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Risi (SAF816): yellow dwarf star with 15 planets

  Roidi   Enlil   Vorti  
Psari
  Ocan  
Qetesh
 
Ardra
 
CIlah
 
CZeni
 
EVarde
 
ZRahi
 
Ankasc
  Hozo   Racta   Shalim  

Solar system 'Risi (SAF816)' comprises the star 'Risi' and the retinue of celestial objects gravitationally bound to it: 15 planets and their 1344 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'Risi', a yellow dwarf class star that contains about 99.8% of the system's known mass and dominates it gravitationally. Risi is located more than 1700 lightyears from the center of the galaxy.

This solar system comprises 15 planets

Roidi is a large terrestrial planet (7193 km radius) which orbits its star in 282 Earth days, one day on Roidi lasts 19 Earth hours. Its average temperature is 928 K (655 C), its atmosphere mainly consists of nitrogen, oxygen and it has 5 moons.

Roidi, often called 'The Ever Burning,' is the innermost planet of the Risi system. The burnt world is an Alka prison planet, with Shalim being the other. when it was first discovered Roidi was already classified as uninhabitable, but when crime was sowing ...

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Enlil is a large terrestrial planet (7865 km radius) which orbits its star in 722 Earth days, one day on Enlil lasts 19 Earth hours. Its average temperature is 531 K (258 C), its atmosphere mainly consists of nitrogen, oxygen and it has 32 moons.

Of all the inner planets Enlil was seen as the most prospective as an Alkaformed world, but after scans of the world were taken it was determined that the world was far too molten to be properly Alkaformed. The only possibility for the world to be Alkaform ...

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Vorti is a very large terrestrial planet (11919 km radius) which orbits its star in 1931 Earth days, one day on Vorti lasts 16 Earth hours. Its average temperature is 214 K (-59 C), its atmosphere mainly consists of nitrogen, oxygen and it has 42 moons.
Psari is a small terrestrial planet (4767 km radius) which orbits its star in 3547 Earth days, one day on Psari lasts 26 Earth hours. Its average temperature is 127 K (-146 C), its atmosphere mainly consists of nitrogen and it has 2 moons.

As the world was far colder then Alka many Alkani scientists searching for possible Alkaformable worlds within the Risi system believed that Psari would never make the list. They were, however, wrong; when the world was scanned it was revealed that the rin ...

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Ocan is a small terrestrial planet (3531 km radius) which orbits its star in 6518 Earth days, one day on Ocan lasts 35 Earth hours. Its average temperature is 70 K (-203 C), its atmosphere mainly consists of nitrogen, oxygen and it has 12 moons.

Roughly three and a half thousand years ago Ocan was discovered by the Alkani, natives of Alka the eighth moon of Risi. Two thousand years ago the first Ano, Alkani colony ship, reached the first planet of the system and began construction of an orbital me ...

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Qetesh is a massive terrestrial planet (16861 km radius) which orbits its star in 26066 Earth days, one day on Qetesh lasts 15 Earth hours. Its average temperature is 1927 K (1654 C), its atmosphere mainly consists of hydrogen and it has 140 moons.
Ardra is a medium gas giant (31235 km radius) which orbits its star in 47887 Earth days, one day on Ardra lasts 15 Earth hours. Its average temperature is 1890 K (1617 C), its atmosphere mainly consists of hydrogen, helium and it has 124 moons.

Resulting from an early Alkani attempt at interstellar travel involving gravitational manipulation the worlds E'Varde, C'Zeni, CIlah, Ardra collided to form a secondary binary star which resides between to once orbits of Cllah and Ardra. A less evident res ...

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CIlah is a large gas giant (52392 km radius) which orbits its star in 135540 Earth days, one day on CIlah lasts 15 Earth hours. Its average temperature is 1773 K (1500 C), its atmosphere mainly consists of hydrogen, helium and it has 158 moons.

Resulting from an early Alkani attempt at interstellar travel involving gravitational manipulation the worlds E'Varde, C'Zeni, CIlah, Ardra collided to form a secondary binary star which resides between to once orbits of Cllah and Ardra. A less evident res ...

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CZeni is a medium gas giant (30447 km radius) which orbits its star in 249004 Earth days, one day on CZeni lasts 15 Earth hours. Its average temperature is 1304 K (1031 C), its atmosphere mainly consists of hydrogen and it has 113 moons.

Resulting from an early Alkani attempt at interstellar travel involving gravitational manipulation the worlds E'Varde, C'Zeni, CIlah, Ardra collided to form a secondary binary star which resides between to once orbits of Cllah and Ardra. A less evident res ...

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EVarde is a large gas giant (56551 km radius) which orbits its star in 457449 Earth days, one day on EVarde lasts 15 Earth hours. Its average temperature is 1384 K (1111 C), its atmosphere mainly consists of hydrogen and it has 169 moons.

Resulting from an early Alkani attempt at interstellar travel involving gravitational manipulation the worlds E'Varde, C'Zeni, CIlah, Ardra collided to form a secondary binary star which resides between to once orbits of Cllah and Ardra. A less evident res ...

