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WHE220 (WHE220): yellow dwarf star with 8 planets

  WHE220.1   WHE220.2   WHE220.3   WHE220.4  
WHE220.5
  WHE220.6  
WHE220.7
 
WHE220.8
 

Solar system 'WHE220 (WHE220)' is a dual star system that comprises the stars 'WHE220.A' and 'WHE220.B' and the retinue of celestial objects gravitationally bound to them: 8 planets and their 434 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal components of this star system are the stars 'WHE220.A' and 'WHE220.B' that dominate it gravitationally. 'WHE220.A' is a yellow dwarf class star that contains about 73% of the system's known mass, 'WHE220.B' is a yellow dwarf class star that contains about 26% of the system's known mass.

System 'WHE220' is located more than 2252 lightyears from the center of the galaxy.

WHE220.4, the fourth planet in this system, may feature life forms. Its average temperature is 290K (17C) and it's atmosphere contains 31% of oxygen. One year on WHE220.4 lasts 1803 days, one day lasts 11 hours. It's diameter is 16886 km, 1.3 times the diameter of the Earth.

The chaotic, shifting orbits of this system's planets, due to the close orbits of the twin primaries, have limited its usefulness as a K'Asth colony. Numerous scientific and military stations are located here staffed by 1 million Kseth, while a further 10 million live on the moons of the 6th planet.

This solar system comprises 8 planets

WHE220.1 is a large terrestrial planet (7049 km radius) which orbits its star in 241 Earth days, one day on WHE220.1 lasts 13 Earth hours. Its average temperature is 1058 K (785 C), its atmosphere mainly consists of nitrogen, oxygen and it has 11 moons.
WHE220.2 is a medium terrestrial planet (6658 km radius) which orbits its star in 534 Earth days, one day on WHE220.2 lasts 13 Earth hours. Its average temperature is 735 K (462 C), its atmosphere mainly consists of nitrogen, oxygen and it has 15 moons.
WHE220.3 is a large terrestrial planet (8872 km radius) which orbits its star in 981 Earth days, one day on WHE220.3 lasts 11 Earth hours. Its average temperature is 490 K (217 C), its atmosphere mainly consists of nitrogen, oxygen and it has 16 moons.
WHE220.4 is a large terrestrial planet (8443 km radius) which orbits its star in 1803 Earth days, one day on WHE220.4 lasts 11 Earth hours. Its average temperature is 290 K (17 C), its atmosphere mainly consists of nitrogen, oxygen and it has 47 moons.
WHE220.5 is a very large terrestrial planet (10522 km radius) which orbits its star in 6499 Earth days, one day on WHE220.5 lasts 10 Earth hours. Its average temperature is 1626 K (1353 C), its atmosphere mainly consists of hydrogen, helium and it has 13 moons.
WHE220.6 is a large gas giant (49689 km radius) which orbits its star in 11940 Earth days, one day on WHE220.6 lasts 8 Earth hours. Its average temperature is 1106 K (833 C), its atmosphere mainly consists of hydrogen, helium and it has 86 moons.
WHE220.7 is a small gas giant (18886 km radius) which orbits its star in 24921 Earth days, one day on WHE220.7 lasts 8 Earth hours. Its average temperature is 1226 K (953 C), its atmosphere mainly consists of hydrogen and it has 150 moons.
WHE220.8 is a medium gas giant (35594 km radius) which orbits its star in 59603 Earth days, one day on WHE220.8 lasts 8 Earth hours. Its average temperature is 1286 K (1013 C), its atmosphere mainly consists of hydrogen, helium and it has 96 moons.
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This solar system belongs to user 'physicsguy'.

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Planetary Statistics

planet:WHE220.1WHE220.2WHE220.3WHE220.4WHE220.5
distance from star:52*106 km89*106 km134*106 km201*106 km473*106 km
radius:7049 km6658 km8872 km8443 km10522 km
mass:2802*1021 kg2361*1021 kg5586*1021 kg4814*1021 kg9319*1021 kg
surface gravity: 3.76 m/s2
0.38 Earths
3.55 m/s2
0.36 Earths
4.73 m/s2
0.48 Earths
4.50 m/s2
0.46 Earths
5.61 m/s2
0.57 Earths
escape velocity:7.284 km/s6.880 km/s9.167 km/s8.724 km/s10.87 km/s
year: 444 WHE220.1 days
241 Earth days
985 WHE220.2 days
534 Earth days
2140 WHE220.3 days
981 Earth days
3933 WHE220.4 days
1803 Earth days
15597 WHE220.5 days
6499 Earth days
day:13 hrs13 hrs11 hrs11 hrs10 hrs
axial tilt:22°15°205°
temperature:1058 K
785 C
735 K
462 C
490 K
217 C
290 K
17 C
1626 K
1353 C
atmosphere:1% He
67% N2
31% O2
1% CO2
0% other
5% H2
3% He
55% N2
37% O2
0% other
2% H2
1% He
74% N2
20% O2
3% CO2
0% other
69% N2
31% O2
0% other
85% H2
15% He
0% other
moons:1115164713
rings:00001

planet:WHE220.6WHE220.7WHE220.8
distance from star:709*106 km1159*106 km2073*106 km
radius:49689 km18886 km35594 km
mass:981455*1021 kg53890*1021 kg360761*1021 kg
surface gravity: 26.5 m/s2
2.70 Earths
10.0 m/s2
1.02 Earths
19.0 m/s2
1.94 Earths
escape velocity:51.34 km/s19.51 km/s36.78 km/s
year: 35820 WHE220.6 days
11940 Earth days
74763 WHE220.7 days
24921 Earth days
178809 WHE220.8 days
59603 Earth days
day:8 hrs8 hrs8 hrs
axial tilt:
temperature:1106 K
833 C
1226 K
953 C
1286 K
1013 C
atmosphere:77% H2
23% He
0% other
95% H2
5% He
0% other
84% H2
16% He
0% other
moons:8615096
rings:0520

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