The Human Federation has only a small territory when compared to the United Galactic Alliance. There are only a handful of key planets within the Human Federation - the rest are significantly less important and basically colonies.
Earth
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Earth, Capital of the Human Federation
Earth is the capital planet of the Human Federation. Over the last two decades, largely thanks to the HF's superior terraforming technology, it has gone from a heavily-populated world, to a beautitful city-planent. Earth has cities on both the land and underwater.
System
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Earth is in the Sol System.
Size
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Earth is a Medium-sized world. It has a population of 12 billion - 98% being Human or at least half-Human.
Atmosphere
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Thanks to construction of advanced terraforming facilities, Earth has very clean and breathable atmosphere.
Terrain
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Aproximately 70% of Earth is covered with water. The rest of the world is dominated by large continental landmasses of just about every geomorphology.
Resources
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Most of Earth's natural resources have been used up, but it is still a central hub for fresh water and clean air. Most of the industry on Earth now consists of Starship manufacturing, government, bio-technology facilities and producing terraforming technologies. There are a handful of corporations that still use Earth as a ground to produce actual products, but most of the resources have to be imported from the HF's various colonies.
Sentient Life
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Earth is the key planet of the Human Federation.
Mars
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Mars
Mars was the first planet to be successfully terraformed, and its proximity to Earth gives it a great deal of influence in Human Federation politics.
System
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Mars is in the Sol System.
Size
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Mars is a Medium-sized world. It has a population of 8 billion - 95% of which being Human or at least half-Human.
Atmosphere
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Successful terraforming has given Mars a breathable atmosphere.
Terrain
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Mars has two very small oceans - the Red Sea and the Emperor Sea - both of which only makes up 17% of the planet's surface. The rest of the world is dominated mostly by mountains, hilly plains and desert. Both poles of the planet are covered with a thick layer of snow and ice.
Resources
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Mars is a planet that is very rich in natural resources - mostly metals. There are massive iron mines that tap deep into the planet's surface, as well as other mines searching out other precious metals. Metalworks make up most of Mars' industry, but its also a major starship development/repair hub and various military-based industries.
Sentient Life
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Mars is a part of the Human Federation.
Caprica
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Caprica
System
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Caprica is in the Helios System.
Size
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Caprica is a Small-sized planet. It has a population of 4.5 billion with 90% being Human or at least half-Human.
Atmosphere
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Caprica has a breathable atmosphere.
Terrain
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Caprica has a terrain very similar to Earth's. The surface is mostly covered by massive seas and the rest of the planets landmasses represent a wide variety of geomorphologies.
Resources
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Caprica is rich in natural resources such as water, air, timber, some precious metals and gemstones. Caprica acts as the voice of the Human Federation in the Helios System, and as such, houses a grand array of government-related industry. It has also become a sort of cultural hub in the Human Federation - attracting a huge number of talented artists and musicians. It also has a very respected science & technology sector.
Sentient Life
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Caprica is a part of the Human Federation.
Persephone
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Persephone
System
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Persephone is in the Bai Hu System. The Bai Hu system is a white star system.
Size
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Persephone is a Small-sized planet. It has a population of 6 billion with 80% being Human or at least half-Human.
Atmopshere
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Persephone is a successfully terraformed planet, and has clean breathable air.
Terrain
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The world itself is 60% water - with more than 20% of that being fresh water. The rest is either mountainous or heavily forested. A lot of time, money and energy has been put into making Persephone the world it is today and the most eye-catching parts of the world are the four massive and beautiful cities that are dotted around the world, mostly by the coasts.
Resources
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Persephone is an interesting planet simply due to the amount of money that the Human Federation has put into it to make it ever successful. The money has definitely given the world a stratified social structure (it is very obvious who has money and who does not). The large, mostly-unwatched slums makes Persephone a perfect place to sell or buy black market goods. Besides the construction industry and black market, Persephone has natural resources such as fresh water, precious metals and timbers.
Sentient Life
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Persephone is a part of the Human Federation.