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Class J gas giant
| PLANETARY CLASSIFICATION | |
| Class J | |
| Classification: | gas giant |
| Age: | 2–10 billion years |
| Diameter: | 50,000–140,000 km |
| Location: | cold zone |
| Surface: | tenuous |
| Atmosphere: | zones vary in temperature, pressure, and composition |
| Lifeforms: | hydrocarbon-based |
A class J planet is a type of planet, classified as having a surface composed of gaseous hydrogen and hydrogen compounds. (ST reference: Star Charts)
 This article is a stub relating to a planet, moon or planetoid. You can help our database by expanding on it.
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Planets of this type
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- Jupiter (Sol V)
- Rigel XIII
- Saturn (Sol VI)
- Tharnos VI
