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UJK257: yellow dwarf star with 4 planets

  UJK257.1  
UJK257.2
 
UJK257.3
 
UJK257.4
 

Solar system 'UJK257' comprises the star 'UJK257' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 338 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'UJK257', a yellow dwarf class star that contains about 99.8% of the system's known mass and dominates it gravitationally. UJK257 is located more than 1440 lightyears from the center of the galaxy.

UJK257.1, the first planet in this system, may feature life forms. Its average temperature is 334K (61C) and it's atmosphere contains 34% of oxygen. One year on UJK257.1 lasts 379 days, one day lasts 6 hours. It's diameter is 20190 km, 1.5 times the diameter of the Earth.

This solar system comprises 4 planets

UJK257.1 is a very large terrestrial planet (10095 km radius) which orbits its star in 379 Earth days, one day on UJK257.1 lasts 6 Earth hours. Its average temperature is 334 K (61 C), its atmosphere mainly consists of nitrogen, oxygen and it has 9 moons.
UJK257.2 is a medium gas giant (35253 km radius) which orbits its star in 40447 Earth days, one day on UJK257.2 lasts 4 Earth hours. Its average temperature is 1902 K (1629 C), its atmosphere mainly consists of hydrogen and it has 124 moons.
UJK257.3 is a large gas giant (68217 km radius) which orbits its star in 74307 Earth days, one day on UJK257.3 lasts 4 Earth hours. Its average temperature is 1035 K (762 C), its atmosphere mainly consists of hydrogen, helium and it has 130 moons.
UJK257.4 is a medium gas giant (31630 km radius) which orbits its star in 145228 Earth days, one day on UJK257.4 lasts 4 Earth hours. Its average temperature is 1091 K (818 C), its atmosphere mainly consists of hydrogen and it has 75 moons.
More planetary details...

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Planetary Orbits

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Planetary Statistics

planet:UJK257.1UJK257.2UJK257.3UJK257.4
distance from star:71*106 km1601*106 km2402*106 km3754*106 km
radius:10095 km35253 km68217 km31630 km
mass:8230*1021 kg350492*1021 kg2539614*1021 kg253155*1021 kg
surface gravity: 5.39 m/s2
0.55 Earths
18.8 m/s2
1.92 Earths
36.4 m/s2
3.72 Earths
16.8 m/s2
1.71 Earths
escape velocity:10.43 km/s36.42 km/s70.49 km/s32.68 km/s
year: 1516 UJK257.1 days
379 Earth days
242682 UJK257.2 days
40447 Earth days
445842 UJK257.3 days
74307 Earth days
871368 UJK257.4 days
145228 Earth days
day:6 hrs4 hrs4 hrs4 hrs
axial tilt:20°24°
temperature:334 K
61 C
1902 K
1629 C
1035 K
762 C
1091 K
818 C
atmosphere:64% N2
34% O2
2% CO2
0% other
90% H2
10% He
0% other
85% H2
15% He
0% other
98% H2
2% He
0% other
moons:912413075
rings:01823

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