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MDJ439: red dwarf star with 2 planets

  MDJ439.1  
MDJ439.2
 

Solar system 'MDJ439' comprises the star 'MDJ439' and the retinue of celestial objects gravitationally bound to it: 2 planets and their 125 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'MDJ439', a red dwarf class star that contains about 99.99% of the system's known mass and dominates it gravitationally. MDJ439 is located more than 2819 lightyears from the center of the galaxy.

This solar system comprises 2 planets

MDJ439.1 is a very large terrestrial planet (9684 km radius) which orbits its star in 428 Earth days, one day on MDJ439.1 lasts 4 Earth hours. Its average temperature is 55 K (-218 C), its atmosphere mainly consists of nitrogen, oxygen and it has 17 moons.
MDJ439.2 is a very large terrestrial planet (9750 km radius) which orbits its star in 8110 Earth days, one day on MDJ439.2 lasts 4 Earth hours. Its average temperature is 1205 K (932 C), its atmosphere mainly consists of hydrogen and it has 108 moons.
More planetary details...

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Planetary Orbits

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Planetary Statistics

planet:MDJ439.1MDJ439.2
distance from star:77*106 km548*106 km
radius:9684 km9750 km
mass:7265*1021 kg7414*1021 kg
surface gravity: 5.17 m/s2
0.52 Earths
5.20 m/s2
0.53 Earths
escape velocity:10.00 km/s10.07 km/s
year: 2568 MDJ439.1 days
428 Earth days
48660 MDJ439.2 days
8110 Earth days
day:4 hrs4 hrs
axial tilt:
temperature:55 K
-218 C
1205 K
932 C
atmosphere:1% H2
2% He
65% N2
30% O2
2% CO2
0% other
98% H2
2% He
0% other
moons:17108
rings:02

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