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LCK421: yellow dwarf star with 13 planets

  LCK421.1   LCK421.2   LCK421.3  
LCK421.4
  LCK421.5   LCK421.6   LCK421.7  
LCK421.8
  LCK421.9   LCK421.10  
LCK421.11
 
LCK421.12
  LCK421.13  

Solar system 'LCK421' comprises the star 'LCK421' and the retinue of celestial objects gravitationally bound to it: 13 planets and their 678 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'LCK421', a yellow dwarf class star that contains about 99.74% of the system's known mass and dominates it gravitationally. LCK421 is located more than 4818 lightyears from the center of the galaxy.

This solar system comprises 13 planets

LCK421.1 is a very large terrestrial planet (10689 km radius) which orbits its star in 88 Earth days, one day on LCK421.1 lasts 15 Earth hours. Its average temperature is 1961 K (1688 C), its atmosphere mainly consists of nitrogen, oxygen and it has 16 moons.
LCK421.2 is a large terrestrial planet (7665 km radius) which orbits its star in 296 Earth days, one day on LCK421.2 lasts 17 Earth hours. Its average temperature is 784 K (511 C), its atmosphere mainly consists of nitrogen, oxygen and it has 20 moons.
LCK421.3 is a large terrestrial planet (7690 km radius) which orbits its star in 971 Earth days, one day on LCK421.3 lasts 17 Earth hours. Its average temperature is 241 K (-32 C), its atmosphere mainly consists of nitrogen, oxygen and it has 11 moons.
LCK421.4 is a small terrestrial planet (4162 km radius) which orbits its star in 1785 Earth days, one day on LCK421.4 lasts 27 Earth hours. Its average temperature is 142 K (-131 C), its atmosphere mainly consists of nitrogen, oxygen and it has 11 moons.
LCK421.5 is a small terrestrial planet (3434 km radius) which orbits its star in 3279 Earth days, one day on LCK421.5 lasts 34 Earth hours. Its average temperature is 79 K (-194 C), its atmosphere mainly consists of nitrogen, carbon dioxide and it has 8 moons.
LCK421.6 is a large terrestrial planet (8580 km radius) which orbits its star in 6025 Earth days, one day on LCK421.6 lasts 16 Earth hours. Its average temperature is 42 K (-231 C), its atmosphere mainly consists of hydrogen, nitrogen, oxygen and it has 19 moons.
LCK421.7 is a medium terrestrial planet (5180 km radius) which orbits its star in 11068 Earth days, one day on LCK421.7 lasts 22 Earth hours. Its average temperature is 21 K (-252 C), its atmosphere mainly consists of nitrogen, oxygen and it has 13 moons.
LCK421.8 is a large gas giant (60560 km radius) which orbits its star in 54926 Earth days, one day on LCK421.8 lasts 13 Earth hours. Its average temperature is 1121 K (848 C), its atmosphere mainly consists of hydrogen, helium and it has 110 moons.
LCK421.9 is a large gas giant (56941 km radius) which orbits its star in 100906 Earth days, one day on LCK421.9 lasts 13 Earth hours. Its average temperature is 1000 K (727 C), its atmosphere mainly consists of hydrogen, helium and it has 126 moons.
LCK421.10 is a very large terrestrial planet (11701 km radius) which orbits its star in 185377 Earth days, one day on LCK421.10 lasts 14 Earth hours. Its average temperature is 1128 K (855 C), its atmosphere mainly consists of hydrogen and it has 108 moons.
LCK421.11 is a medium terrestrial planet (5808 km radius) which orbits its star in 340560 Earth days, one day on LCK421.11 lasts 20 Earth hours. Its average temperature is 1325 K (1052 C), its atmosphere mainly consists of hydrogen, helium and it has 162 moons.
LCK421.12 is a massive terrestrial planet (17265 km radius) which orbits its star in 625649 Earth days, one day on LCK421.12 lasts 13 Earth hours. Its average temperature is 1065 K (792 C), its atmosphere mainly consists of hydrogen, helium and it has 43 moons.
LCK421.13 is a small terrestrial planetoid (1526 km radius) which orbits its star in 822438 Earth days, one day on LCK421.13 lasts 122 Earth hours. Its average temperature is 1190 K (917 C), its atmosphere mainly consists of and it has 31 moons.
More planetary details...

