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UCD685: red dwarf star with 4 planets

  UCD685.1  
UCD685.2
  UCD685.3  
UCD685.4
 

Solar system 'UCD685' comprises the star 'UCD685' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 32 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'UCD685', a red dwarf class star that contains about 99.99% of the system's known mass and dominates it gravitationally. UCD685 is located more than 4451 lightyears from the center of the galaxy.

UCD685.2, the second planet in this system, may feature life forms. Its average temperature is 292K (19C) and it's atmosphere contains 37% of oxygen. One year on UCD685.2 lasts 427 days, one day lasts 14 hours. It's diameter is 9712 km, 0.7 times the diameter of the Earth.

This solar system comprises 4 planets

UCD685.1 is a small terrestrial planet (4017 km radius) which orbits its star in 115 Earth days, one day on UCD685.1 lasts 19 Earth hours. Its average temperature is 834 K (561 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
UCD685.2 is a small terrestrial planet (4856 km radius) which orbits its star in 427 Earth days, one day on UCD685.2 lasts 14 Earth hours. Its average temperature is 292 K (19 C), its atmosphere mainly consists of nitrogen, oxygen and it has 1 moons.
UCD685.3 is a very large terrestrial planet (9882 km radius) which orbits its star in 1297 Earth days, one day on UCD685.3 lasts 6 Earth hours. Its average temperature is 99 K (-174 C), its atmosphere mainly consists of nitrogen, carbon dioxide and it has 31 moons.
UCD685.4 is a very small terrestrial planet (2140 km radius) which orbits its star in 1706 Earth days, one day on UCD685.4 lasts 58 Earth hours. Its average temperature is 1954 K (1681 C), its atmosphere mainly consists of and it has 0 moons.
More planetary details...

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Planetary Orbits

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Planetary Statistics

planet:UCD685.1UCD685.2UCD685.3UCD685.4
distance from star:32*106 km77*106 km161*106 km194*106 km
radius:4017 km4856 km9882 km2140 km
mass:518*1021 kg916*1021 kg7720*1021 kg78*1021 kg
surface gravity: 2.14 m/s2
0.21 Earths
2.59 m/s2
0.26 Earths
5.27 m/s2
0.53 Earths
1.13 m/s2
0.11 Earths
escape velocity:4.148 km/s5.017 km/s10.21 km/s2.205 km/s
year: 145 UCD685.1 days
115 Earth days
732 UCD685.2 days
427 Earth days
5188 UCD685.3 days
1297 Earth days
705 UCD685.4 days
1706 Earth days
day:19 hrs14 hrs6 hrs58 hrs
axial tilt:10°21°283°29°
temperature:834 K
561 C
292 K
19 C
99 K
-174 C
1954 K
1681 C
atmosphere:57% N2
43% O2
0% other
6% H2
1% He
56% N2
37% O2
0% other
76% N2
2% O2
22% CO2
0% other
100% other
moons:01310
rings:03011

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