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XAD990: red giant star with 4 planets

  XAD990.1  
XAD990.2
 
XAD990.3
  XAD990.4  

Solar system 'XAD990' comprises the star 'XAD990' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 294 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'XAD990', a red giant class star that contains about 99.99% of the system's known mass and dominates it gravitationally. XAD990 is located more than 4186 lightyears from the center of the galaxy.

This solar system comprises 4 planets

XAD990.1 is a large terrestrial planet (7813 km radius) which orbits its star in 305 Earth days, one day on XAD990.1 lasts 8 Earth hours. Its average temperature is 1363 K (1090 C), its atmosphere mainly consists of nitrogen, oxygen and it has 19 moons.
XAD990.2 is a very large terrestrial planet (10476 km radius) which orbits its star in 8672 Earth days, one day on XAD990.2 lasts 6 Earth hours. Its average temperature is 1204 K (931 C), its atmosphere mainly consists of hydrogen, helium and it has 131 moons.
XAD990.3 is a massive terrestrial planet (17952 km radius) which orbits its star in 15931 Earth days, one day on XAD990.3 lasts 4 Earth hours. Its average temperature is 1161 K (888 C), its atmosphere mainly consists of hydrogen, helium and it has 119 moons.
XAD990.4 is a medium terrestrial planet (6568 km radius) which orbits its star in 20943 Earth days, one day on XAD990.4 lasts 9 Earth hours. Its average temperature is 1678 K (1405 C), its atmosphere mainly consists of and it has 25 moons.
More planetary details...

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Planetary Orbits

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Planetary Statistics

planet:XAD990.1XAD990.2XAD990.3XAD990.4
distance from star:61*106 km573*106 km860*106 km1032*106 km
radius:7813 km10476 km17952 km6568 km
mass:3815*1021 kg9197*1021 kg46283*1021 kg2266*1021 kg
surface gravity: 4.17 m/s2
0.42 Earths
5.59 m/s2
0.57 Earths
9.58 m/s2
0.97 Earths
3.50 m/s2
0.35 Earths
escape velocity:8.073 km/s10.82 km/s18.55 km/s6.786 km/s
year: 915 XAD990.1 days
305 Earth days
34688 XAD990.2 days
8672 Earth days
95586 XAD990.3 days
15931 Earth days
55848 XAD990.4 days
20943 Earth days
day:8 hrs6 hrs4 hrs9 hrs
axial tilt:300°13°
temperature:1363 K
1090 C
1204 K
931 C
1161 K
888 C
1678 K
1405 C
atmosphere:3% H2
1% He
70% N2
24% O2
2% CO2
0% other
87% H2
13% He
0% other
86% H2
14% He
0% other
100% other
moons:1913111925
rings:019230

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