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LJC440: red dwarf star with 4 planets

  LJC440.1   LJC440.2  
LJC440.3
 
LJC440.4
 

Solar system 'LJC440' comprises the star 'LJC440' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 322 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'LJC440', a red dwarf class star that contains about 99.78% of the system's known mass and dominates it gravitationally. LJC440 is located more than 2073 lightyears from the center of the galaxy.

This solar system comprises 4 planets

LJC440.1 is a very large terrestrial planet (11293 km radius) which orbits its star in 132 Earth days, one day on LJC440.1 lasts 5 Earth hours. Its average temperature is 189 K (-84 C), its atmosphere mainly consists of nitrogen and it has 31 moons.
LJC440.2 is a medium terrestrial planet (6435 km radius) which orbits its star in 243 Earth days, one day on LJC440.2 lasts 10 Earth hours. Its average temperature is 168 K (-105 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
LJC440.3 is a huge terrestrial planet (14445 km radius) which orbits its star in 1379 Earth days, one day on LJC440.3 lasts 5 Earth hours. Its average temperature is 1741 K (1468 C), its atmosphere mainly consists of hydrogen, helium and it has 144 moons.
LJC440.4 is a medium gas giant (37787 km radius) which orbits its star in 4200 Earth days, one day on LJC440.4 lasts 4 Earth hours. Its average temperature is 1284 K (1011 C), its atmosphere mainly consists of hydrogen and it has 147 moons.
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Planetary Orbits

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Planetary Statistics

planet:LJC440.1LJC440.2LJC440.3LJC440.4
distance from star:35*106 km52*106 km168*106 km353*106 km
radius:11293 km6435 km14445 km37787 km
mass:11521*1021 kg2131*1021 kg24112*1021 kg431635*1021 kg
surface gravity: 6.02 m/s2
0.61 Earths
3.43 m/s2
0.35 Earths
7.71 m/s2
0.78 Earths
20.1 m/s2
2.05 Earths
escape velocity:11.66 km/s6.648 km/s14.92 km/s39.04 km/s
year: 633 LJC440.1 days
132 Earth days
583 LJC440.2 days
243 Earth days
6619 LJC440.3 days
1379 Earth days
25200 LJC440.4 days
4200 Earth days
day:5 hrs10 hrs5 hrs4 hrs
axial tilt:12°24°
temperature:189 K
-84 C
168 K
-105 C
1741 K
1468 C
1284 K
1011 C
atmosphere:90% N2
3% O2
7% CO2
0% other
10% H2
2% He
43% N2
44% O2
1% CO2
0% other
86% H2
14% He
0% other
97% H2
3% He
0% other
moons:310144147
rings:00310

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