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The Helic Planetary Classification is a system of categorization for planets. Planet classifications have five parts: The distance from the star, the size of the planet, whether the planet has an ecosystem, how much water the planet has, and what kind of atmosphere the planet has.

The Terms[]

Distance from star(s)[]

  • Stellar: The planet is the star.
  • Local: The planet is close to the star.
  • Distant: The planet is far from the star.

For medium-distance planets, this term can be left out.


  • Small: It's a little planet.
  • Giant: The planet is huge!

For medium-size planets, this term can be left out.

Life Inhabitants[]

  • Eco: The planet has an ecosystem.
  • Inor: The planet does not have an ecosystem.


  • Hydro: Most of the planet is covered in water.
  • Terra: Most of the planet is dry land.
  • Aero: The planet is almost entirely gaseous.


  • Void: The planet has no atmosphere.
  • Arid: The planet has a caustic atmosphere.
  • Temperate: The planet has a life-supporting atmosphere.


  • A massive, dry stone planet orbiting close to a star would be a Local Giant Inorterrarid.
  • A medium-sized, airless, water-covered planet teeming with marine life and orbiting its star at about the same distance as Earth's asteroid belt orbits the sun would be an Ecohydrovoid.
  • A Jovian gas giant teeming with lighter-than-air jellyfish would be a Distant Giant Ecoaeroarid.
  • A giant space-faring turtle that swims from star to star to sunbathe is a Variable Body. That's just too weird to classify. Well, maybe it's a Stellar Ecoterravoid... unless it takes baths too.