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VBJ991: red dwarf star with 4 planets

  VBJ991.1   VBJ991.2   VBJ991.3   VBJ991.4  

Solar system 'VBJ991' comprises the star 'VBJ991' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 79 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'VBJ991', a red dwarf class star that contains about 99.99% of the system's known mass and dominates it gravitationally. VBJ991 is located more than 1440 lightyears from the center of the galaxy.

This solar system comprises 4 planets

VBJ991.1 is a medium terrestrial planet (5610 km radius) which orbits its star in 225 Earth days, one day on VBJ991.1 lasts 11 Earth hours. Its average temperature is 458 K (185 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
VBJ991.2 is a medium terrestrial planet (6490 km radius) which orbits its star in 721 Earth days, one day on VBJ991.2 lasts 9 Earth hours. Its average temperature is 194 K (-79 C), its atmosphere mainly consists of nitrogen, oxygen and it has 9 moons.
VBJ991.3 is a very large terrestrial planet (10314 km radius) which orbits its star in 1759 Earth days, one day on VBJ991.3 lasts 6 Earth hours. Its average temperature is 88 K (-185 C), its atmosphere mainly consists of nitrogen and it has 35 moons.
VBJ991.4 is a very large terrestrial planet (9780 km radius) which orbits its star in 3231 Earth days, one day on VBJ991.4 lasts 6 Earth hours. Its average temperature is 52 K (-221 C), its atmosphere mainly consists of nitrogen, oxygen and it has 35 moons.
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Planetary Orbits

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Planetary Statistics

planet:VBJ991.1VBJ991.2VBJ991.3VBJ991.4
distance from star:50*106 km109*106 km198*106 km297*106 km
radius:5610 km6490 km10314 km9780 km
mass:1412*1021 kg2186*1021 kg8777*1021 kg7483*1021 kg
surface gravity: 2.99 m/s2
0.30 Earths
3.46 m/s2
0.35 Earths
5.50 m/s2
0.56 Earths
5.22 m/s2
0.53 Earths
escape velocity:5.796 km/s6.705 km/s10.65 km/s10.10 km/s
year: 490 VBJ991.1 days
225 Earth days
1922 VBJ991.2 days
721 Earth days
7036 VBJ991.3 days
1759 Earth days
12924 VBJ991.4 days
3231 Earth days
day:11 hrs9 hrs6 hrs6 hrs
axial tilt:18°26°
temperature:458 K
185 C
194 K
-79 C
88 K
-185 C
52 K
-221 C
atmosphere:2% He
73% N2
25% O2
0% other
88% N2
12% O2
0% other
87% N2
8% O2
5% CO2
0% other
2% He
67% N2
30% O2
1% CO2
0% other
moons:093535
rings:0000

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