Heargaly

(*This was supposed to come out earlier but I was preoccupied with some other project.)*

## Discovery Information

### Discoverer

SWATH (2013)Named by Centrallia Trea (2015)

## Additional Information

### Life

Organic multicellular (marine, terrestrial)

## Heargaly's information

This is a temperate superterra with a diameter of 17402.31 miles (2.1955 R⨁), which means that the planet has a diameter around twice that of the Earth, with the mass of the planet being 8.777 M⨁, or 5.2435\*10^25 kilograms, and the density is 4.6363 grams per cubic centimeter. The oblateness of the planet is 0.0166913, with the effective temperature being 226.17 kelvin, -46.98 degrees Celsius, or -52.564 degrees Fahrenheit.  The earth similarity index of the planet is 0.800, with the albedo (bond and geom) is 0.406245 and 0.487494. The rotational period of the planet is short, with it being 11 hours, 43 minutes, and 11.51 seconds, with the solar day being 11 hours, 44 minutes, and 17.80 seconds, and the axial tilt of the planet is 70\*24’50.41”. The age of the planet is 10.410 billion years, which is double the age of our solar system, an old planet. The gravity on the poles of this giant is 18.474 meters per second, with the gravity on the equator being 17.552 meters per second, around 1 ½ of the gravity we have on Earth. The circular velocity of the planet is 9.83 miles per second, with the escape velocity being 13.90 miles per second. The planet orbits the main star in a binary system and it has an orbital period of 311.273 days. The semimajor axis of the planet is 0.88 AU, with the pericentric distance being 0.83 AU. The eccentricity of the planet is 0.059, with the inclination being 0\*50’42.53”. The ascending node of the giant world is 8\*47’29.41”, with the argument of pericenter being 112\*16’30.54”. The mean anomaly is 27\*06’33.73”, with the longitude of pericenter being 121\*03’59.95”, and the mean longitude is 148\*10’33.69”. The hill sphere radius of this giant is 0.017 AU with the influence sphere radius being 1234490.85 miles, and the Roche limit for satellites is 12160.54 miles.

The height of the atmosphere is 11.36 miles, with the tropopause height being 22476.82 feet. The height of the homogeneous atmosphere is 7580.99 feet, and the atmospheric pressure of the planet is 44.5 atm. The air density on this world is 67.875 kilograms per cubic meter, with the air temperature being 269.21 kelvin, 24.908 degrees Fahrenheit, or -3.94 degrees Celsius, and the speed of sound on this planet is 976.67 feet per second. The exosphere temperature of the planet is 1345 kelvin, with the greenhouse effect of the atmosphere is 43 kelvin, a high amount. The average molar mass in the atmosphere is 38.429, with the relative mass being 1.0742\*10^-5, and the actual mass of the atmosphere being 9.4286\*10^-5 M⨁. Carbon dioxide makes up 53.5% of the atmosphere, with oxygen making up 46.4%, and sulfur dioxide makes up the rest at 0.125% of the atmosphere. This is a massive world in terms of size and mass; it is rare for a world with multicellular life that is both marine and terrestrial and happens to be intelligent to have a size over twice that of the Earth. The terrain of the world is familiar to that of the plains worlds like Yyyalax and Calaina, and this allows for the civilizations of this world to expand their empires fast and large across the one continent on this world, a supercontinent like Pangaea. This continent is large enough that if it were placed on the Earth, it would stretch from Point Hope (Far Northwestern Alaska) to the southern seas to the southeast of New Zealand. A large continent with soft barriers between the smaller continents’ tectonic plate boundaries, though the ocean of the planet is way larger, around the surface area of a planet twice that of the Earth.

Yes, this planet has a surface area around three to four times that of the Earth. This world’s size could be explained by the low density of the materials making it up, as a planet with a higher mass is smaller in diameter. Back to the oceans of the planet: the size of the oceans allows for greater biodiversity than what we have on Earth, and there are billions of potential species in the oceans. The largest of these is a whale called Magnus Hydrogeticus (Heargaly). This whale is large enough that a small ecosystem exists on the back of it. The whale is around the size of the southern part of Mt. Everest, and there are only a few hundred of them. There seem to be large coral reefs and forests on the ocean floor, and a few of them glow due to some of the fish and plants bioluminescence, which you could see from space. I am not good at speculative biology, and I do not want to mention unimportant factoids, so onto the climate of the planet. The climate of the planet is more intense than we have on Earth, with hurricanes on average here being around a category 4–5 and heavy showers covering at least 30–40% of the planet. This could be explained by the greenhouse effect here, which is a full 10 kelvin above ours.

