Tarsica
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| Tarsica in the Night Sky | ||
| Orbital characteristics | ||
| Semi-major axis | 384,399 km | |
| Semi-minor axis | TBD | |
| Orbital circumference | 2,413,402 km | |
| Orbital eccentricity | 0.0549 | |
| Orbit period | 27.321 582 d | |
| Average orbital speed | 1.022 km/s (2286 mph) | |
| Satellite of | Micras | |
| Physical characteristics | ||
| Radius | 1,737.103 km | |
| Circumference: | 10916 km | |
| Land/Sea Ratio | unknown:unknown | |
| Mass | 7.3477×1022 kg | |
| Density | 3,346.4 kg/m³ | |
| Surface gravity | 1.622 m/s² (0.1654 g) | |
| Escape Velocity | 2.38 km/s (5324 mph) | |
| Albedo | 0.12 | |
| Surface Temperature | 220 K (Kelvin) | |
| Adjective | Tarsican | |
Tarsica, Micras' satellite, is roughly the same size as Earth's moon, Luna. And they both share roughly the same daily orbit around their planet sister. The similarities between Luna and Tarsica end here however. Unlike Luna, Tarsica has a very thin atmosphere and a small amount of plantlife. Just enough to keep the atmosphere stable and self-replenishing. Due to Tarsica being both a satellite and having a thin atmosphere, the planet remains perpetually cold. Almost all water on the surface is frozen, and liquid water underground has to be reached by drilling. Hardy evergreen plants dominate the flora of Tarsica, its short Gorgon Pines seen bending against the harsh Tarsican winds through viewers telescopes on Micras. Other plants remain mostly scrub, clinging to rock crevices or near open water. Both the climate and atmosphere remain in a perpetual tundra.
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Species
Of fauna, Tarsica has little to none. Almost no birds are present except for small species similar to cardinals and chickadees which can survive the rigours of the cold and make their homes amid the small scrubbrush. All water on Tarsica is fresh rather than saline, attributing to most fauna clinging to the equatorial region. Of the largest species on Tarsica is the Polar Worm, an insect-like creature the size of a horse that prowls the wastes and eats grass and smaller insects. Smaller species exist, such as variants of reindeer, polar bears and other life similar to that of Micras' own Arctic. However, their numbers remain relatively small due to the low oxygen content in the atmosphere. Most animal life has adapted to this situation, such as terran mountain goats or eagles did on Micras.
A map of tarisca can be found here: http://dr-spangle.com/MCS/tarsica/oldtarsica.png
