MCD638: yellow dwarf star with 20 planets

Solar system 'MCD638' comprises the star 'MCD638' and the retinue of celestial objects gravitationally bound to it: 20 planets and their 948 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'MCD638', a yellow dwarf class star that contains about 99.53% of the system's known mass and dominates it gravitationally. MCD638 is located more than 2819 lightyears from the center of the galaxy.

MCD638.4, the fourth planet in this system, may feature life forms. Its average temperature is 316K (43C) and it's atmosphere contains 27% of oxygen. One year on MCD638.4 lasts 1265 days, one day lasts 22 hours. It's diameter is 22066 km, 1.7 times the diameter of the Earth.

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This solar system comprises 20 planets

	MCD638.1 is a small terrestrial planet (4369 km radius) which orbits its star in 47 Earth days, one day on MCD638.1 lasts 33 Earth hours. Its average temperature is 1584 K (1311 C), its atmosphere mainly consists of nitrogen and it has 0 moons.
	MCD638.2 is a large terrestrial planet (7294 km radius) which orbits its star in 236 Earth days, one day on MCD638.2 lasts 24 Earth hours. Its average temperature is 1478 K (1205 C), its atmosphere mainly consists of nitrogen, carbon dioxide and it has 5 moons.
	MCD638.3 is a medium terrestrial planet (6314 km radius) which orbits its star in 576 Earth days, one day on MCD638.3 lasts 26 Earth hours. Its average temperature is 676 K (403 C), its atmosphere mainly consists of nitrogen, oxygen and it has 6 moons.
	MCD638.4 is a very large terrestrial planet (11033 km radius) which orbits its star in 1265 Earth days, one day on MCD638.4 lasts 22 Earth hours. Its average temperature is 316 K (43 C), its atmosphere mainly consists of nitrogen, oxygen and it has 25 moons.
	MCD638.5 is a small terrestrial planet (4000 km radius) which orbits its star in 2324 Earth days, one day on MCD638.5 lasts 35 Earth hours. Its average temperature is 175 K (-98 C), its atmosphere mainly consists of nitrogen and it has 7 moons.
	MCD638.6 is a very large terrestrial planet (9682 km radius) which orbits its star in 4270 Earth days, one day on MCD638.6 lasts 22 Earth hours. Its average temperature is 93 K (-180 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
	MCD638.7 is a large terrestrial planet (7564 km radius) which orbits its star in 7846 Earth days, one day on MCD638.7 lasts 24 Earth hours. Its average temperature is 48 K (-225 C), its atmosphere mainly consists of nitrogen and it has 20 moons.
	MCD638.8 is a medium terrestrial planet (5019 km radius) which orbits its star in 14414 Earth days, one day on MCD638.8 lasts 29 Earth hours. Its average temperature is 24 K (-249 C), its atmosphere mainly consists of nitrogen, oxygen and it has 23 moons.
	MCD638.9 is a very large terrestrial planet (10032 km radius) which orbits its star in 26480 Earth days, one day on MCD638.9 lasts 22 Earth hours. Its average temperature is 12 K (-261 C), its atmosphere mainly consists of nitrogen, oxygen and it has 48 moons.
	MCD638.10 is a medium terrestrial planet (5254 km radius) which orbits its star in 48647 Earth days, one day on MCD638.10 lasts 29 Earth hours. Its average temperature is 6 K (-267 C), its atmosphere mainly consists of nitrogen, oxygen and it has 22 moons.
	MCD638.11 is a medium terrestrial planet (5444 km radius) which orbits its star in 89370 Earth days, one day on MCD638.11 lasts 28 Earth hours. Its average temperature is 2 K (-271 C), its atmosphere mainly consists of nitrogen, oxygen and it has 22 moons.
	MCD638.12 is a very large terrestrial planet (10988 km radius) which orbits its star in 164184 Earth days, one day on MCD638.12 lasts 22 Earth hours. Its average temperature is 1 K (-272 C), its atmosphere mainly consists of nitrogen, oxygen and it has 24 moons.
	MCD638.13 is a medium terrestrial planet (6465 km radius) which orbits its star in 301626 Earth days, one day on MCD638.13 lasts 25 Earth hours. Its average temperature is 0 K (-273 C), its atmosphere mainly consists of nitrogen, oxygen and it has 44 moons.
	MCD638.14 is a medium terrestrial planet (6721 km radius) which orbits its star in 554122 Earth days, one day on MCD638.14 lasts 25 Earth hours. Its average temperature is 1598 K (1325 C), its atmosphere mainly consists of hydrogen, helium and it has 140 moons.
	MCD638.15 is a large gas giant (46751 km radius) which orbits its star in 1017988 Earth days, one day on MCD638.15 lasts 20 Earth hours. Its average temperature is 1139 K (866 C), its atmosphere mainly consists of hydrogen, helium and it has 115 moons.
	MCD638.16 is a large gas giant (46532 km radius) which orbits its star in 1870163 Earth days, one day on MCD638.16 lasts 20 Earth hours. Its average temperature is 1376 K (1103 C), its atmosphere mainly consists of hydrogen and it has 70 moons.
	MCD638.17 is a large gas giant (75597 km radius) which orbits its star in 3435709 Earth days, one day on MCD638.17 lasts 20 Earth hours. Its average temperature is 1192 K (919 C), its atmosphere mainly consists of hydrogen, helium and it has 134 moons.
	MCD638.18 is a large gas giant (70429 km radius) which orbits its star in 6311801 Earth days, one day on MCD638.18 lasts 20 Earth hours. Its average temperature is 1098 K (825 C), its atmosphere mainly consists of hydrogen, helium and it has 57 moons.
	MCD638.19 is a large gas giant (46366 km radius) which orbits its star in 11595519 Earth days, one day on MCD638.19 lasts 20 Earth hours. Its average temperature is 1361 K (1088 C), its atmosphere mainly consists of hydrogen, helium and it has 123 moons.
	MCD638.20 is a medium terrestrial planet (6609 km radius) which orbits its star in 21302330 Earth days, one day on MCD638.20 lasts 25 Earth hours. Its average temperature is 1408 K (1135 C), its atmosphere mainly consists of hydrogen and it has 63 moons.
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Planetary Statistics