#### Other Designations

* SWATH 035683312
* DR/2013/08/16.SYS-012/A/S04
* IAUNC-0179421235
* Heargaly Sol A E

## Discovery Information

### Discoverer

SWATH (2013)Named by Centrallia Trea (2015)

## Additional Information

### Position in Star System

((A) 4th) 1st

The planet has a small moon around it; it is a temperate Selena, and it has an orbital period of 21 hours, 32 minutes, and 50.36 seconds. The diameter of the moon is 1416.61 miles, with the mass of the moon being 1.5737\*10^22 kilograms, or 0.0026342 M⨁. The density of the moon is 2.5659 grams per cubic centimeter, with the oblateness of the moon being 0.0114734. The effective temperature of the moon is 235.68 kelvin, -37.47 degrees Celsius, or -35.446 degrees Fahrenheit. The earth similarity index of the moon is 0.546, with the albedo (bond and geom) being 0.3 and 0.36, respectively. The rotational period of the moon is 21 hours, 32 minutes, and 50.36 seconds; it is tidally locked, with the solar day being 21 hours, 36 minutes, and 34.74 seconds. The axial tilt of the moon is 1\*39’56.36", with an age of 10.410 billion years. The gravity on the poles of the moon is 0.82793 meters per second, with the gravity on the equator being 0.80156 meters per second, or around 0.08 G. The circular velocity of the moon is 3150.68 feet per second, with the escape velocity being 4455.74 feet per second. The moon has no atmosphere to note anything about. There are a few small bases noted on the side of said moon that are closer to the parent planet than anything else.

## Star System

The star system is a binary system with the two stars being a yellow dwarf G9 V (main) and an orange dwarf star K9.5 V (secondary). The first star has 11 planets, and the second star has 10 planets, The first planet around the main star is a hot selena with a mass of 0.078004 M⨁, with the second planet being a hot desert, it has a mass of 0.37756 M⨁. The third planet in the star system is a warm gas giant with the mass of that planet being 1.7888 M♃, and the fourth planet is this one, a life bearing planet that has a size twice that of the Earth. The fifth planet in the star system is a ringed cold ice giant which has a mass of 12.459 M⨁, with the sixth planet being a dwarf planet which is a cold ice world, it has a mass of 0.017705 M⨁. The seventh planet in the star system is a ringed frozen gas giant which has a mass of 0.26735 M♃, and the eighth planet is a frozen ice world with a mass of 0.43815 M⨁. The ninth planet in the star system is a cold ice world with a mass of 2.0847 M⨁, the tenth planet is a frozen ice giant with a mass of 10.245 M⨁, and the eleventh planet is a dwarf planet, a frozen ice world, with a mass of 0.0036271 M⨁. The secondary star as previously stated is an orange dwarf and it has 10 planets.

The first planet around the second star is a hot desert with a mass of 0.15514 M⨁, with the second planet being a hot desert with a mass of 0.74098 M⨁. The third planet is a hot desert like the last one and it has a mass of 3.5456 M⨁, and the fourth planet is a cold ice giant with it having a mass of 17.816 M⨁. The fifth planet is a cold ice giant, and it has a mass of 18.894 M⨁, with the sixth planet having a mass of 0.036335 M⨁, and it is a cold ice world. The seventh planet in the star system is a frozen gas giant and it has a mass of 0.40705 M♃, and the eighth planet is a frozen ice world, and it is in a binary with another frozen ice world. The ninth planet in the star system is a frozen gas giant (superjupiter) and it has a mass of 3.1362 M♃, it is ringed and is on its side, and finally the last planet around the secondary star, a frozen ice giant with a mass of 20.877 M⨁. Oort clouds exist around both of the stars though there are no asteroid belts.

### Star System Chart

This chart is split into two parts due to the architecture of the system, it is a binary star system.