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MBH728: yellow dwarf star with 5 planets

  MBH728.1   MBH728.2   MBH728.3   MBH728.4  
MBH728.5
 

Solar system 'MBH728' comprises the star 'MBH728' and the retinue of celestial objects gravitationally bound to it: 5 planets and their 149 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'MBH728', a yellow dwarf class star that contains about 99.99% of the system's known mass and dominates it gravitationally. MBH728 is located more than 2819 lightyears from the center of the galaxy.

MBH728.3, the third planet in this system, may feature life forms. Its average temperature is 346K (73C) and it's atmosphere contains 18% of oxygen. One year on MBH728.3 lasts 765 days, one day lasts 7 hours. It's diameter is 18660 km, 1.4 times the diameter of the Earth.

This solar system comprises 5 planets

MBH728.1 is a very small terrestrial planet (2697 km radius) which orbits its star in 72 Earth days, one day on MBH728.1 lasts 39 Earth hours. Its average temperature is 1326 K (1053 C), its atmosphere mainly consists of nitrogen and it has 0 moons.
MBH728.2 is a small terrestrial planet (4523 km radius) which orbits its star in 134 Earth days, one day on MBH728.2 lasts 17 Earth hours. Its average temperature is 1179 K (906 C), its atmosphere mainly consists of hydrogen, nitrogen, oxygen and it has 2 moons.
MBH728.3 is a very large terrestrial planet (9330 km radius) which orbits its star in 765 Earth days, one day on MBH728.3 lasts 7 Earth hours. Its average temperature is 346 K (73 C), its atmosphere mainly consists of nitrogen, oxygen and it has 42 moons.
MBH728.4 is a very large terrestrial planet (9543 km radius) which orbits its star in 1406 Earth days, one day on MBH728.4 lasts 7 Earth hours. Its average temperature is 205 K (-68 C), its atmosphere mainly consists of nitrogen, oxygen and it has 17 moons.
MBH728.5 is a medium gas giant (22955 km radius) which orbits its star in 20451 Earth days, one day on MBH728.5 lasts 5 Earth hours. Its average temperature is 1676 K (1403 C), its atmosphere mainly consists of hydrogen, helium and it has 88 moons.
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Planetary Statistics

planet:MBH728.1MBH728.2MBH728.3MBH728.4MBH728.5
distance from star:23*106 km35*106 km113*106 km170*106 km1016*106 km
radius:2697 km4523 km9330 km9543 km22955 km
mass:156*1021 kg740*1021 kg6497*1021 kg6952*1021 kg96765*1021 kg
surface gravity: 1.43 m/s2
0.14 Earths
2.41 m/s2
0.24 Earths
4.98 m/s2
0.50 Earths
5.09 m/s2
0.52 Earths
12.2 m/s2
1.24 Earths
escape velocity:2.778 km/s4.673 km/s9.641 km/s9.861 km/s23.72 km/s
year: 44 MBH728.1 days
72 Earth days
189 MBH728.2 days
134 Earth days
2622 MBH728.3 days
765 Earth days
4820 MBH728.4 days
1406 Earth days
98164 MBH728.5 days
20451 Earth days
day:39 hrs17 hrs7 hrs7 hrs5 hrs
axial tilt:29°20°10°21°85°
temperature:1326 K
1053 C
1179 K
906 C
346 K
73 C
205 K
-68 C
1676 K
1403 C
atmosphere:88% N2
6% O2
6% CO2
0% other
20% H2
4% He
31% N2
45% O2
0% other
82% N2
18% O2
0% other
5% H2
1% He
58% N2
35% O2
1% CO2
0% other
82% H2
18% He
0% other
moons:02421788
rings:00003

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