Algordora

(*Found a rare terra that orbits a white dwarf and extended the format.*)

## Algordora's information

This planet is a temperate marine terra with life that has a diameter of 9359.07 miles (1.907 D⨁), with a mass of 1.1687\*10^25 kilograms, or 1.9562 M⨁. The density of the planet is 6.5321 grams per cubic centimeter, with the oblateness of the planet being a perfect 0, most likely due to the lack of any moons. The effective temperature of the planet is 274.95 kelvin, 35.24 fahrenheit, or 1.8 degrees celsius, with the average temperature of the terra being 277.03 kelvin, 38.984 degrees fahrenheit, or 3.88 degrees celsius. The earth similarity index of this planet is surprisingly high, with it being 0.938, and the albedo of the terra being 0.351901. The rotational period of the planet is similar to that of its orbit, with it being 45.763 days, with the solar day being even longer with it being 137.287 days. The axial tilt of the planet is 4\*16’08.81”, with the age of the planet being also surprising, with it being only 4.641 billion years, considering its parent star. The gravity on the poles of the planet is 13.765 meters per second squared, with the gravity on the equator being the exact same due to the perfect roundness.The circular velocity of the planet is 6.33 miles per second, with the escape velocity of the planet being 8.95 miles per hour. The orbital period of the planet is 34.322 days, with the semimajor axis being 0.23 AU, and the pericentric distance being 0.22 AU. The inclination of the terra is 2\*21’22.57”, with the ascending node being 50\*05’43.38”.

The argument of pericenter is 109\*23’46.82”, with the mean anomaly being 325\*18’44.98”. The longitude of pericenter is 159\*29’30.21”, with the mean longitude of the terra being 484\*48’15.20”. The hill sphere radius of the planet is 224524.25 miles large, with the influence sphere radius of the terra being 151760.63 miles. The roche limit for any satellites of this planet is 7373 miles large. The planet’s atmosphere has a height of 53.59 miles, with the tropopause height being 5809.40 feet. The height of the homogeneous atmosphere is 15950.87 feet, with the atmospheric pressure being 0.293 atm, the atmosphere of this planet is not that much. The air density of the planet’s air is 0.45008 kilograms per cubic meter, with the air temperature being 277.03 kelvin. The speed of sound on this planet is 972.19 feet per second, with the exosphere temperature being 1288.5 kelvin. The greenhouse effect on this world is 2.0603 kelvin, with the average molar mass being 36.855. The relative mass of the atmosphere is 1.1886\*10^-7, with the real mass of the atmosphere being 2.3253\*10^-7. The atmosphere of this rare terra is 52.7% made up of carbon dioxide, some of that was contributed to by the native civilization on this planet, 37.8% nitrogen, and then oxygen, with it being only 9.38% of the atmosphere.This world is very much so a rare terra with it being one of the few worlds that have multicellular life that also orbit a white dwarf.

This terra is mostly made up of an ocean that appears to be only 6500 feet deep, which is not that much with that only being 1 mile deep on average which implies that this planet did not form with large amounts of comet bombardment, though there are some places that are deeper then 1 mile with the deepest trench being 3.8 miles deep. This planet only has two large landmasses, with the only livable land, (for humans and the majority of the native species), being a fragmented peninsula coming out of the northern continent.This peninsula has thousands of small islands and islets, and hundreds of smaller lakes and ponds. Because of this, this species is a very naval one with it getting most of its resources and food from the ocean with farming being rare and only in the inland regions. This does not mean that this species is restricted to that peninsula and its islands, with that species being able to live in the far northern and far southern icy climates of large glaciers between white peaked mountains, though they are more primitive in that region. The majority of this world’s biodiversity is in the oceans being as diverse as the Earth’s oceans.

There do not appear to be any moons around this planet, and due to that the only way for this planet to have any large tides is from the main star, but this world is mostly locked to that star, so on average the poles of  this planet have a significantly lower sea level then the rest of the planet. Due to the age of the planet, it orbiting a old white dwarf (8.77 billion years old), and white dwarfs not being a great place to develop life, one  of the theories as to how life came about here was panspermia, otherwise known as life that came from another source other than the planet it self like comets with organic compounds. This theory was discredited when in 2021 a group of researchers studied the life on this planet by looking at the compounds in the atmosphere, and the formation of the planet after the main sequence star died, they concluded that life on this world has to have originated abiogenically. This is a first for life (that we know of) to evolve around a white dwarf from a new planet, and for that life to be both multicellular and diverse with a civilization as advanced as us. The flora of this world also has a shade of light blue as the planet color.

### Gallery

This is the most flora rich part of the planet with himalaya high mountains next to lush forests.
### Moons

There do not appear to be any moons around this planet though there might have been moons in the past or during formation.

## Star System

This terra is part of a 6 planet system that orbits a spectrum DC0.7 white dwarf, with this planet being the 4th in its system. The white dwarf has a mass of 1.3773 M⨀, meaning that the original star had plenty more mass, around 4 - 5 M⨀ as an estimate. The star system does not have that many major moons, with there being only 1 in the entire system, and it is around the 3rd gas giant. This terra is located in between two gas giants and on occasion the one closer to the parent star slightly eclipses the star slightly, though it is noticeable from the surface. The largest planet in the star system has a mass of 5.621 M♃. There are 2 dwarf planets in this star system, the first planet and the last planet. The distance of the terra to the white dwarf is 0.24 AU, with the farthest planet in the system being only 0.94 AU away. There is a small asteroid belt in this star system with the first planet being part of it. There is also a large comet cloud around the star system which is normal. All of the planets in this star system are not from the original, since whatever main sequence star this white dwarf came from (F and above) would expand into a red giant larger than 0.94 AU and incinerate those planets. This is proven due to the ages of the white dwarf and the planets being around the same.