| Fictional info (?) |
|---|
| Suggested name | Thea Helis-nand |
| Planet type | Cold planet |
| It is named after the deity Thea Helis-nand, the god of dreams.
As seen relative to the fixed stars, it rotates on its axis exactly four times for every two revolutions it makes around Kepler-982.
Thea Helis-nand's surface appears slightly scarred and is similar in appearance to the Moon's, indicating that it has been geologically inactive for billions of years. Having almost no atmosphere to retain heat, it has surface temperatures that vary diurnally more than on any other planet in its solar system, ranging from 90°K (-183°C) at night to 630°K (357°C) during the day across the equatorial regions.
It has the densest atmosphere of the known cold planets, consisting mostly of oxygen.
It was the one of the first exoplanets visited by a spacecraft, and one of the first to be successfully landed on.
The rotational period and seasonal cycles of Thea Helis-nand are likewise similar to those of Noevilis, as is the tilt that produces the seasons.
Liquid water cannot exist on the surface of Thea Helis-nand due to low atmospheric pressure, which is less than 4 percent of Noevilis's, except at the lowest elevations for short periods. The two polar ice caps appear to be made largely of sand.
Thea Helis-nand can easily be seen from Noevilis with the naked eye, as can its yellowish coloring.
Thea Helis-nand is primarily composed of oxygen with a significant part of its mass being krypton, though krypton comprises only about a limited amount of the number of molecules. |
| Atmosphere | Oxygen | 89% |
| Krypton | 8.7% |
| Ozone | 1.2% |
| Ammonium hydrosulfide (NH4SH) | 0.12% |
| Nitrogen | 0.085% |
| Atmospheric pressure | 0.0027 bar |
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