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QJD818: yellow dwarf star with 7 planets

  QJD818.1   QJD818.2   QJD818.3   QJD818.4   QJD818.5   QJD818.6   QJD818.7  

Solar system 'QJD818' comprises the star 'QJD818' and the retinue of celestial objects gravitationally bound to it: 7 planets and their 118 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'QJD818', a yellow dwarf class star that contains about 99.99% of the system's known mass and dominates it gravitationally. QJD818 is located more than 4014 lightyears from the center of the galaxy.

QJD818.2, the second planet in this system, may feature life forms. Its average temperature is 272K (-1C) and it's atmosphere contains 13% of oxygen. One year on QJD818.2 lasts 868 days, one day lasts 9 hours. It's diameter is 21526 km, 1.6 times the diameter of the Earth.

This solar system comprises 7 planets

QJD818.1 is a medium terrestrial planet (6787 km radius) which orbits its star in 140 Earth days, one day on QJD818.1 lasts 12 Earth hours. Its average temperature is 1551 K (1278 C), its atmosphere mainly consists of hydrogen, nitrogen, oxygen and it has 2 moons.
QJD818.2 is a very large terrestrial planet (10763 km radius) which orbits its star in 868 Earth days, one day on QJD818.2 lasts 9 Earth hours. Its average temperature is 272 K (-1 C), its atmosphere mainly consists of nitrogen, oxygen and it has 7 moons.
QJD818.3 is a small terrestrial planet (3617 km radius) which orbits its star in 1595 Earth days, one day on QJD818.3 lasts 26 Earth hours. Its average temperature is 181 K (-92 C), its atmosphere mainly consists of nitrogen, oxygen and it has 3 moons.
QJD818.4 is a large terrestrial planet (7760 km radius) which orbits its star in 2930 Earth days, one day on QJD818.4 lasts 11 Earth hours. Its average temperature is 107 K (-166 C), its atmosphere mainly consists of nitrogen, oxygen and it has 37 moons.
QJD818.5 is a very large terrestrial planet (9647 km radius) which orbits its star in 5383 Earth days, one day on QJD818.5 lasts 9 Earth hours. Its average temperature is 59 K (-214 C), its atmosphere mainly consists of nitrogen, oxygen and it has 31 moons.
QJD818.6 is a large terrestrial planet (8541 km radius) which orbits its star in 9889 Earth days, one day on QJD818.6 lasts 10 Earth hours. Its average temperature is 31 K (-242 C), its atmosphere mainly consists of nitrogen, oxygen and it has 22 moons.
QJD818.7 is a large terrestrial planet (8193 km radius) which orbits its star in 18168 Earth days, one day on QJD818.7 lasts 10 Earth hours. Its average temperature is 16 K (-257 C), its atmosphere mainly consists of nitrogen, oxygen and it has 16 moons.
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Planetary Statistics

planet:QJD818.1QJD818.2QJD818.3QJD818.4QJD818.5
distance from star:36*106 km123*106 km185*106 km278*106 km417*106 km
radius:6787 km10763 km3617 km7760 km9647 km
mass:2501*1021 kg9974*1021 kg378*1021 kg3738*1021 kg7182*1021 kg
surface gravity: 3.62 m/s2
0.37 Earths
5.74 m/s2
0.58 Earths
1.92 m/s2
0.19 Earths
4.14 m/s2
0.42 Earths
5.15 m/s2
0.52 Earths
escape velocity:7.013 km/s11.12 km/s3.734 km/s8.018 km/s9.968 km/s
year: 280 QJD818.1 days
140 Earth days
2314 QJD818.2 days
868 Earth days
1472 QJD818.3 days
1595 Earth days
6392 QJD818.4 days
2930 Earth days
14354 QJD818.5 days
5383 Earth days
day:12 hrs9 hrs26 hrs11 hrs9 hrs
axial tilt:13°24°24°10°155°
temperature:1551 K
1278 C
272 K
-1 C
181 K
-92 C
107 K
-166 C
59 K
-214 C
atmosphere:30% H2
4% He
20% N2
45% O2
1% CO2
0% other
86% N2
13% O2
1% CO2
0% other
53% N2
47% O2
0% other
71% N2
26% O2
3% CO2
0% other
8% H2
2% He
55% N2
33% O2
2% CO2
0% other
moons:2733731
rings:00000

planet:QJD818.6QJD818.7
distance from star:626*106 km939*106 km
radius:8541 km8193 km
mass:4984*1021 kg4399*1021 kg
surface gravity: 4.56 m/s2
0.46 Earths
4.37 m/s2
0.44 Earths
escape velocity:8.825 km/s8.465 km/s
year: 23733 QJD818.6 days
9889 Earth days
43603 QJD818.7 days
18168 Earth days
day:10 hrs10 hrs
axial tilt:
temperature:31 K
-242 C
16 K
-257 C
atmosphere:87% N2
12% O2
1% CO2
0% other
69% N2
29% O2
2% CO2
0% other
moons:2216
rings:00

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