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MBK861: red giant star with 4 planets

  MBK861.1   MBK861.2  
MBK861.3
 
MBK861.4
 

Solar system 'MBK861' comprises the star 'MBK861' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 299 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'MBK861', a red giant class star that contains about 99.91% of the system's known mass and dominates it gravitationally. MBK861 is located more than 4640 lightyears from the center of the galaxy.

This solar system comprises 4 planets

MBK861.1 is a small terrestrial planet (4199 km radius) which orbits its star in 147 Earth days, one day on MBK861.1 lasts 18 Earth hours. Its average temperature is 1122 K (849 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
MBK861.2 is a medium terrestrial planet (6493 km radius) which orbits its star in 434 Earth days, one day on MBK861.2 lasts 9 Earth hours. Its average temperature is 530 K (257 C), its atmosphere mainly consists of nitrogen, oxygen and it has 10 moons.
MBK861.3 is a medium gas giant (34409 km radius) which orbits its star in 12913 Earth days, one day on MBK861.3 lasts 4 Earth hours. Its average temperature is 1591 K (1318 C), its atmosphere mainly consists of hydrogen, helium and it has 175 moons.
MBK861.4 is a large gas giant (50024 km radius) which orbits its star in 74338 Earth days, one day on MBK861.4 lasts 4 Earth hours. Its average temperature is 1707 K (1434 C), its atmosphere mainly consists of hydrogen, helium and it has 114 moons.
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Planetary Orbits

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Planetary Statistics

planet:MBK861.1MBK861.2MBK861.3MBK861.4
distance from star:37*106 km77*106 km748*106 km2402*106 km
radius:4199 km6493 km34409 km50024 km
mass:592*1021 kg2189*1021 kg325916*1021 kg1001440*1021 kg
surface gravity: 2.24 m/s2
0.22 Earths
3.46 m/s2
0.35 Earths
18.3 m/s2
1.87 Earths
26.7 m/s2
2.73 Earths
escape velocity:4.338 km/s6.708 km/s35.55 km/s51.69 km/s
year: 196 MBK861.1 days
147 Earth days
1157 MBK861.2 days
434 Earth days
77478 MBK861.3 days
12913 Earth days
446028 MBK861.4 days
74338 Earth days
day:18 hrs9 hrs4 hrs4 hrs
axial tilt:23°64°
temperature:1122 K
849 C
530 K
257 C
1591 K
1318 C
1707 K
1434 C
atmosphere:85% N2
14% O2
1% CO2
0% other
72% N2
25% O2
3% CO2
0% other
84% H2
16% He
0% other
76% H2
24% He
0% other
moons:010175114
rings:001818

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