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SJD639: red dwarf star with 4 planets

  SJD639.1   SJD639.2   SJD639.3  
SJD639.4
 

Solar system 'SJD639' comprises the star 'SJD639' and the retinue of celestial objects gravitationally bound to it: 4 planets and their 178 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'SJD639', a red dwarf class star that contains about 99.63% of the system's known mass and dominates it gravitationally. SJD639 is located more than 4405 lightyears from the center of the galaxy.

This solar system comprises 4 planets

SJD639.1 is a large terrestrial planet (7245 km radius) which orbits its star in 137 Earth days, one day on SJD639.1 lasts 8 Earth hours. Its average temperature is 238 K (-35 C), its atmosphere mainly consists of nitrogen, oxygen and it has 3 moons.
SJD639.2 is a medium terrestrial planet (5493 km radius) which orbits its star in 514 Earth days, one day on SJD639.2 lasts 12 Earth hours. Its average temperature is 81 K (-192 C), its atmosphere mainly consists of nitrogen, oxygen and it has 9 moons.
SJD639.3 is a large terrestrial planet (8810 km radius) which orbits its star in 1381 Earth days, one day on SJD639.3 lasts 7 Earth hours. Its average temperature is 32 K (-241 C), its atmosphere mainly consists of nitrogen, carbon dioxide and it has 19 moons.
SJD639.4 is a large gas giant (50692 km radius) which orbits its star in 78803 Earth days, one day on SJD639.4 lasts 4 Earth hours. Its average temperature is 1287 K (1014 C), its atmosphere mainly consists of hydrogen, helium and it has 147 moons.
More planetary details...

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Planetary Orbits

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Planetary Statistics

planet:SJD639.1SJD639.2SJD639.3SJD639.4
distance from star:36*106 km87*106 km168*106 km2497*106 km
radius:7245 km5493 km8810 km50692 km
mass:3042*1021 kg1325*1021 kg5470*1021 kg1042097*1021 kg
surface gravity: 3.86 m/s2
0.39 Earths
2.93 m/s2
0.29 Earths
4.70 m/s2
0.48 Earths
27.0 m/s2
2.76 Earths
escape velocity:7.486 km/s5.674 km/s9.103 km/s52.38 km/s
year: 411 SJD639.1 days
137 Earth days
1028 SJD639.2 days
514 Earth days
4734 SJD639.3 days
1381 Earth days
472818 SJD639.4 days
78803 Earth days
day:8 hrs12 hrs7 hrs4 hrs
axial tilt:314°11°22°
temperature:238 K
-35 C
81 K
-192 C
32 K
-241 C
1287 K
1014 C
atmosphere:75% N2
25% O2
0% other
70% N2
29% O2
1% CO2
0% other
33% N2
67% CO2
0% other
86% H2
14% He
0% other
moons:3919147
rings:0007

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