Location

Planetary Orbits

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Planetary Statistics

planet:LCK421.1LCK421.2LCK421.3LCK421.4LCK421.5
distance from star:26*106 km60*106 km133*106 km199*106 km299*106 km
radius:10689 km7665 km7690 km4162 km3434 km
mass:9770*1021 kg3602*1021 kg3638*1021 kg576*1021 kg323*1021 kg
surface gravity: 5.70 m/s2
0.58 Earths
4.09 m/s2
0.41 Earths
4.10 m/s2
0.41 Earths
2.21 m/s2
0.22 Earths
1.82 m/s2
0.18 Earths
escape velocity:11.04 km/s7.920 km/s7.946 km/s4.298 km/s3.543 km/s
year: 140 LCK421.1 days
88 Earth days
417 LCK421.2 days
296 Earth days
1370 LCK421.3 days
971 Earth days
1586 LCK421.4 days
1785 Earth days
2314 LCK421.5 days
3279 Earth days
day:15 hrs17 hrs17 hrs27 hrs34 hrs
axial tilt:34°28°33°259°
temperature:1961 K
1688 C
784 K
511 C
241 K
-32 C
142 K
-131 C
79 K
-194 C
atmosphere:2% H2
1% He
80% N2
17% O2
0% other
77% N2
21% O2
2% CO2
0% other
75% N2
22% O2
3% CO2
0% other
80% N2
19% O2
1% CO2
0% other
45% N2
55% CO2
0% other
moons:162011118
rings:00040

planet:LCK421.6LCK421.7LCK421.8LCK421.9LCK421.10
distance from star:449*106 km674*106 km1963*106 km2945*106 km4418*106 km
radius:8580 km5180 km60560 km56941 km11701 km
mass:5053*1021 kg1111*1021 kg1776836*1021 kg1476948*1021 kg12816*1021 kg
surface gravity: 4.58 m/s2
0.46 Earths
2.76 m/s2
0.28 Earths
32.3 m/s2
3.30 Earths
30.4 m/s2
3.10 Earths
6.24 m/s2
0.63 Earths
escape velocity:8.866 km/s5.350 km/s62.58 km/s58.84 km/s12.09 km/s
year: 9037 LCK421.6 days
6025 Earth days
12074 LCK421.7 days
11068 Earth days
101401 LCK421.8 days
54926 Earth days
186288 LCK421.9 days
100906 Earth days
317789 LCK421.10 days
185377 Earth days
day:16 hrs22 hrs13 hrs13 hrs14 hrs
axial tilt:242°212°62°67°
temperature:42 K
-231 C
21 K
-252 C
1121 K
848 C
1000 K
727 C
1128 K
855 C
atmosphere:11% H2
3% He
41% N2
44% O2
1% CO2
0% other
1% He
60% N2
38% O2
1% CO2
0% other
77% H2
23% He
0% other
84% H2
16% He
0% other
95% H2
5% He
0% other
moons:1913110126108
rings:002200

planet:LCK421.11LCK421.12LCK421.13
distance from star:6627*106 km9941*106 km11929*106 km
radius:5808 km17265 km1526 km
mass:1567*1021 kg41170*1021 kg28*1021 kg
surface gravity: 3.10 m/s2
0.31 Earths
9.21 m/s2
0.94 Earths
0.80 m/s2
0.08 Earths
escape velocity:6.001 km/s17.84 km/s1.565 km/s
year: 408672 LCK421.11 days
340560 Earth days
1155044 LCK421.12 days
625649 Earth days
161791 LCK421.13 days
822438 Earth days
day:20 hrs13 hrs122 hrs
axial tilt:10°
temperature:1325 K
1052 C
1065 K
792 C
1190 K
917 C
atmosphere:77% H2
23% He
0% other
79% H2
21% He
0% other
100% other
moons:1624331
rings:2160

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