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MDH639: yellow giant star with 3 planets

 
MDH639.1
 
MDH639.2
 
MDH639.3
 

Solar system 'MDH639' comprises the star 'MDH639' and the retinue of celestial objects gravitationally bound to it: 3 planets and their 196 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'MDH639', a yellow giant class star that contains about 99.99% of the system's known mass and dominates it gravitationally. MDH639 is located more than 5087 lightyears from the center of the galaxy.

This solar system comprises 3 planets

MDH639.1 is a small terrestrial planet (4480 km radius) which orbits its star in 34 Earth days, one day on MDH639.1 lasts 15 Earth hours. Its average temperature is 1245 K (972 C), its atmosphere mainly consists of hydrogen, nitrogen, oxygen and it has 0 moons.
MDH639.2 is a medium gas giant (38017 km radius) which orbits its star in 15232 Earth days, one day on MDH639.2 lasts 3 Earth hours. Its average temperature is 1219 K (946 C), its atmosphere mainly consists of hydrogen and it has 107 moons.
MDH639.3 is a medium gas giant (20559 km radius) which orbits its star in 28084 Earth days, one day on MDH639.3 lasts 3 Earth hours. Its average temperature is 1480 K (1207 C), its atmosphere mainly consists of hydrogen, helium and it has 89 moons.
More planetary details...

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Planetary Orbits

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Planetary Statistics

planet:MDH639.1MDH639.2MDH639.3
distance from star:14*106 km835*106 km1255*106 km
radius:4480 km38017 km20559 km
mass:719*1021 kg439565*1021 kg69517*1021 kg
surface gravity: 2.39 m/s2
0.24 Earths
20.2 m/s2
2.06 Earths
10.9 m/s2
1.11 Earths
escape velocity:4.628 km/s39.28 km/s21.24 km/s
year: 54 MDH639.1 days
34 Earth days
121856 MDH639.2 days
15232 Earth days
224672 MDH639.3 days
28084 Earth days
day:15 hrs3 hrs3 hrs
axial tilt:23°
temperature:1245 K
972 C
1219 K
946 C
1480 K
1207 C
atmosphere:35% H2
4% He
11% N2
49% O2
1% CO2
0% other
97% H2
3% He
0% other
88% H2
12% He
0% other
moons:010789
rings:2226

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