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LBB728: red dwarf star with 8 planets

  LBB728.1   LBB728.2   LBB728.3   LBB728.4   LBB728.5   LBB728.6   LBB728.7  
LBB728.8
 

Solar system 'LBB728' comprises the star 'LBB728' and the retinue of celestial objects gravitationally bound to it: 8 planets and their 154 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'LBB728', a red dwarf class star that contains about 99.83% of the system's known mass and dominates it gravitationally. LBB728 is located more than 4933 lightyears from the center of the galaxy.

This solar system comprises 8 planets

LBB728.1 is a medium terrestrial planet (6250 km radius) which orbits its star in 43 Earth days, one day on LBB728.1 lasts 14 Earth hours. Its average temperature is 1291 K (1018 C), its atmosphere mainly consists of nitrogen, oxygen and it has 2 moons.
LBB728.2 is a very large terrestrial planet (9177 km radius) which orbits its star in 186 Earth days, one day on LBB728.2 lasts 10 Earth hours. Its average temperature is 372 K (99 C), its atmosphere mainly consists of nitrogen, oxygen and it has 23 moons.
LBB728.3 is a very large terrestrial planet (11337 km radius) which orbits its star in 975 Earth days, one day on LBB728.3 lasts 9 Earth hours. Its average temperature is 61 K (-212 C), its atmosphere mainly consists of nitrogen and it has 16 moons.
LBB728.4 is a small terrestrial planet (3779 km radius) which orbits its star in 1792 Earth days, one day on LBB728.4 lasts 25 Earth hours. Its average temperature is 36 K (-237 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
LBB728.5 is a small terrestrial planet (4675 km radius) which orbits its star in 3293 Earth days, one day on LBB728.5 lasts 19 Earth hours. Its average temperature is 20 K (-253 C), its atmosphere mainly consists of nitrogen, oxygen and it has 5 moons.
LBB728.6 is a medium terrestrial planet (5347 km radius) which orbits its star in 6050 Earth days, one day on LBB728.6 lasts 16 Earth hours. Its average temperature is 10 K (-263 C), its atmosphere mainly consists of nitrogen, oxygen and it has 37 moons.
LBB728.7 is a small terrestrial planet (3475 km radius) which orbits its star in 11114 Earth days, one day on LBB728.7 lasts 28 Earth hours. Its average temperature is 5 K (-268 C), its atmosphere mainly consists of nitrogen, carbon dioxide and it has 14 moons.
LBB728.8 is a large gas giant (40924 km radius) which orbits its star in 26683 Earth days, one day on LBB728.8 lasts 8 Earth hours. Its average temperature is 1254 K (981 C), its atmosphere mainly consists of hydrogen, helium and it has 57 moons.
More planetary details...

Location

Planetary Orbits

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Planetary Statistics

planet:LBB728.1LBB728.2LBB728.3LBB728.4LBB728.5
distance from star:16*106 km44*106 km133*106 km200*106 km300*106 km
radius:6250 km9177 km11337 km3779 km4675 km
mass:1953*1021 kg6182*1021 kg11656*1021 kg431*1021 kg817*1021 kg
surface gravity: 3.33 m/s2
0.34 Earths
4.89 m/s2
0.5 Earths
6.05 m/s2
0.61 Earths
2.01 m/s2
0.20 Earths
2.49 m/s2
0.25 Earths
escape velocity:6.458 km/s9.482 km/s11.71 km/s3.901 km/s4.829 km/s
year: 73 LBB728.1 days
43 Earth days
446 LBB728.2 days
186 Earth days
2600 LBB728.3 days
975 Earth days
1720 LBB728.4 days
1792 Earth days
4159 LBB728.5 days
3293 Earth days
day:14 hrs10 hrs9 hrs25 hrs19 hrs
axial tilt:16°223°23°
temperature:1291 K
1018 C
372 K
99 C
61 K
-212 C
36 K
-237 C
20 K
-253 C
atmosphere:77% N2
22% O2
1% CO2
0% other
67% N2
31% O2
2% CO2
0% other
94% N2
6% O2
0% other
4% H2
2% He
61% N2
33% O2
0% other
2% He
72% N2
24% O2
2% CO2
0% other
moons:2231605
rings:00000

planet:LBB728.6LBB728.7LBB728.8
distance from star:451*106 km676*106 km1213*106 km
radius:5347 km3475 km40924 km
mass:1222*1021 kg335*1021 kg548307*1021 kg
surface gravity: 2.85 m/s2
0.29 Earths
1.85 m/s2
0.18 Earths
21.8 m/s2
2.22 Earths
escape velocity:5.523 km/s3.587 km/s42.29 km/s
year: 9075 LBB728.6 days
6050 Earth days
9526 LBB728.7 days
11114 Earth days
80049 LBB728.8 days
26683 Earth days
day:16 hrs28 hrs8 hrs
axial tilt:12°25°
temperature:10 K
-263 C
5 K
-268 C
1254 K
981 C
atmosphere:1% H2
1% He
73% N2
25% O2
0% other
85% N2
4% O2
11% CO2
0% other
80% H2
20% He
0% other
moons:371457
rings:0021

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