VKK121: red supergiant star with 5 planets

Solar system 'VKK121' comprises the star 'VKK121' and the retinue of celestial objects gravitationally bound to it: 5 planets and their 124 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal component of this star system is the star 'VKK121', a red supergiant class star that contains about 99.99% of the system's known mass and dominates it gravitationally. VKK121 is located more than 4640 lightyears from the center of the galaxy.

This solar system comprises 5 planets

	VKK121.1 is a small terrestrial planet (4263 km radius) which orbits its star in 2 Earth days, one day on VKK121.1 lasts 18 Earth hours. Its average temperature is 1997 K (1724 C), its atmosphere mainly consists of nitrogen, oxygen and it has 0 moons.
	VKK121.2 is a medium terrestrial planet (5385 km radius) which orbits its star in 119 Earth days, one day on VKK121.2 lasts 13 Earth hours. Its average temperature is 1284 K (1011 C), its atmosphere mainly consists of nitrogen and it has 0 moons.
	VKK121.3 is a very small terrestrial planet (2490 km radius) which orbits its star in 219 Earth days, one day on VKK121.3 lasts 45 Earth hours. Its average temperature is 1712 K (1439 C), its atmosphere mainly consists of nitrogen, carbon dioxide and it has 0 moons.
	VKK121.4 is a huge terrestrial planet (14271 km radius) which orbits its star in 5012 Earth days, one day on VKK121.4 lasts 6 Earth hours. Its average temperature is 1274 K (1001 C), its atmosphere mainly consists of hydrogen, helium and it has 62 moons.
	VKK121.5 is a large terrestrial planet (8477 km radius) which orbits its star in 6589 Earth days, one day on VKK121.5 lasts 8 Earth hours. Its average temperature is 1261 K (988 C), its atmosphere mainly consists of and it has 62 moons.
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Location

Planetary Orbits

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Planetary Statistics

planet:	VKK121.1	VKK121.2	VKK121.3	VKK121.4	VKK121.5
distance from star:	2*10⁶ km	32*10⁶ km	49*10⁶ km	398*10⁶ km	477*10⁶ km
radius:	4263 km	5385 km	2490 km	14271 km	8477 km
mass:	619*10²¹ kg	1249*10²¹ kg	123*10²¹ kg	23251*10²¹ kg	4873*10²¹ kg
surface gravity:	2.27 m/s² 0.23 Earths	2.87 m/s² 0.29 Earths	1.32 m/s² 0.13 Earths	7.61 m/s² 0.77 Earths	4.52 m/s² 0.46 Earths
escape velocity:	4.402 km/s	5.564 km/s	2.567 km/s	14.74 km/s	8.759 km/s
year:	2 VKK121.1 days 2 Earth days	219 VKK121.2 days 119 Earth days	116 VKK121.3 days 219 Earth days	20048 VKK121.4 days 5012 Earth days	19767 VKK121.5 days 6589 Earth days
day:	18 hrs	13 hrs	45 hrs	6 hrs	8 hrs
axial tilt:	268°	1°	9°	2°	11°
temperature:	1997 K 1724 C	1284 K 1011 C	1712 K 1439 C	1274 K 1001 C	1261 K 988 C
atmosphere:	88% N2 11% O2 1% CO2 0% other	82% N2 9% O2 9% CO2 0% other	85% N2 15% CO2 0% other	79% H2 21% He 0% other	100% other
moons:	0	0	0	62	62
rings:	3	0	1	4	0

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