs, most habitable systems)
	* III — Giants
	* I — Supergiants
	* etc. (see full list in separate stellar classification article if needed)

	== Planetary Classification ~~(Core Classes)~~ ==		Added to spectral type (e.g., G2V):
			* '''V''' — Main-sequence/dwarfs (most common for habitable systems)
			* '''III''' — Regular giants
			* '''II''' — Bright giants
			* '''I''' — Supergiants (Ia most luminous, Ib less)
			* '''0 / Ia+''' — Hypergiants (extremely luminous, rare)
			* '''IV''' — Subgiants
			* '''VI''' — Subdwarfs
			* '''D''' — White dwarfs

			=== Sub-classes / Modifiers ===

			* '''Main-Sequence''' — Stable hydrogen-fusion core (V class default)
			* '''Giant / Supergiant''' — Evolved, expanded radius
			* '''Dwarf''' — Small, long-lived
			* '''Peculiar''' — Unusual composition (e.g., carbon-rich)
			* '''Variable''' — Pulsating or eruptive
			* '''Binary / Multiple''' — Part of multi-star system

			== Planetary Classification ==

	{\| class="wikitable sortable"		{\| class="wikitable sortable"
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	'''Verdant Class M (Oceanic-Temperate sub-class)''' (shorthand: VCM-O-T)		'''Verdant Class M (Oceanic-Temperate sub-class)''' (shorthand: VCM-O-T)

	~~This variant represents a superhabitable lush terrestrial world with amplified greenery and water features.~~

	* '''Core Class''': M (Minshara)		* '''Core Class''': M (Minshara)
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	=== Appendices ===		=== Appendices ===
	* See also: [[~~Planetary classification~~]], [[~~Stellar classification~~]], [[~~Habitable zone]], [[Class M~~]]		* See also: [[Habitable zone]], [[Class M]], [[Hertzsprung-Russell diagram]]
	* Non-canon expansions: ''Star Trek: Star Charts''		* Non-canon expansions: ''Star Trek: Star Charts''
	* Shorthand examples: G8V (stable yellow dwarf), VCM-O-T (Verdant Class M Oceanic-Temperate)		* Shorthand examples: G8V (stable yellow dwarf), VCM-O-T (Verdant Class M Oceanic-Temperate)
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	[[Category:Stars]]		[[Category:Stars]]
	[[Category:Astronomy]]		[[Category:Astronomy]]
			[[Category:Federation science]]

Robert: /* Federation Planetary and Stellar Classification */

2026-01-14T01:18:54Z

Federation Planetary and Stellar Classification

← Older revision		Revision as of 01:18, 14 January 2026
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	== ~~Federation Planetary and~~ Stellar Classification ==		== Stellar Classification ==

	The '''Federation classification systems''' provide standardized categorizations for celestial bodies encountered during exploration. The stellar system describes the host star's spectral type, luminosity, and implications for planetary environments, while the planetary system focuses on surface conditions, atmosphere, hydrosphere, and habitability.		The '''Federation classification systems''' provide standardized categorizations for celestial bodies encountered during exploration. The stellar system describes the host star's spectral type, luminosity, and implications for planetary environments, while the planetary system focuses on surface conditions, atmosphere, hydrosphere, and habitability.

Robert: /* Planetary Classification (Core Classes) */

2026-01-14T01:18:41Z

Planetary Classification (Core Classes)

← Older revision		Revision as of 01:18, 14 January 2026
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	* etc. (see full list in separate stellar classification article if needed)		* etc. (see full list in separate stellar classification article if needed)

	=== Planetary Classification (Core Classes) ===		== Planetary Classification (Core Classes) ==

	{\| class="wikitable sortable"		{\| class="wikitable sortable"

Robert at 01:18, 14 January 2026

2026-01-14T01:18:19Z

@@ Line 1: / Line 1: @@
 == Federation Planetary and Stellar Classification ==
-The '''Federation classification systems''' provide standardized categorizations for celestial bodies encountered during exploration. The planetary system focuses on surface conditions, atmosphere, hydrosphere, and habitability, while the stellar system describes the host star's spectral type, luminosity, and implications for planetary environments.
+The '''Federation classification systems''' provide standardized categorizations for celestial bodies encountered during exploration. The stellar system describes the host star's spectral type, luminosity, and implications for planetary environments, while the planetary system focuses on surface conditions, atmosphere, hydrosphere, and habitability.
-These systems are used in Starfleet survey logs, astrometric databases, and first-contact reports. Planetary classes are especially relevant for habitability assessments, while stellar classes determine the stability and width of habitable zones.
+These systems are used in Starfleet survey logs, astrometric databases, and first-contact reports. Stellar classes determine the stability and width of habitable zones, directly influencing which planetary classes are likely to form.
 === Planetary Classification (Core Classes) ===
@@ Line 76: / Line 104: @@
 From orbit: A deeper-blue marble with emerald continents veined by rivers/lakes amid azure seas. Ideal for colonization; priority for ecological surveys.
-=== Stellar Classification (Host Stars) ===
+=== Relationship Between Stellar and Planetary Classes ===
 * G/K main-sequence stars → Best for Verdant, Oceanic, Temperate Class M
 * M dwarfs → Common for Glaciated or Pelagic variants (tidal locking possible)
@@ Line 117: / Line 118: @@
 [[Category:Stars]]
 [[Category:Astronomy]]

