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TDB865: red giant star with 4 planets

  TDB865.1   TDB865.2  
TDB865.3
 
TDB865.4
 

Solar system 'TDB865' is a dual star system that comprises the stars 'TDB865.A' and 'TDB865.B' and the retinue of celestial objects gravitationally bound to them: 4 planets and their 415 moons, as well as asteroids, meteoroids, planetoids, comets, and interplanetary dust.

The principal components of this star system are the stars 'TDB865.A' and 'TDB865.B' that dominate it gravitationally. 'TDB865.A' is a red giant class star that contains about 82% of the system's known mass, 'TDB865.B' is a yellow dwarf class star that contains about 17% of the system's known mass.

System 'TDB865' is located more than 868 lightyears from the center of the galaxy.

This solar system comprises 4 planets

TDB865.1 is a very large terrestrial planet (10088 km radius) which orbits its star in 638 Earth days, one day on TDB865.1 lasts 6 Earth hours. Its average temperature is 497 K (224 C), its atmosphere mainly consists of nitrogen, oxygen and it has 41 moons.
TDB865.2 is a medium gas giant (30602 km radius) which orbits its star in 14966 Earth days, one day on TDB865.2 lasts 4 Earth hours. Its average temperature is 1191 K (918 C), its atmosphere mainly consists of hydrogen, helium and it has 137 moons.
TDB865.3 is a medium gas giant (31122 km radius) which orbits its star in 44645 Earth days, one day on TDB865.3 lasts 4 Earth hours. Its average temperature is 1973 K (1700 C), its atmosphere mainly consists of hydrogen and it has 106 moons.
TDB865.4 is a large gas giant (76143 km radius) which orbits its star in 86614 Earth days, one day on TDB865.4 lasts 4 Earth hours. Its average temperature is 1379 K (1106 C), its atmosphere mainly consists of hydrogen and it has 131 moons.
More planetary details...

Location

Planetary Orbits

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Planetary Statistics

planet:TDB865.1TDB865.2TDB865.3TDB865.4
distance from star:100*106 km825*106 km1710*106 km2660*106 km
radius:10088 km30602 km31122 km76143 km
mass:8213*1021 kg229265*1021 kg241152*1021 kg3531668*1021 kg
surface gravity: 5.38 m/s2
0.55 Earths
16.3 m/s2
1.66 Earths
16.6 m/s2
1.69 Earths
40.6 m/s2
4.15 Earths
escape velocity:10.42 km/s31.62 km/s32.16 km/s78.68 km/s
year: 2552 TDB865.1 days
638 Earth days
89796 TDB865.2 days
14966 Earth days
267870 TDB865.3 days
44645 Earth days
519684 TDB865.4 days
86614 Earth days
day:6 hrs4 hrs4 hrs4 hrs
axial tilt:30°51°55°
temperature:497 K
224 C
1191 K
918 C
1973 K
1700 C
1379 K
1106 C
atmosphere:1% H2
1% He
66% N2
32% O2
0% other
79% H2
21% He
0% other
94% H2
6% He
0% other
98% H2
2% He
0% other
moons:41137106131
rings:00113

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