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ZRahi is a massive terrestrial planet (17832 km radius) which orbits its star in 840388 Earth days, one day on ZRahi lasts 15 Earth hours. Its average temperature is 1860 K (1587 C), its atmosphere mainly consists of hydrogen, helium and it has 60 moons.
Ankasc is a medium terrestrial planet (6522 km radius) which orbits its star in 1543892 Earth days, one day on Ankasc lasts 20 Earth hours. Its average temperature is 1373 K (1100 C), its atmosphere mainly consists of hydrogen and it has 168 moons.
Hozo is a large gas giant (67276 km radius) which orbits its star in 2836311 Earth days, one day on Hozo lasts 15 Earth hours. Its average temperature is 1716 K (1443 C), its atmosphere mainly consists of hydrogen and it has 177 moons.

Racta is a medium gas giant (23150 km radius) which orbits its star in 5210636 Earth days, one day on Racta lasts 15 Earth hours. Its average temperature is 1106 K (833 C), its atmosphere mainly consists of hydrogen, helium and it has 103 moons.
Shalim is a medium terrestrial planet (6288 km radius) which orbits its star in 6849558 Earth days, one day on Shalim lasts 21 Earth hours. Its average temperature is 1121 K (848 C), its atmosphere mainly consists of and it has 39 moons.

Being the furthest planet of the Risi star system Shalim is one of is coldest bodies. This characteristic dropped the planet from the list of Alkaformable worlds and promoted the construction of the Frozen Continent Prison Complex. The Prison was later exp ...

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More planetary details...

Location

Planetary Orbits

Contributors

User 'griffinsteel' updated this system june 10, 2014.
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Planetary Statistics

planet:RoidiEnlilVortiPsariOcan
distance from star:58*106 km109*106 km210*106 km316*106 km474*106 km
radius:7193 km7865 km11919 km4767 km3531 km
mass:2977*1021 kg3892*1021 kg13545*1021 kg866*1021 kg352*1021 kg
surface gravity: 3.84 m/s2
0.39 Earths
4.19 m/s2
0.42 Earths
6.36 m/s2
0.65 Earths
2.54 m/s2
0.25 Earths
1.88 m/s2
0.19 Earths
escape velocity:7.432 km/s8.127 km/s12.31 km/s4.924 km/s3.647 km/s
year: 356 Roidi days
282 Earth days
912 Enlil days
722 Earth days
2896 Vorti days
1931 Earth days
3274 Psari days
3547 Earth days
4469 Ocan days
6518 Earth days
day:19 hrs19 hrs16 hrs26 hrs35 hrs
axial tilt:29°22°13°16°24°
temperature:928 K
655 C
531 K
258 C
214 K
-59 C
127 K
-146 C
70 K
-203 C
atmosphere:82% N2
15% O2
3% CO2
0% other
1% H2
1% He
60% N2
38% O2
0% other
82% N2
15% O2
3% CO2
0% other
88% N2
5% O2
7% CO2
0% other
57% N2
42% O2
1% CO2
0% other
moons:53242212
rings:00030

planet:QeteshArdraCIlahCZeniEVarde
distance from star:1194*106 km1792*106 km3585*106 km5378*106 km8068*106 km
radius:16861 km31235 km52392 km30447 km56551 km
mass:38347*1021 kg243789*1021 kg1150495*1021 kg225799*1021 kg1446807*1021 kg
surface gravity: 9.00 m/s2
0.92 Earths
16.6 m/s2
1.69 Earths
27.9 m/s2
2.85 Earths
16.2 m/s2
1.65 Earths
30.1 m/s2
3.07 Earths
escape velocity:17.42 km/s32.27 km/s54.14 km/s31.46 km/s58.43 km/s
year: 41705 Qetesh days
26066 Earth days
76619 Ardra days
47887 Earth days
216864 CIlah days
135540 Earth days
398406 CZeni days
249004 Earth days
731918 EVarde days
457449 Earth days
day:15 hrs15 hrs15 hrs15 hrs15 hrs
axial tilt:23°
temperature:1927 K
1654 C
1890 K
1617 C
1773 K
1500 C
1304 K
1031 C
1384 K
1111 C
atmosphere:96% H2
4% He
0% other
77% H2
23% He
0% other
76% H2
24% He
0% other
95% H2
5% He
0% other
94% H2
6% He
0% other
moons:140124158113169
rings:161310137

planet:ZRahiAnkascHozoRactaShalim
distance from star:12102*106 km18153*106 km27230*106 km40846*106 km49015*106 km
radius:17832 km6522 km67276 km23150 km6288 km
mass:45361*1021 kg2219*1021 kg2435961*1021 kg99252*1021 kg1988*1021 kg
surface gravity: 9.52 m/s2
0.97 Earths
3.48 m/s2
0.35 Earths
35.9 m/s2
3.67 Earths
12.3 m/s2
1.25 Earths
3.35 m/s2
0.34 Earths
escape velocity:18.42 km/s6.739 km/s69.52 km/s23.92 km/s6.496 km/s
year: 1344620 ZRahi days
840388 Earth days
1852670 Ankasc days
1543892 Earth days
4538097 Hozo days
2836311 Earth days
8337017 Racta days
5210636 Earth days
7828066 Shalim days
6849558 Earth days
day:15 hrs20 hrs15 hrs15 hrs21 hrs
axial tilt:18°
temperature:1860 K
1587 C
1373 K
1100 C
1716 K
1443 C
1106 K
833 C
1121 K
848 C
atmosphere:78% H2
22% He
0% other
91% H2
9% He
0% other
96% H2
4% He
0% other
81% H2
19% He
0% other
100% other
moons:6016817710339
rings:812000

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