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MJJ502: red dwarf star with 4 planets

  MJJ502.1   MJJ502.2  
MJJ502.3
 
MJJ502.4
 

Solar system 'MJJ502' comprises the star 'MJJ502' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 313 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'MJJ502', a red dwarf class star that contains about 99.83% of the system's known mass and dominates it gravitationally. MJJ502 is located more than 2611 lightyears from the center of the galaxy.

This solar system comprises 4 planets

MJJ502.1 is a large terrestrial planet (8909 km radius) which orbits its star in 155 Earth days, one day on MJJ502.1 lasts 7 Earth hours. Its average temperature is 715 K (442 C), its atmosphere mainly consists of nitrogen, oxygen and it has 14 moons.
MJJ502.2 is a medium terrestrial planet (6128 km radius) which orbits its star in 286 Earth days, one day on MJJ502.2 lasts 10 Earth hours. Its average temperature is 635 K (362 C), its atmosphere mainly consists of nitrogen, oxygen and it has 2 moons.
MJJ502.3 is a large gas giant (56472 km radius) which orbits its star in 21689 Earth days, one day on MJJ502.3 lasts 4 Earth hours. Its average temperature is 1269 K (996 C), its atmosphere mainly consists of hydrogen, helium and it has 170 moons.
MJJ502.4 is a medium gas giant (31345 km radius) which orbits its star in 80043 Earth days, one day on MJJ502.4 lasts 4 Earth hours. Its average temperature is 1398 K (1125 C), its atmosphere mainly consists of hydrogen and it has 127 moons.
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Planetary Orbits

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Planetary Statistics

planet:MJJ502.1MJJ502.2MJJ502.3MJJ502.4
distance from star:39*106 km59*106 km1056*106 km2524*106 km
radius:8909 km6128 km56472 km31345 km
mass:5656*1021 kg1840*1021 kg1440752*1021 kg246373*1021 kg
surface gravity: 4.75 m/s2
0.48 Earths
3.27 m/s2
0.33 Earths
30.1 m/s2
3.07 Earths
16.7 m/s2
1.70 Earths
escape velocity:9.205 km/s6.330 km/s58.35 km/s32.39 km/s
year: 531 MJJ502.1 days
155 Earth days
686 MJJ502.2 days
286 Earth days
130134 MJJ502.3 days
21689 Earth days
480258 MJJ502.4 days
80043 Earth days
day:7 hrs10 hrs4 hrs4 hrs
axial tilt:27°
temperature:715 K
442 C
635 K
362 C
1269 K
996 C
1398 K
1125 C
atmosphere:59% N2
40% O2
1% CO2
0% other
80% N2
16% O2
4% CO2
0% other
78% H2
22% He
0% other
98% H2
2% He
0% other
moons:142170127
rings:0023

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