planet:	MCD638.1	MCD638.2	MCD638.3	MCD638.4	MCD638.5
distance from star:	17*10⁶ km	52*10⁶ km	94*10⁶ km	158*10⁶ km	238*10⁶ km
radius:	4369 km	7294 km	6314 km	11033 km	4000 km
mass:	667*10²¹ kg	3104*10²¹ kg	2013*10²¹ kg	10744*10²¹ kg	512*10²¹ kg
surface gravity:	2.33 m/s² 0.23 Earths	3.89 m/s² 0.39 Earths	3.37 m/s² 0.34 Earths	5.89 m/s² 0.60 Earths	2.13 m/s² 0.21 Earths
escape velocity:	4.514 km/s	7.536 km/s	6.523 km/s	11.40 km/s	4.133 km/s
year:	34 MCD638.1 days 47 Earth days	236 MCD638.2 days 236 Earth days	531 MCD638.3 days 576 Earth days	1380 MCD638.4 days 1265 Earth days	1593 MCD638.5 days 2324 Earth days
day:	33 hrs	24 hrs	26 hrs	22 hrs	35 hrs
axial tilt:	6°	346°	14°	10°	13°
temperature:	1584 K 1311 C	1478 K 1205 C	676 K 403 C	316 K 43 C	175 K -98 C
atmosphere:	84% N2 10% O2 6% CO2 0% other	84% N2 4% O2 12% CO2 0% other	84% N2 12% O2 4% CO2 0% other	72% N2 27% O2 1% CO2 0% other	89% N2 9% O2 2% CO2 0% other
moons:	0	5	6	25	7
rings:	0	0	0	0	0

