The Passera System is one out of many stellar systems in the universe. It comprises of the host star, a Main Sequence Red Dwarf of roughly 0.5 Solar Masses, several planets and two asteroid belts, both of which have several dwarf planets.
Here are the Planets, Asteroid Belts and Dwarf Planets of the Passera System, with brief information on each.
Beti is the lone terrestrial planet of the Passera System, and is the closest planet to Passera. It is slightly larger than Mercury, with a mean radius of 2,742.4 kilometers (1704 miles) at the equator, but with a mass of only 0.5 Earths. It has no moons, and lacks an atmosphere. Likewise, temperatures fluctuates wildly, going from extremely cold to extremely hot thoughout its tidally-locked orbit.
The second Planet of the Passera System, and the one after the Capo Asteroid Belt, Tempi is a Gas Giant with a radius of 142983.1 km (88845.5 Miles), but a mass of only 304 Earths. It lacks rings surprisingly enough, but have two moons. However, it often perterbs Lesser Objects' orbits, resulting in it having several Trojan belts on its Lagrange points, and many quasimoons.
Close to the Coda Asteroid Belt, and the third planet of this system, Rithm is around 23,312 Km (14485.4 miles) in regards to its radius,and a mass of 17.2 Earths. It is an Ice Giant, with a tilted axis of 91 degrees, and extremely visible rings. Likewise, it has 6 moons.
The last planet of the Passera System, Chori is also close to the Coda Asteroid Belt, disturbing lesser bodies' orbits and capturing a few quasimoons. It is also an Ice Giant, with a radius of 25, 301 km (15721.3 miles) and a mass of 14.3 Earths. It has no rings, and a single moon.
There are two Asteroid Belts in the Passera System; the Capo Belt, and the Coda Belt. We will go though them in a bit of detail, as well as list the dwarf planets in each.
The Capo Belt is the first Asteroid Belt, located between Beti and Tempi. It is a relatively thin belt, only being around 1 AU across. Likewise, it contains four dwarf planets;
The closest dwarf planet to Passera, and the largest dwarf planet of the Passera System, Melo is extremely unique. It has a mean radius of 1452.4 km (902.5 Miles), and a mass of 0.45 Earths. It is mostly comprised of rock and silacates, unlike the dwarf planets of our SOlar System, and has a magnetosphere and a relatively thick atmosphere. In fact, if it wasn't for its small size and location within the Capo Belt, Melo would have almost certainly been a Terrestrial Planet. It also has an orbital inclination of 15 degrees, and an axial tilt of 14.5 degrees. It also has two moons, named Stanza and Candence.
In the distance pass, it seems as if human colonists visited Melo and terraformed it, bringing many odd GMOs and hybrid organisms along with them. However, as suddenly as they came, they left. Thus, these organisms were left to fend for themselves, resulting in the wide variety of unique creatures that can only be found in Melo.
With a radius of 458.2 km (284.7 Miles), Anima is one of the smallest dwarf planets of the Passera System. Its sandy-yellow colouration is due to sulfur, as it surprisingly volcanic in nature. Similar to Melo, it is comprised of mostly rock and silicates, and has a thin yet translucent atmosphere, allowing some surface features to be seen.
With a radius of 710 km (441.2 Miles), Canto has one of the most extreme orbital inclinations of Passera's dwarf planets; being around 80.2 degrees. Likewise, it has an eccentricity of 0.4, and an axial tilt of 64.9 degrees. This bizarre orbit lead many to believe that it may have been hit by another object in the past. It also has an highly reflective surface, making it very easy to spot in the night sky of Melo.
The last dwarf planet of the Capo Belt, Devoto is extremely bright, thanks to its beautiful clouds that cover the planet. It is around 700 Km (435 Miles) in radius, and is often considered to be "Anima's Twin," due to the similarities between the dwarf planets. Like Anima, Devoto is vocanically active, and the Carbon Clouds reflect as much as 95% of incoming light.
The larger of the two Asteroid Belts of the Passera System, the Coda Belt is located between Rithm and Chori. In fact, Chori almost acts as a shepard moon, "rounding" out the edge of the Coda Belt. There are also seven Dwarf Planets, which are;
With a radius of approximately 469 km (291.4 Miles) and a mass of 0.00015 Earths, Bellicoso is one of the smallest dwarf planets in the Passera System. Bellicoso also has one of the fastest rotates of any Passeran dwarf planets; Around 4.3 Earth hours. This results in a oddly pebble-like shape, similar to Haumea of our own Solar System. LIkewise, the soil of Bellicoso is also rich in iron, and coupled with the thin oxygen-dominated atmosphere, results in the vivid red colour.
Eco has a radius of around 471 Km (292.7 Miles), and a mass of 0.00017 Earths. Interestingly enough, Eco seems to potentially host a subsurface ocean, resulting in it being a potential target for research for Thylaraptor astronomers.
One of the larger dwarf planets of the Passera System, Feierlich has a radius of 1,020 Km (633.7 Miles), and a mass of 0.00201 Earths. Interestingly enough, Feierlich shares an orbit with another dwarf planet, called Getragen, with them being considered a double dwarf binary. They're also tidally locked with each other.
The other component of the Feierlich-Getragen Binary System, Getragen has a radius of 701.4 Km (435.8 Miles) and a mass of 0.0007 Earths. Getragen is also a bit darker than Feierlich, and is composed of mostly rock and silicates. Many astronomers suggest that Getragen might have been captured by Feierlich in the distant past.
The brightest dwarf planet of the Coda Belt, Luminoso is surprisingly visible in Melo's night sky, albeit quite faint. It is around 1,139.5 Km (708 Miles) in radius, with a mass of 0.00216 Earths. It is mostly comprised of ice, with an extremely thin nitrogen atmosphere. It is the coldest dwarf planet of the Passera System, being around -200 Degrees Celsius (-328 Degrees Fahrenheit).
Around 1,180 Km (733.2 Miles) in radius, Magico is the third largest dwarf planet in the Passera System. Likewise, it has a mass of 0.00219 Earths, and is comprised of mostly rock and silicates. It also has a thin but noteable oxygen-rich atmosphere. This, combined with the copper-rich soil, results in the odd bluish-green and orange colouration, making it an especially eyecatching dwarf planet.
The second largest dwarf planet of the Passera System, Nocturne has a radius of 1,261.2 Km (783.7 Miles) and a mass of 0.00341 Earths. Likewise, its surface is coated in extremely dark hydrocarbon, with the poles having tholins. Like Melo, Nocturne is mostly rock and silicates.