MDC290: red dwarf star with 8 planets

Solar system 'MDC290' comprises the star 'MDC290' and the retinue of celestial objects gravitationally bound to it: 8 planets and their 245 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'MDC290', a red dwarf class star that contains about 99.9% of the system's known mass and dominates it gravitationally. MDC290 is located more than 2819 lightyears from the center of the galaxy.

This solar system comprises 8 planets

	MDC290.1 is a very large terrestrial planet (9033 km radius) which orbits its star in 461 Earth days, one day on MDC290.1 lasts 11 Earth hours. Its average temperature is 37 K (-236 C), its atmosphere mainly consists of nitrogen, oxygen and it has 26 moons.
	MDC290.2 is a medium terrestrial planet (6267 km radius) which orbits its star in 847 Earth days, one day on MDC290.2 lasts 14 Earth hours. Its average temperature is 33 K (-240 C), its atmosphere mainly consists of nitrogen, oxygen and it has 23 moons.
	MDC290.3 is a very large terrestrial planet (9042 km radius) which orbits its star in 1557 Earth days, one day on MDC290.3 lasts 11 Earth hours. Its average temperature is 22 K (-251 C), its atmosphere mainly consists of nitrogen, oxygen and it has 8 moons.
	MDC290.4 is a medium terrestrial planet (6411 km radius) which orbits its star in 2860 Earth days, one day on MDC290.4 lasts 14 Earth hours. Its average temperature is 13 K (-260 C), its atmosphere mainly consists of nitrogen, oxygen and it has 32 moons.
	MDC290.5 is a small terrestrial planet (3903 km radius) which orbits its star in 5255 Earth days, one day on MDC290.5 lasts 24 Earth hours. Its average temperature is 7 K (-266 C), its atmosphere mainly consists of nitrogen, oxygen and it has 16 moons.
	MDC290.6 is a medium terrestrial planet (5566 km radius) which orbits its star in 9654 Earth days, one day on MDC290.6 lasts 16 Earth hours. Its average temperature is 3 K (-270 C), its atmosphere mainly consists of nitrogen, oxygen and it has 19 moons.
	MDC290.7 is a very large terrestrial planet (9624 km radius) which orbits its star in 17735 Earth days, one day on MDC290.7 lasts 10 Earth hours. Its average temperature is 2 K (-271 C), its atmosphere mainly consists of nitrogen, carbon dioxide and it has 18 moons.
	MDC290.8 is a medium gas giant (28587 km radius) which orbits its star in 32582 Earth days, one day on MDC290.8 lasts 8 Earth hours. Its average temperature is 1037 K (764 C), its atmosphere mainly consists of hydrogen, helium and it has 103 moons.
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Planetary Orbits

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Planetary Statistics

planet:	MDC290.1	MDC290.2	MDC290.3	MDC290.4	MDC290.5
distance from star:	81*10⁶ km	121*10⁶ km	182*10⁶ km	273*10⁶ km	410*10⁶ km
radius:	9033 km	6267 km	9042 km	6411 km	3903 km
mass:	5896*10²¹ kg	1969*10²¹ kg	5914*10²¹ kg	2107*10²¹ kg	475*10²¹ kg
surface gravity:	4.82 m/s² 0.49 Earths	3.34 m/s² 0.34 Earths	4.82 m/s² 0.49 Earths	3.42 m/s² 0.34 Earths	2.08 m/s² 0.21 Earths
escape velocity:	9.334 km/s	6.476 km/s	9.343 km/s	6.623 km/s	4.030 km/s
year:	1005 MDC290.1 days 461 Earth days	1452 MDC290.2 days 847 Earth days	3397 MDC290.3 days 1557 Earth days	4902 MDC290.4 days 2860 Earth days	5255 MDC290.5 days 5255 Earth days
day:	11 hrs	14 hrs	11 hrs	14 hrs	24 hrs
axial tilt:	30°	21°	20°	26°	312°
temperature:	37 K -236 C	33 K -240 C	22 K -251 C	13 K -260 C	7 K -266 C
atmosphere:	9% H2 3% He 52% N2 35% O2 1% CO2 0% other	8% H2 2% He 61% N2 29% O2 0% other	1% H2 2% He 66% N2 30% O2 1% CO2 0% other	73% N2 26% O2 1% CO2 0% other	69% N2 29% O2 2% CO2 0% other
moons:	26	23	8	32	16
rings:	0	0	0	0	0

planet:	MDC290.6	MDC290.7	MDC290.8
distance from star:	616*10⁶ km	924*10⁶ km	1386*10⁶ km
radius:	5566 km	9624 km	28587 km
mass:	1379*10²¹ kg	7131*10²¹ kg	186894*10²¹ kg
surface gravity:	2.97 m/s² 0.30 Earths	5.13 m/s² 0.52 Earths	15.2 m/s² 1.55 Earths
escape velocity:	5.750 km/s	9.945 km/s	29.54 km/s
year:	14481 MDC290.6 days 9654 Earth days	42564 MDC290.7 days 17735 Earth days	97746 MDC290.8 days 32582 Earth days
day:	16 hrs	10 hrs	8 hrs
axial tilt:	22°	0°	5°
temperature:	3 K -270 C	2 K -271 C	1037 K 764 C
atmosphere:	51% N2 49% O2 0% other	82% N2 6% O2 12% CO2 0% other	77% H2 23% He 0% other
moons:	19	18	103
rings:	0	0	24

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