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LKK273: red giant star with 4 planets

  LKK273.1   LKK273.2   LKK273.3   LKK273.4  

Solar system 'LKK273' comprises the star 'LKK273' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 170 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'LKK273', a red giant class star that contains about 99.97% of the system's known mass and dominates it gravitationally. LKK273 is located more than 4867 lightyears from the center of the galaxy.

This solar system comprises 4 planets

LKK273.1 is a small terrestrial planet (4622 km radius) which orbits its star in 42 Earth days, one day on LKK273.1 lasts 15 Earth hours. Its average temperature is 1861 K (1588 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
LKK273.2 is a very small terrestrial planet (2391 km radius) which orbits its star in 84 Earth days, one day on LKK273.2 lasts 47 Earth hours. Its average temperature is 1473 K (1200 C), its atmosphere mainly consists of hydrogen, nitrogen, oxygen and it has 0 moons.
LKK273.3 is a very large terrestrial planet (9455 km radius) which orbits its star in 742 Earth days, one day on LKK273.3 lasts 6 Earth hours. Its average temperature is 1960 K (1687 C), its atmosphere mainly consists of nitrogen, oxygen and it has 48 moons.
LKK273.4 is a large gas giant (77604 km radius) which orbits its star in 115561 Earth days, one day on LKK273.4 lasts 4 Earth hours. Its average temperature is 1242 K (969 C), its atmosphere mainly consists of hydrogen, helium and it has 122 moons.
More planetary details...

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Planetary Orbits

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Planetary Statistics

planet:LKK273.1LKK273.2LKK273.3LKK273.4
distance from star:16*106 km26*106 km111*106 km3224*106 km
radius:4622 km2391 km9455 km77604 km
mass:789*1021 kg109*1021 kg6761*1021 kg3738886*1021 kg
surface gravity: 2.46 m/s2
0.25 Earths
1.27 m/s2
0.12 Earths
5.04 m/s2
0.51 Earths
41.4 m/s2
4.23 Earths
escape velocity:4.773 km/s2.466 km/s9.769 km/s80.19 km/s
year: 67 LKK273.1 days
42 Earth days
42 LKK273.2 days
84 Earth days
2968 LKK273.3 days
742 Earth days
693366 LKK273.4 days
115561 Earth days
day:15 hrs47 hrs6 hrs4 hrs
axial tilt:15°28°
temperature:1861 K
1588 C
1473 K
1200 C
1960 K
1687 C
1242 K
969 C
atmosphere:87% N2
11% O2
2% CO2
0% other
11% H2
2% He
52% N2
33% O2
2% CO2
0% other
79% N2
17% O2
4% CO2
0% other
87% H2
13% He
0% other
moons:0048122
rings:0000

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