M43 Alpha X was a planet, the tenth planet in orbit of the M43 Alpha star system. Located in the space of the galaxy's Beta Quadrant, in Federation space at coordinates 2.02S 6.95E, M43 Alpha IX was a nondescript gas giant planet, not noted to have lifeforms of any sort present. M43 Alpha X was orbited by a 21 moons (unnamed moons) and had a ring system. (ST reference: The Worlds of the Federation)
- This world was not described in a any way except for a graphic showing the planet and its moons and rings.
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| M43 Alpha star system | ||||||||||||||||||||||||||||||||||||||||||||||
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| M43 Alpha (trinary star) • M43 Alpha I • M43 Alpha II • M43 Alpha III • IV. Ekos • V. Zeon (1 moon) • M43 Alpha VI • M43 Alpha VII • M43 Alpha VIII • M43 Alpha IX (9 moons) • M43 Alpha X (21 moons) | 
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