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LJF172: red dwarf star with 8 planets

  LJF172.1   LJF172.2   LJF172.3   LJF172.4   LJF172.5   LJF172.6   LJF172.7   LJF172.8  

Solar system 'LJF172' comprises the star 'LJF172' and the retinue of celestial objects gravitationally bound to it: 8 planets and their 317 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'LJF172', a red dwarf class star that contains about 99.91% of the system's known mass and dominates it gravitationally. LJF172 is located more than 2073 lightyears from the center of the galaxy.

LJF172.1, the first planet in this system, may feature life forms. Its average temperature is 292K (19C) and it's atmosphere contains 35% of oxygen. One year on LJF172.1 lasts 108 days, one day lasts 30 hours. It's diameter is 6732 km, 0.5 times the diameter of the Earth.

LJF172.2, the second planet in this system, may feature life forms. Its average temperature is 259K (-14C) and it's atmosphere contains 48% of oxygen. One year on LJF172.2 lasts 199 days, one day lasts 13 hours. It's diameter is 13786 km, 1 times the diameter of the Earth.

This solar system comprises 8 planets

LJF172.1 is a small terrestrial planet (3366 km radius) which orbits its star in 108 Earth days, one day on LJF172.1 lasts 30 Earth hours. Its average temperature is 292 K (19 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
LJF172.2 is a medium terrestrial planet (6893 km radius) which orbits its star in 199 Earth days, one day on LJF172.2 lasts 13 Earth hours. Its average temperature is 259 K (-14 C), its atmosphere mainly consists of nitrogen, oxygen and it has 10 moons.
LJF172.3 is a medium terrestrial planet (6826 km radius) which orbits its star in 366 Earth days, one day on LJF172.3 lasts 13 Earth hours. Its average temperature is 173 K (-100 C), its atmosphere mainly consists of hydrogen, nitrogen, oxygen and it has 7 moons.
LJF172.4 is a medium terrestrial planet (6563 km radius) which orbits its star in 673 Earth days, one day on LJF172.4 lasts 13 Earth hours. Its average temperature is 102 K (-171 C), its atmosphere mainly consists of nitrogen, oxygen and it has 8 moons.
LJF172.5 is a large terrestrial planet (8149 km radius) which orbits its star in 1236 Earth days, one day on LJF172.5 lasts 11 Earth hours. Its average temperature is 56 K (-217 C), its atmosphere mainly consists of nitrogen, oxygen and it has 31 moons.
LJF172.6 is a medium terrestrial planet (6717 km radius) which orbits its star in 2272 Earth days, one day on LJF172.6 lasts 13 Earth hours. Its average temperature is 30 K (-243 C), its atmosphere mainly consists of nitrogen, carbon dioxide and it has 18 moons.
LJF172.7 is a medium gas giant (21744 km radius) which orbits its star in 25516 Earth days, one day on LJF172.7 lasts 8 Earth hours. Its average temperature is 1406 K (1133 C), its atmosphere mainly consists of hydrogen, helium and it has 95 moons.
LJF172.8 is a medium gas giant (25586 km radius) which orbits its star in 46877 Earth days, one day on LJF172.8 lasts 8 Earth hours. Its average temperature is 1647 K (1374 C), its atmosphere mainly consists of hydrogen and it has 148 moons.
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Planetary Orbits

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Planetary Statistics

planet:LJF172.1LJF172.2LJF172.3LJF172.4LJF172.5
distance from star:30*106 km46*106 km69*106 km104*106 km156*106 km
radius:3366 km6893 km6826 km6563 km8149 km
mass:305*1021 kg2620*1021 kg2544*1021 kg2261*1021 kg4329*1021 kg
surface gravity: 1.79 m/s2
0.18 Earths
3.68 m/s2
0.37 Earths
3.64 m/s2
0.37 Earths
3.50 m/s2
0.35 Earths
4.35 m/s2
0.44 Earths
escape velocity:3.477 km/s7.123 km/s7.053 km/s6.781 km/s8.420 km/s
year: 86 LJF172.1 days
108 Earth days
367 LJF172.2 days
199 Earth days
675 LJF172.3 days
366 Earth days
1242 LJF172.4 days
673 Earth days
2696 LJF172.5 days
1236 Earth days
day:30 hrs13 hrs13 hrs13 hrs11 hrs
axial tilt:22°16°108°29°
temperature:292 K
19 C
259 K
-14 C
173 K
-100 C
102 K
-171 C
56 K
-217 C
atmosphere:64% N2
35% O2
1% CO2
0% other
5% H2
1% He
46% N2
48% O2
0% other
15% H2
2% He
41% N2
41% O2
1% CO2
0% other
5% H2
2% He
63% N2
28% O2
2% CO2
0% other
82% N2
16% O2
2% CO2
0% other
moons:0107831
rings:00000

planet:LJF172.6LJF172.7LJF172.8
distance from star:234*106 km1177*106 km1766*106 km
radius:6717 km21744 km25586 km
mass:2424*1021 kg82244*1021 kg133997*1021 kg
surface gravity: 3.58 m/s2
0.36 Earths
11.6 m/s2
1.18 Earths
13.6 m/s2
1.39 Earths
escape velocity:6.940 km/s22.46 km/s26.44 km/s
year: 4194 LJF172.6 days
2272 Earth days
76548 LJF172.7 days
25516 Earth days
140631 LJF172.8 days
46877 Earth days
day:13 hrs8 hrs8 hrs
axial tilt:27°
temperature:30 K
-243 C
1406 K
1133 C
1647 K
1374 C
atmosphere:86% N2
3% O2
11% CO2
0% other
87% H2
13% He
0% other
90% H2
10% He
0% other
moons:1895148
rings:000

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