This article belongs to the lore of Planet Gentu.

Gentu System

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Gentu System
A true-color image of the Gentu System with sizes, but not distances, to scale. The order of the planets are from right to left.
The Sun, and planets
(distances not to scale)
Age4.931 billion years
LocationXXX
System mass1.0011 Solar masses
Nearest starTBA
Nearest known planetary systemTBA
Planetary system
Semi-major axis of outer known planet (Une'ara)35.30 AU
Distance to Kuiper cliff37 AU
Populations
Stars1 (Sun)
Known planets
Known dwarf planetsTBA
Known natural satellites2,000+
Known minor planetsTBA
Known cometsTBA
Identified rounded satellitesTBA
Orbit about Galactic Center
Invariable-to-galactic plane inclination60.19° (ecliptic)
Distance to Galactic Center27,000 ± 1,000 ly
Orbital speed220 km/s; 136 mi/s
Orbital period225–250 myr
Star-related properties
Spectral typeG2V
Frost line≈5 AU

The Gentu System is the gravitationally bound system of the Sun and the objects that orbit it. The Gentu System formed 4.9 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. The vast majority of the system's mass is in the Sun, with most of the remaining mass contained in the planet Trenas. The three inner system planets, Gumaya, Gentu, and Isthylon are terrestrial planets, being composed primarily of rock and metal. The two giant planets of the outer system, Enera and Trenas are substantially larger and more massive than the terrestrials. They are gas giants, being composed mainly of hydrogen and helium. The planet Une'ara is the outest planet of the Gentu System which, like the planets of the inner system, is composed primarily of rock and metal.

Formation

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Sun

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Planet

Inner Gentu System

Gumaya

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Gentu

Photogaphy of Gentu taken in 1999 from the Transnational Space Station.

Gentu (1 AU (150 million km; 93 million mi) from the Sun) is the largest of the inner planets, the only one known to have current geological activity, and the only place where life is known to naturally evolve. Its liquid hydrosphere is unique among the terrestrial planets, and it is the only planet where plate tectonics has been observed. Gentu's atmosphere is radically different from those of the other planets, having been altered by the presence of life to contain 21% free oxygen. The planetary magnetosphere shields the surface from solar and cosmic radiation, limiting atmospheric stripping and maintaining habitability. It has one natural satellite, Cynthia which has around 23 temporary inhabitants as of Enero of 1999.

Isthylon

Isthylon (2.1 AU (314.7 million km; 201 million mi) from the Sun) it is the 2nd largest and 1st densest of the inner planets, Isthylon has no natural satellites. The dominant geological features are impact craters or basins with ejecta blankets, lobed ridges or rupes that were probably produced by a period of contraction early in the planet's history, and volcanos such as Vounofalim. Isthylon's very tenuous atmosphere consists of solar-wind particles trapped by Isthylon's magnetic field, as well as atoms blasted off its surface by the solar wind.

Inner belt

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Outer Gentu System

Enera

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Trenas

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Une'ara

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Outer belt

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Comets

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Human discovery & exploration

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