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MCA678: red dwarf star with 5 planets

  MCA678.1   MCA678.2   MCA678.3  
MCA678.4
 
MCA678.5
 

Solar system 'MCA678' comprises the star 'MCA678' and the retinue of celestial objects gravitationally bound to it: 5 planets and their 285 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'MCA678', a red dwarf class star that contains about 99.81% of the system's known mass and dominates it gravitationally. MCA678 is located more than 2819 lightyears from the center of the galaxy.

MCA678.3, the third planet in this system, may feature life forms. Its average temperature is 286K (13C) and it's atmosphere contains 19% of oxygen. One year on MCA678.3 lasts 561 days, one day lasts 65 hours. It's diameter is 4098 km, 0.3 times the diameter of the Earth.

This solar system comprises 5 planets

MCA678.1 is a very large terrestrial planet (9203 km radius) which orbits its star in 123 Earth days, one day on MCA678.1 lasts 7 Earth hours. Its average temperature is 718 K (445 C), its atmosphere mainly consists of nitrogen, oxygen and it has 20 moons.
MCA678.2 is a large terrestrial planet (7113 km radius) which orbits its star in 305 Earth days, one day on MCA678.2 lasts 9 Earth hours. Its average temperature is 429 K (156 C), its atmosphere mainly consists of nitrogen, oxygen and it has 3 moons.
MCA678.3 is a very small terrestrial planet (2049 km radius) which orbits its star in 561 Earth days, one day on MCA678.3 lasts 65 Earth hours. Its average temperature is 286 K (13 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
MCA678.4 is a large gas giant (53666 km radius) which orbits its star in 35975 Earth days, one day on MCA678.4 lasts 5 Earth hours. Its average temperature is 1506 K (1233 C), its atmosphere mainly consists of hydrogen and it has 96 moons.
MCA678.5 is a medium gas giant (25078 km radius) which orbits its star in 66091 Earth days, one day on MCA678.5 lasts 5 Earth hours. Its average temperature is 1832 K (1559 C), its atmosphere mainly consists of hydrogen and it has 166 moons.
More planetary details...

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Planetary Orbits

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Planetary Statistics

planet:MCA678.1MCA678.2MCA678.3MCA678.4MCA678.5
distance from star:33*106 km61*106 km92*106 km1481*106 km2221*106 km
radius:9203 km7113 km2049 km53666 km25078 km
mass:6235*1021 kg2879*1021 kg68*1021 kg1236481*1021 kg126173*1021 kg
surface gravity: 4.91 m/s2
0.50 Earths
3.79 m/s2
0.38 Earths
1.08 m/s2
0.11 Earths
28.6 m/s2
2.92 Earths
13.3 m/s2
1.35 Earths
escape velocity:9.509 km/s7.350 km/s2.104 km/s55.45 km/s25.91 km/s
year: 421 MCA678.1 days
123 Earth days
813 MCA678.2 days
305 Earth days
207 MCA678.3 days
561 Earth days
172680 MCA678.4 days
35975 Earth days
317236 MCA678.5 days
66091 Earth days
day:7 hrs9 hrs65 hrs5 hrs5 hrs
axial tilt:23°10°22°17°
temperature:718 K
445 C
429 K
156 C
286 K
13 C
1506 K
1233 C
1832 K
1559 C
atmosphere:3% H2
1% He
65% N2
31% O2
0% other
60% N2
38% O2
2% CO2
0% other
80% N2
19% O2
1% CO2
0% other
97% H2
3% He
0% other
98% H2
2% He
0% other
moons:203096166
rings:00074

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