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NGJ216: red giant star with 4 planets

 
NGJ216.1
  NGJ216.2  
NGJ216.3
 
NGJ216.4
 

Solar system 'NGJ216' is a dual star system that comprises the stars 'NGJ216.A' and 'NGJ216.B' and the retinue of celestial objects gravitationally bound to them: 4 planets and their 163 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal components of this star system are the stars 'NGJ216.A' and 'NGJ216.B' that dominate it gravitationally. 'NGJ216.A' is a red giant class star that contains about 81% of the system's known mass, 'NGJ216.B' is a red giant class star that contains about 18% of the system's known mass.

System 'NGJ216' is located more than 3373 lightyears from the center of the galaxy.

This solar system comprises 4 planets

NGJ216.1 is a large terrestrial planet (8225 km radius) which orbits its star in 355 Earth days, one day on NGJ216.1 lasts 7 Earth hours. Its average temperature is 1998 K (1725 C), its atmosphere mainly consists of nitrogen, oxygen and it has 3 moons.
NGJ216.2 is a very large terrestrial planet (9523 km radius) which orbits its star in 1317 Earth days, one day on NGJ216.2 lasts 6 Earth hours. Its average temperature is 1394 K (1121 C), its atmosphere mainly consists of nitrogen, oxygen and it has 21 moons.
NGJ216.3 is a very large terrestrial planet (10472 km radius) which orbits its star in 2636 Earth days, one day on NGJ216.3 lasts 6 Earth hours. Its average temperature is 829 K (556 C), its atmosphere mainly consists of nitrogen, oxygen and it has 43 moons.
NGJ216.4 is a massive terrestrial planet (18000 km radius) which orbits its star in 12358 Earth days, one day on NGJ216.4 lasts 4 Earth hours. Its average temperature is 1465 K (1192 C), its atmosphere mainly consists of hydrogen and it has 96 moons.
More planetary details...

Location

Planetary Orbits

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Planetary Statistics

planet:NGJ216.1NGJ216.2NGJ216.3NGJ216.4
distance from star:68*106 km163*106 km259*106 km726*106 km
radius:8225 km9523 km10472 km18000 km
mass:4451*1021 kg6908*1021 kg9187*1021 kg46656*1021 kg
surface gravity: 4.39 m/s2
0.44 Earths
5.08 m/s2
0.51 Earths
5.59 m/s2
0.57 Earths
9.61 m/s2
0.98 Earths
escape velocity:8.499 km/s9.840 km/s10.82 km/s18.60 km/s
year: 1217 NGJ216.1 days
355 Earth days
5268 NGJ216.2 days
1317 Earth days
10544 NGJ216.3 days
2636 Earth days
74148 NGJ216.4 days
12358 Earth days
day:7 hrs6 hrs6 hrs4 hrs
axial tilt:18°160°11°
temperature:1998 K
1725 C
1394 K
1121 C
829 K
556 C
1465 K
1192 C
atmosphere:4% H2
1% He
68% N2
25% O2
2% CO2
0% other
8% H2
2% He
47% N2
41% O2
2% CO2
0% other
2% H2
1% He
66% N2
31% O2
0% other
94% H2
6% He
0% other
moons:3214396
rings:60414

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