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MGJ128: red dwarf star with 4 planets

 
MGJ128.1
 
MGJ128.2
  MGJ128.3  
MGJ128.4
 

Solar system 'MGJ128' comprises the star 'MGJ128' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 63 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'MGJ128', a red dwarf class star that contains about 99.78% of the system's known mass and dominates it gravitationally. MGJ128 is located more than 2065 lightyears from the center of the galaxy.

This solar system comprises 4 planets

MGJ128.1 is a medium terrestrial planet (6868 km radius) which orbits its star in 336 Earth days, one day on MGJ128.1 lasts 9 Earth hours. Its average temperature is 74 K (-199 C), its atmosphere mainly consists of nitrogen, oxygen and it has 14 moons.
MGJ128.2 is a small terrestrial planet (3552 km radius) which orbits its star in 617 Earth days, one day on MGJ128.2 lasts 23 Earth hours. Its average temperature is 66 K (-207 C), its atmosphere mainly consists of nitrogen, carbon dioxide and it has 3 moons.
MGJ128.3 is a small terrestrial planet (3488 km radius) which orbits its star in 1134 Earth days, one day on MGJ128.3 lasts 24 Earth hours. Its average temperature is 44 K (-229 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
MGJ128.4 is a large gas giant (43014 km radius) which orbits its star in 35136 Earth days, one day on MGJ128.4 lasts 4 Earth hours. Its average temperature is 1936 K (1663 C), its atmosphere mainly consists of hydrogen and it has 46 moons.
More planetary details...

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Planetary Orbits

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Planetary Statistics

planet:MGJ128.1MGJ128.2MGJ128.3MGJ128.4
distance from star:65*106 km98*106 km147*106 km1457*106 km
radius:6868 km3552 km3488 km43014 km
mass:2591*1021 kg358*1021 kg339*1021 kg636677*1021 kg
surface gravity: 3.66 m/s2
0.37 Earths
1.89 m/s2
0.19 Earths
1.85 m/s2
0.18 Earths
22.9 m/s2
2.34 Earths
escape velocity:7.096 km/s3.667 km/s3.601 km/s44.45 km/s
year: 896 MGJ128.1 days
336 Earth days
643 MGJ128.2 days
617 Earth days
1134 MGJ128.3 days
1134 Earth days
210816 MGJ128.4 days
35136 Earth days
day:9 hrs23 hrs24 hrs4 hrs
axial tilt:17°147°
temperature:74 K
-199 C
66 K
-207 C
44 K
-229 C
1936 K
1663 C
atmosphere:1% H2
1% He
75% N2
20% O2
3% CO2
0% other
39% N2
61% CO2
0% other
3% H2
1% He
71% N2
24% O2
1% CO2
0% other
96% H2
4% He
0% other
moons:143046
rings:3505

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