planet:	MCD638.6	MCD638.7	MCD638.8	MCD638.9	MCD638.10
distance from star:	357*10⁶ km	536*10⁶ km	804*10⁶ km	1207*10⁶ km	1811*10⁶ km
radius:	9682 km	7564 km	5019 km	10032 km	5254 km
mass:	7260*10²¹ kg	3462*10²¹ kg	1011*10²¹ kg	8077*10²¹ kg	1160*10²¹ kg
surface gravity:	5.16 m/s² 0.52 Earths	4.03 m/s² 0.41 Earths	2.67 m/s² 0.27 Earths	5.35 m/s² 0.54 Earths	2.80 m/s² 0.28 Earths
escape velocity:	10.00 km/s	7.816 km/s	5.185 km/s	10.36 km/s	5.428 km/s
year:	4658 MCD638.6 days 4270 Earth days	7846 MCD638.7 days 7846 Earth days	11928 MCD638.8 days 14414 Earth days	28887 MCD638.9 days 26480 Earth days	40259 MCD638.10 days 48647 Earth days
day:	22 hrs	24 hrs	29 hrs	22 hrs	29 hrs
axial tilt:	28°	16°	3°	6°	30°
temperature:	93 K -180 C	48 K -225 C	24 K -249 C	12 K -261 C	6 K -267 C
atmosphere:	88% N2 12% O2 0% other	85% N2 8% O2 7% CO2 0% other	55% N2 44% O2 1% CO2 0% other	2% H2 1% He 73% N2 23% O2 1% CO2 0% other	4% H2 2% He 64% N2 28% O2 2% CO2 0% other
moons:	0	20	23	48	22
rings:	0	0	0	0	0

planet:	MCD638.11	MCD638.12	MCD638.13	MCD638.14	MCD638.15
distance from star:	2716*10⁶ km	4074*10⁶ km	6112*10⁶ km	9168*10⁶ km	13752*10⁶ km
radius:	5444 km	10988 km	6465 km	6721 km	46751 km
mass:	1290*10²¹ kg	10613*10²¹ kg	2161*10²¹ kg	2428*10²¹ kg	817452*10²¹ kg
surface gravity:	2.90 m/s² 0.29 Earths	5.86 m/s² 0.59 Earths	3.45 m/s² 0.35 Earths	3.58 m/s² 0.36 Earths	24.9 m/s² 2.54 Earths
escape velocity:	5.624 km/s	11.35 km/s	6.679 km/s	6.944 km/s	48.31 km/s
year:	76602 MCD638.11 days 89370 Earth days	179109 MCD638.12 days 164184 Earth days	289560 MCD638.13 days 301626 Earth days	531957 MCD638.14 days 554122 Earth days	1221585 MCD638.15 days 1017988 Earth days
day:	28 hrs	22 hrs	25 hrs	25 hrs	20 hrs
axial tilt:	12°	24°	18°	0°	5°
temperature:	2 K -271 C	1 K -272 C	0 K -273 C	1598 K 1325 C	1139 K 866 C
atmosphere:	9% H2 2% He 50% N2 38% O2 1% CO2 0% other	52% N2 47% O2 1% CO2 0% other	66% N2 34% O2 0% other	88% H2 12% He 0% other	87% H2 13% He 0% other
moons:	22	24	44	140	115
rings:	0	0	0	0	10

planet:	MCD638.16	MCD638.17	MCD638.18	MCD638.19	MCD638.20
distance from star:	20628*10⁶ km	30943*10⁶ km	46415*10⁶ km	69622*10⁶ km	104434*10⁶ km
radius:	46532 km	75597 km	70429 km	46366 km	6609 km
mass:	806018*10²¹ kg	3456238*10²¹ kg	2794760*10²¹ kg	797423*10²¹ kg	2309*10²¹ kg
surface gravity:	24.8 m/s² 2.53 Earths	40.3 m/s² 4.12 Earths	37.6 m/s² 3.84 Earths	24.7 m/s² 2.52 Earths	3.52 m/s² 0.35 Earths
escape velocity:	48.08 km/s	78.12 km/s	72.78 km/s	47.91 km/s	6.829 km/s
year:	2244195 MCD638.16 days 1870163 Earth days	4122850 MCD638.17 days 3435709 Earth days	7574161 MCD638.18 days 6311801 Earth days	13914622 MCD638.19 days 11595519 Earth days	20450236 MCD638.20 days 21302330 Earth days
day:	20 hrs	20 hrs	20 hrs	20 hrs	25 hrs
axial tilt:	6°	46°	6°	0°	3°
temperature:	1376 K 1103 C	1192 K 919 C	1098 K 825 C	1361 K 1088 C	1408 K 1135 C
atmosphere:	90% H2 10% He 0% other	83% H2 17% He 0% other	76% H2 24% He 0% other	87% H2 13% He 0% other	92% H2 8% He 0% other
moons:	70	134	57	123	63
rings:	0	7	5	0	12

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