Robert: Created page with "== Federation Planetary and Stellar Classification == The '''Federation classification systems''' provide standardized categorizations for celestial bodies encountered during exploration. The planetary system focuses on surface conditions, atmosphere, hydrosphere, and habitability, while the stellar system describes the host star's spectral type, luminosity, and implications for planetary environments. These systems are used in Starfleet survey logs, astrometric databa..."

2026-01-14T01:16:16Z

Created page with "== Federation Planetary and Stellar Classification == The '''Federation classification systems''' provide standardized categorizations for celestial bodies encountered during exploration. The planetary system focuses on surface conditions, atmosphere, hydrosphere, and habitability, while the stellar system describes the host star's spectral type, luminosity, and implications for planetary environments. These systems are used in Starfleet survey logs, astrometric databa..."

New page

== Federation Planetary and Stellar Classification ==

The '''Federation classification systems''' provide standardized categorizations for celestial bodies encountered during exploration. The planetary system focuses on surface conditions, atmosphere, hydrosphere, and habitability, while the stellar system describes the host star's spectral type, luminosity, and implications for planetary environments.

These systems are used in Starfleet survey logs, astrometric databases, and first-contact reports. Planetary classes are especially relevant for habitability assessments, while stellar classes determine the stability and width of habitable zones.

=== Planetary Classification (Core Classes) ===

{| class="wikitable sortable"
! Class !! Designation !! Key Traits !! Location/Zone !! Typical Diameter (km) !! Age (billion years) !! Life Potential !! Examples (Canon/Expanded)
|-
| A || Geothermal || Partially molten, volcanic, hydrogen compounds atmosphere || Ecosphere/Cold || 1,000–10,000 || 0–2 || None || Janus VI (conjectural)
|-
| B || Geomorteus || Molten surface, thin toxic atmosphere (helium/sodium) || Hot || 1,000–10,000 || 0–10 || None ||
|-
| C || Geoinactive || Frozen barren rock, no atmosphere || Cold || Varies || Varies || None ||
|-
| D || Barren/Plutonian || Airless rock/ice dwarf || Outer system || Small || Varies || Minimal || Regula
|-
| H || Desert || Arid, high-radiation, limited water || Hot/Ecosphere || Varies || Varies || Hardy/adaptable || Tau Cygna V
|-
| J || Gas Giant || Hydrogen/helium envelope, storms, rings || Cold || Massive || Varies || Non-humanoid (possible in layers) || Jovian analogs
|-
| K || Adaptable || Thin CO₂ atmosphere, dome-habitable || Ecosphere || Varies || Varies || Primitive ||
|-
| L || Marginal || Borderline habitable, often arid/sparse vegetation, higher CO₂ || Ecosphere || Varies || Varies || Limited ||
|-
| M || Minshara/Terrestrial || O₂/N₂ atmosphere, 20–80% water, temperate, shirt-sleeve habitable || Ecosphere || 10,000–15,000 || 3–10 || Abundant (humanoid common) || Earth, Vulcan, Qo'noS
|-
| N || Reducing/Sulfurous || Thick toxic atmosphere (Venus-like) || Hot || Varies || Varies || Limited ||
|-
| O || Pelagic || 80%+ global ocean, minimal land || Ecosphere || Varies || Varies || Aquatic dominant ||
|-
| P || Glaciated/Cryoterrestrial || 80%+ ice cover, breathable but cold || Ecosphere/Cold || 10,000–15,000 || 3–10 || Hardy vegetation/animal ||
|-
| T || Ultragiant || Massive gas supergiant, near-stellar ignition || Cold || Enormous || Varies || None ||
|-
| Y || Demon || Toxic, extreme heat (>500 K), sulfuric deserts, thermionic discharges || Hot || Varies || Varies || Lethal || "Demon" class
|}

=== Planetary Sub-classes (Modifiers) ===

Sub-classes stack as prefixes or parentheticals (e.g., Verdant Oceanic Class M). They refine core classes, especially M.

