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LKD228: red dwarf star with 4 planets

  LKD228.1   LKD228.2   LKD228.3  
LKD228.4
 

Solar system 'LKD228' comprises the star 'LKD228' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 114 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'LKD228', a red dwarf class star that contains about 99.99% of the system's known mass and dominates it gravitationally. LKD228 is located more than 2073 lightyears from the center of the galaxy.

This solar system comprises 4 planets

LKD228.1 is a very small terrestrial planet (2189 km radius) which orbits its star in 60 Earth days, one day on LKD228.1 lasts 56 Earth hours. Its average temperature is 1845 K (1572 C), its atmosphere mainly consists of nitrogen and it has 0 moons.
LKD228.2 is a very large terrestrial planet (10077 km radius) which orbits its star in 781 Earth days, one day on LKD228.2 lasts 6 Earth hours. Its average temperature is 122 K (-151 C), its atmosphere mainly consists of nitrogen, oxygen and it has 17 moons.
LKD228.3 is a very large terrestrial planet (9997 km radius) which orbits its star in 1436 Earth days, one day on LKD228.3 lasts 6 Earth hours. Its average temperature is 81 K (-192 C), its atmosphere mainly consists of nitrogen, oxygen and it has 4 moons.
LKD228.4 is a small gas giant (19258 km radius) which orbits its star in 6634 Earth days, one day on LKD228.4 lasts 4 Earth hours. Its average temperature is 1668 K (1395 C), its atmosphere mainly consists of hydrogen, helium and it has 93 moons.
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Planetary Orbits

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Planetary Statistics

planet:LKD228.1LKD228.2LKD228.3LKD228.4
distance from star:21*106 km115*106 km173*106 km479*106 km
radius:2189 km10077 km9997 km19258 km
mass:83*1021 kg8186*1021 kg7992*1021 kg57137*1021 kg
surface gravity: 1.15 m/s2
0.11 Earths
5.38 m/s2
0.55 Earths
5.33 m/s2
0.54 Earths
10.2 m/s2
1.04 Earths
escape velocity:2.249 km/s10.41 km/s10.33 km/s19.90 km/s
year: 25 LKD228.1 days
60 Earth days
3124 LKD228.2 days
781 Earth days
5744 LKD228.3 days
1436 Earth days
39804 LKD228.4 days
6634 Earth days
day:56 hrs6 hrs6 hrs4 hrs
axial tilt:15°29°23°
temperature:1845 K
1572 C
122 K
-151 C
81 K
-192 C
1668 K
1395 C
atmosphere:87% N2
8% O2
5% CO2
0% other
84% N2
15% O2
1% CO2
0% other
74% N2
25% O2
1% CO2
0% other
88% H2
12% He
0% other
moons:017493
rings:00017

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