Introduction
On a faraway planet, much like our own, lived Rosohax. More scientifically known as HD 219134 to us Earth folk, the planet exists in sempiternal wonder, holding home to many... alien creatures; these creatures are much like those we see in medieval fantasy books. Whether it be the foreboding giant-folk who burrow in loose dirt or the wee fae-folk who hail from a reality all their own, it seems the mind of Rosohax's creator had a field day. Rosohax's breathing seas lead way to its shining eastward shores, called Mannus. These lands seldom see trouble, aside from the simple squabble amongst mortal kingdoms; the East consists of six of them. To the West (also called Ansi) lives a long lost cradle for life- Elenmora, destroyed by powers so ancient it remains unspoken.
The Planet
This planet overshadows the age of the one we know, its history given so much time to simmer it is barely comprehensible to any living mind. The vast lands, compared to our planet, is four and a half times larger. To this, you are also going to have a wider array of species, and much tougher landscapes to trek through. All life in the sea, soil, and sky, all are militarized by its environment.
Short summaries of the planet's composition, regions, fauna/flora, and animalia. The human recordings are the four paragraphs below. This data has been altered due to a collision with a meteor, leaving orbit records, atmosphere, temperature, and relativity to sun is inaccurate today. Planet HD 219134 b is also referred to as Rosohax.
Short summaries of the planet's composition, regions, fauna/flora, and animalia. The human recordings are the four paragraphs below. This data has been altered due to a collision with a meteor, leaving orbit records, atmosphere, temperature, and relativity to sun is inaccurate today. Planet HD 219134 b is also referred to as Rosohax.
Mass, radius, and temperature
HD 219134 b is a super-Earth, an exoplanet with a radius and mass bigger than Earth, but smaller than that of the ice giants Neptune and Uranus. Using both the radial velocity and transit method, both its mass and radius have been well determined, allowing for accurate modelling of the planet's composition. HD 219134 b has a radius of 1.602 R⊕ and a mass of 4.74 M⊕, giving it a density of about 6.4 g/cm3 and 1.85 times the gravity of Earth. This is consistent with a rocky, Earth-like composition. This is relatively unusual, as most planets of ≥1.6 R⊕ are expected to be rich in volatile materials, such as water and gas. Despite its Earth-like composition, the planet's equilibrium temperature is around 1,015 K (742 °C; 1,367 °F), far too hot for liquid water or life. Depending on the amount of cloud cover in the atmosphere of HD 219134 b, the actual temperature may be somewhat lower, but nowhere near the range for liquid water.
Hot Star
The planet orbits a (K-type) star named HR 8832, orbited by a total of five to seven planets. The star has a mass of 0.81 M☉ and a radius of 0.778 R☉. It has a temperature of 4699 K and is about 11.0 billion years old, making it one of the oldest stars. In comparison, the Sun is 4.6 billion years old and has a temperature of 5778 K.
The star's apparent magnitude, or how bright it appears from Earth's perspective, is 5. It can be seen with the naked eye
The star's apparent magnitude, or how bright it appears from Earth's perspective, is 5. It can be seen with the naked eye
Orbit
HD 219134 b orbits its host star with about 28% of the Sun's luminosity with an orbital period of 3 days and an orbital radius of about 0.03 times that of Earth's (compared to the distance of Mercury from the Sun, which is about 0.38 AU).
Atmosphere
In 2017, it was predicted that HD 219134 b and HD 219134 c likely have atmospheres that are secondary in nature, based on the compositions of the planets and the potential for atmospheric escape. For HD 219134 b, the predicted atmosphere was calculated to reach a height of about 0.18 R⊕ (~1,150 km), below the predicted height of a primordial hydrogen atmosphere (0.28 R⊕). This would indicate a secondary atmosphere produced by processes like volcanic activity and evaporation of volatile materials. However, the composition of volatile materials on HD 219134 b and c could not be accurately determined, yet it is believed that the former has a very thin gaseous envelope, far thinner than those of Uranus and Neptune.
Biomes
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Fin
© Gabriel Yeganyan for all background art used. Art otherwise used on the site will directly be credited and/or sited.
Information on planet HD 219134 b is taken from the wiki page. |