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LHG728: red dwarf star with 8 planets

  LHG728.1   LHG728.2   LHG728.3  
LHG728.4
  LHG728.5   LHG728.6  
LHG728.7
 
LHG728.8
 

Solar system 'LHG728' comprises the star 'LHG728' and the retinue of celestial objects gravitationally bound to it: 8 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 'LHG728', a red dwarf class star that contains about 99.99% of the system's known mass and dominates it gravitationally. LHG728 is located more than 2031 lightyears from the center of the galaxy.

This solar system comprises 8 planets

LHG728.1 is a medium terrestrial planet (5245 km radius) which orbits its star in 71 Earth days, one day on LHG728.1 lasts 17 Earth hours. Its average temperature is 947 K (674 C), its atmosphere mainly consists of nitrogen and it has 0 moons.
LHG728.2 is a very large terrestrial planet (9465 km radius) which orbits its star in 135 Earth days, one day on LHG728.2 lasts 10 Earth hours. Its average temperature is 805 K (532 C), its atmosphere mainly consists of nitrogen, oxygen and it has 20 moons.
LHG728.3 is a large terrestrial planet (8167 km radius) which orbits its star in 646 Earth days, one day on LHG728.3 lasts 11 Earth hours. Its average temperature is 149 K (-124 C), its atmosphere mainly consists of nitrogen, carbon dioxide and it has 30 moons.
LHG728.4 is a large terrestrial planet (8452 km radius) which orbits its star in 1188 Earth days, one day on LHG728.4 lasts 11 Earth hours. Its average temperature is 88 K (-185 C), its atmosphere mainly consists of nitrogen, oxygen and it has 14 moons.
LHG728.5 is a small terrestrial planet (4586 km radius) which orbits its star in 2183 Earth days, one day on LHG728.5 lasts 19 Earth hours. Its average temperature is 49 K (-224 C), its atmosphere mainly consists of nitrogen, oxygen and it has 12 moons.
LHG728.6 is a small terrestrial planet (3840 km radius) which orbits its star in 4010 Earth days, one day on LHG728.6 lasts 24 Earth hours. Its average temperature is 26 K (-247 C), its atmosphere mainly consists of nitrogen and it has 2 moons.
LHG728.7 is a very large terrestrial planet (10422 km radius) which orbits its star in 7367 Earth days, one day on LHG728.7 lasts 10 Earth hours. Its average temperature is 13 K (-260 C), its atmosphere mainly consists of nitrogen, oxygen and it has 23 moons.
LHG728.8 is a small terrestrial planet (3725 km radius) which orbits its star in 13535 Earth days, one day on LHG728.8 lasts 26 Earth hours. Its average temperature is 6 K (-267 C), its atmosphere mainly consists of nitrogen, oxygen and it has 13 moons.
More planetary details...

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Planetary Orbits

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Planetary Statistics

planet:LHG728.1LHG728.2LHG728.3LHG728.4LHG728.5
distance from star:23*106 km35*106 km101*106 km152*106 km228*106 km
radius:5245 km9465 km8167 km8452 km4586 km
mass:1154*1021 kg6783*1021 kg4357*1021 kg4830*1021 kg771*1021 kg
surface gravity: 2.79 m/s2
0.28 Earths
5.05 m/s2
0.51 Earths
4.35 m/s2
0.44 Earths
4.51 m/s2
0.46 Earths
2.44 m/s2
0.24 Earths
escape velocity:5.419 km/s9.780 km/s8.438 km/s8.733 km/s4.737 km/s
year: 100 LHG728.1 days
71 Earth days
324 LHG728.2 days
135 Earth days
1409 LHG728.3 days
646 Earth days
2592 LHG728.4 days
1188 Earth days
2757 LHG728.5 days
2183 Earth days
day:17 hrs10 hrs11 hrs11 hrs19 hrs
axial tilt:275°310°233°
temperature:947 K
674 C
805 K
532 C
149 K
-124 C
88 K
-185 C
49 K
-224 C
atmosphere:86% N2
8% O2
6% CO2
0% other
5% H2
1% He
62% N2
32% O2
0% other
28% N2
72% CO2
0% other
78% N2
19% O2
3% CO2
0% other
1% He
81% N2
15% O2
3% CO2
0% other
moons:020301412
rings:00030

planet:LHG728.6LHG728.7LHG728.8
distance from star:343*106 km514*106 km771*106 km
radius:3840 km10422 km3725 km
mass:452*1021 kg9056*1021 kg413*1021 kg
surface gravity: 2.04 m/s2
0.20 Earths
5.56 m/s2
0.56 Earths
1.98 m/s2
0.20 Earths
escape velocity:3.963 km/s10.76 km/s3.847 km/s
year: 4010 LHG728.6 days
4010 Earth days
17680 LHG728.7 days
7367 Earth days
12493 LHG728.8 days
13535 Earth days
day:24 hrs10 hrs26 hrs
axial tilt:13°23°
temperature:26 K
-247 C
13 K
-260 C
6 K
-267 C
atmosphere:84% N2
8% O2
8% CO2
0% other
4% H2
1% He
71% N2
23% O2
1% CO2
0% other
52% N2
48% O2
0% other
moons:22313
rings:023

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