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NCG538: red giant star with 4 planets

 
NCG538.1
 
NCG538.2
 
NCG538.3
 
NCG538.4
 

Solar system 'NCG538' is a dual star system that comprises the stars 'NCG538.A' and 'NCG538.B' and the retinue of celestial objects gravitationally bound to them: 4 planets and their 414 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal components of this star system are the stars 'NCG538.A' and 'NCG538.B' that dominate it gravitationally. 'NCG538.A' is a red giant class star that contains about 99% of the system's known mass, 'NCG538.B' is a brown dwarf class star that contains about 0% of the system's known mass.

System 'NCG538' is located more than 3430 lightyears from the center of the galaxy.

This solar system comprises 4 planets

NCG538.1 is a large gas giant (77384 km radius) which orbits its star in 91641 Earth days, one day on NCG538.1 lasts 4 Earth hours. Its average temperature is 1225 K (952 C), its atmosphere mainly consists of hydrogen and it has 119 moons.
NCG538.2 is a medium gas giant (26062 km radius) which orbits its star in 168356 Earth days, one day on NCG538.2 lasts 4 Earth hours. Its average temperature is 1100 K (827 C), its atmosphere mainly consists of hydrogen and it has 92 moons.
NCG538.3 is a massive terrestrial planet (15616 km radius) which orbits its star in 309290 Earth days, one day on NCG538.3 lasts 5 Earth hours. Its average temperature is 1112 K (839 C), its atmosphere mainly consists of hydrogen, helium and it has 114 moons.
NCG538.4 is a large gas giant (59938 km radius) which orbits its star in 568203 Earth days, one day on NCG538.4 lasts 4 Earth hours. Its average temperature is 1125 K (852 C), its atmosphere mainly consists of hydrogen, helium and it has 89 moons.
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Planetary Statistics

planet:NCG538.1NCG538.2NCG538.3NCG538.4
distance from star:2762*106 km4143*106 km6215*106 km9323*106 km
radius:77384 km26062 km15616 km59938 km
mass:3707178*1021 kg141616*1021 kg30464*1021 kg1722648*1021 kg
surface gravity: 41.3 m/s2
4.22 Earths
13.9 m/s2
1.42 Earths
8.33 m/s2
0.85 Earths
32.0 m/s2
3.27 Earths
escape velocity:79.96 km/s26.93 km/s16.13 km/s61.93 km/s
year: 549846 NCG538.1 days
91641 Earth days
1010136 NCG538.2 days
168356 Earth days
1484592 NCG538.3 days
309290 Earth days
3409218 NCG538.4 days
568203 Earth days
day:4 hrs4 hrs5 hrs4 hrs
axial tilt:23°
temperature:1225 K
952 C
1100 K
827 C
1112 K
839 C
1125 K
852 C
atmosphere:97% H2
3% He
0% other
98% H2
2% He
0% other
84% H2
16% He
0% other
85% H2
15% He
0% other
moons:1199211489
rings:1720225

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