==== Common for Class M ====
* '''Verdant''' — Hyper-lush vegetation: dense forests, expansive grassy plains, high biodiversity and O₂ from photosynthesis. Superhabitable traits.
* '''Oceanic''' — High hydrosphere (75–90% water): massive oceans, archipelagos, mega-lakes, river deltas. Transitional to Class O.
* '''Arid''' — Low water (20–40%), deserts/savannas dominant.
* '''Temperate''' — Balanced mild climate, gentle seasons, varied biomes.
* '''Glacial''' — Cold-biased with ice caps/tundra but breathable.
* '''Pelagic''' — Near-ocean (80–95% water), scattered land.

==== Other examples ====
* Molten (A/B) — Active lava oceans.
* Frozen (P/C) — Deep ice, subsurface potential.
* Turbulent (J/T) — Extreme storms/rings.

=== Example: Verdant Class M (Oceanic-Temperate) ===

'''Verdant Class M (Oceanic-Temperate sub-class)''' (shorthand: VCM-O-T)

This variant represents a superhabitable lush terrestrial world with amplified greenery and water features.

* '''Core Class''': M (Minshara)
* '''Sub-classes''': Verdant, Oceanic, Temperate
* '''Atmosphere''': 78% N₂, 21–22% O₂ (elevated), trace gases
* '''Hydrosphere''': 75–85% (massive oceans, mega-lakes, wetlands)
* '''Land Biomes''': Rolling grassy plains, dense temperate forests, river-fed lakes
* '''Climate''': Warm-mild (15–22°C avg.), high precipitation, gentle seasons
* '''Gravity''': ~0.9–1.1 g
* '''Diameter''': 10,000–15,000 km
* '''Age''': 3–10 billion years
* '''Habitability''': Superhabitable; high biodiversity, fertile soils, no major extremes
* '''Life''': Abundant carbon-based flora/fauna; potential sapients

From orbit: A deeper-blue marble with emerald continents veined by rivers/lakes amid azure seas. Ideal for colonization; priority for ecological surveys.

=== Stellar Classification (Host Stars) ===

Stellar type heavily influences planetary habitability and classification. G and K main-sequence stars are optimal for Class M worlds.

{| class="wikitable sortable"
! Class !! Color !! Temperature (K) !! Key Spectral Features !! Prevalence !! Typical Planets/Habitability Notes !! Examples (Canon/Expanded)
|-
| O || Blue-violet || >30,000 || Ionized helium (He II), weak hydrogen || Very rare || Unstable radiation; unlikely habitable zones || Rigel analogs
|-
| B || Blue-white || 10,000–30,000 || Neutral helium, moderate hydrogen || Rare || Short lifetimes; hot Jupiters or barren worlds || Rigel (B8Ia)
|-
| A || White || 7,500–10,000 || Strong hydrogen (Balmer lines) || Uncommon || Moderate habitability potential || Sirius (A1V)
|-
| F || Yellow-white || 6,000–7,500 || Metals (Ca II, Fe) prominent || Common || Good for life; stable habitable zones || Procyon (F5IV-V)
|-
| G || Yellow || 5,000–6,000 || Hydrogen + metals; Sun-like || Common || Ideal for Class M planets || Sol (G2V)
|-
| K || Orange || 3,500–5,000 || Strong metals, some molecules || Very common || Long-lived; superhabitable potential || Alpha Centauri B (K1V)
|-
| M || Red || <3,500 || Titanium oxide (TiO), molecular bands || Most common || Very long-lived; close-in habitable zones possible || Proxima Centauri (M5.5Ve)
|}

==== Luminosity Classes ====
* V — Main-sequence (dwarfs, most habitable systems)
* III — Giants
* I — Supergiants
* etc. (see full list in separate stellar classification article)

=== Relationship Between Stellar and Planetary Classes ===
* G/K main-sequence stars → Best for Verdant, Oceanic, Temperate Class M
* M dwarfs → Common for Glaciated or Pelagic variants (tidal locking possible)
* O/B types → Often associated with Class J gas giants or Y demon worlds

=== Appendices ===
* See also: [[Planetary classification]], [[Stellar classification]], [[Habitable zone]], [[Class M]]
* Non-canon expansions: ''Star Trek: Star Charts''
* Shorthand examples: G8V (stable yellow dwarf), VCM-O-T (Verdant Class M Oceanic-Temperate)

[[Category:Planets]]
[[Category:Stars]]
[[Category:Astronomy]]
[[Category:Federation science]]