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UCD684: blue giant star with 3 planets

  UCD684.1   UCD684.2   UCD684.3  

Solar system 'UCD684' is a dual star system that comprises the stars 'UCD684.A' and 'UCD684.B' and the retinue of celestial objects gravitationally bound to them: 3 planets and their 21 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal components of this star system are the stars 'UCD684.A' and 'UCD684.B' that dominate it gravitationally. 'UCD684.A' is a blue giant class star that contains about 97% of the system's known mass, 'UCD684.B' is a yellow dwarf class star that contains about 2% of the system's known mass.

System 'UCD684' is located more than 4451 lightyears from the center of the galaxy.

This solar system comprises 3 planets

UCD684.1 is a very small terrestrial planet (2363 km radius) which orbits its star in 1 Earth days, one day on UCD684.1 lasts 48 Earth hours. Its average temperature is 1839 K (1566 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
UCD684.2 is a medium terrestrial planet (5364 km radius) which orbits its star in 2 Earth days, one day on UCD684.2 lasts 11 Earth hours. Its average temperature is 1635 K (1362 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
UCD684.3 is a large terrestrial planet (7650 km radius) which orbits its star in 910 Earth days, one day on UCD684.3 lasts 7 Earth hours. Its average temperature is 1025 K (752 C), its atmosphere mainly consists of hydrogen, helium and it has 21 moons.
More planetary details...

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Planetary Orbits

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Planetary Statistics

planet:UCD684.1UCD684.2UCD684.3
distance from star:1*106 km2*106 km127*106 km
radius:2363 km5364 km7650 km
mass:105*1021 kg1234*1021 kg3581*1021 kg
surface gravity: 1.25 m/s2
0.12 Earths
2.86 m/s2
0.29 Earths
4.08 m/s2
0.41 Earths
escape velocity:2.435 km/s5.541 km/s7.904 km/s
year: 0 UCD684.1 days
1 Earth days
4 UCD684.2 days
2 Earth days
3120 UCD684.3 days
910 Earth days
day:48 hrs11 hrs7 hrs
axial tilt:
temperature:1839 K
1566 C
1635 K
1362 C
1025 K
752 C
atmosphere:1% He
73% N2
22% O2
4% CO2
0% other
71% N2
26% O2
3% CO2
0% other
76% H2
24% He
0% other
moons:0021
rings:000

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