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LKJ773: red giant star with 4 planets

 
LKJ773.1
  LKJ773.2  
LKJ773.3
 
LKJ773.4
 

Solar system 'LKJ773' comprises the star 'LKJ773' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 267 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'LKJ773', a red giant class star that contains about 99.99% of the system's known mass and dominates it gravitationally. LKJ773 is located more than 2073 lightyears from the center of the galaxy.

This solar system comprises 4 planets

LKJ773.1 is a medium terrestrial planet (5404 km radius) which orbits its star in 870 Earth days, one day on LKJ773.1 lasts 12 Earth hours. Its average temperature is 1743 K (1470 C), its atmosphere mainly consists of hydrogen and it has 11 moons.
LKJ773.2 is a medium gas giant (34314 km radius) which orbits its star in 49719 Earth days, one day on LKJ773.2 lasts 4 Earth hours. Its average temperature is 1493 K (1220 C), its atmosphere mainly consists of hydrogen, helium and it has 139 moons.
LKJ773.3 is a massive terrestrial planet (17234 km radius) which orbits its star in 91341 Earth days, one day on LKJ773.3 lasts 4 Earth hours. Its average temperature is 1265 K (992 C), its atmosphere mainly consists of hydrogen and it has 73 moons.
LKJ773.4 is a medium gas giant (21009 km radius) which orbits its star in 167804 Earth days, one day on LKJ773.4 lasts 4 Earth hours. Its average temperature is 1625 K (1352 C), its atmosphere mainly consists of hydrogen and it has 44 moons.
More planetary details...

Location

Planetary Orbits

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Planetary Statistics

planet:LKJ773.1LKJ773.2LKJ773.3LKJ773.4
distance from star:123*106 km1837*106 km2756*106 km4134*106 km
radius:5404 km34314 km17234 km21009 km
mass:1262*1021 kg323224*1021 kg40949*1021 kg74183*1021 kg
surface gravity: 2.88 m/s2
0.29 Earths
18.3 m/s2
1.87 Earths
9.20 m/s2
0.94 Earths
11.2 m/s2
1.14 Earths
escape velocity:5.583 km/s35.45 km/s17.80 km/s21.71 km/s
year: 1740 LKJ773.1 days
870 Earth days
298314 LKJ773.2 days
49719 Earth days
548046 LKJ773.3 days
91341 Earth days
1006824 LKJ773.4 days
167804 Earth days
day:12 hrs4 hrs4 hrs4 hrs
axial tilt:
temperature:1743 K
1470 C
1493 K
1220 C
1265 K
992 C
1625 K
1352 C
atmosphere:94% H2
6% He
0% other
76% H2
24% He
0% other
97% H2
3% He
0% other
96% H2
4% He
0% other
moons:111397344
rings:8039

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