The Fern moon system
Table of contents
Brii

Brii as seen from space
Mass |
7.4655E22 kg (1.015 times Moon’s) |
---|---|
Radius |
1,754.48 km (1.009 times Moon’s) |
Gravity |
0.165 g |
Rotation period |
Tidally locked |
Semi-Major Axis |
52,955 km (0.137 times Moon’s) |
---|---|
Inclination |
0° |
Eccentricity |
0 |
Period |
13 h, 56 m, 52 s |
Brii is the innermost moon of Fern, and exceptionally dark, with most of its surface being covered in pitch black rock. However, this black coloration is broken up by a series of craters and large amount of ridge lines in the surface, revealing a layer of lighter rock below. The ridges are most likely formed due to tidal effects from Fern.
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I had a lot of fun making this one. Ravines go brrrrrrrrr...
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Tido

Tido as seen from space
Mass |
1.719E23 kg (2.33 times Moon’s) |
---|---|
Radius |
2,217.78 km (1.27 times Moon’s) |
Gravity |
0.23789 g |
Rotation period |
Tidally locked |
Semi-Major Axis |
81,573 km (0.21 times Moon’s) |
---|---|
Inclination |
0° |
Eccentricity |
0 |
Period |
26 h, 37 m, 46 s |
The second moon of Fern is mostly characterized by its large mass and strange purple colorations on its surface, indicating large deposits of exotic minerals.
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This was around the time when I suddenly started experiencing heavy burnout while working on this system, that lasted until I completed Nimky and Kekko. As a result, this moon is rather generic looking. Maybe one day I’ll come back to it and the rest of the moons after it.
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Prizzer

Prizzer as seen from space
Mass |
6.057E21 kg |
---|---|
Radius |
651.95 km |
Gravity |
0.1 g |
Rotation period |
Tidally locked |
Semi-Major Axis |
173,015 km |
---|---|
Inclination |
1.1° |
Longitude of Ascending Node |
36° |
Eccentricity |
0.08 |
Argument of Periapsis |
10° |
Period |
3 d, 10 h, 27 m |
Prizzer is the first of two minor moons orbiting Fern. Its mostly covered in tholin deposits in a variety of concentrations. There are also decent deposits of copper salts in Prizzer’s crust, giving some patches on it a distinct green hue.
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At this point, I had to start boosting the brightness of my screenshots. Very little light from Karat reaches here, and its a very dark place as a result. Also, nothing too impressive here either, but I at least love the colors I gave this one. There’s just a bit of emerald green in it too!
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Lilly

Lilly as seen from space
Mass |
9.2E18 kg |
---|---|
Radius |
38.8 km |
Gravity |
0.04155 g |
Rotation period |
Tidally locked |
Semi-Major Axis |
267,191 km |
---|---|
Inclination |
-28° |
Longitude of Ascending Node |
99° |
Eccentricity |
0.16 |
Argument of Periapsis |
205° |
Period |
6 d, 14 h, 15 m |
Lilly is a minor asteroid moon orbiting on the outer edge of the Fern moon system. It posesses an unusually eccentric and inclined orbit, and strange pink coloration.
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I love asteroid moons, they’re so cute. Especially when they have fun colors like this one!
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My N-Body simulation was actually NOT used here to generate the orbits. Which is bad, because I’m pretty sure I messed up the resonances of these orbits, and they desparately need to be fixed! Consider the orbital parameters listed here very WiP.
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