🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.86

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.6 AU - 0.6 AU

Year: 296 Days

Day: 18.6 Hours

Environment

Temp: -130 °C

Axial Tilt: 31.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 313.1

Radius: 8

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.57 AU - 0.83 AU

Year: 372 Days

Day: 12 Hours

Environment

Temp: -146 °C

Axial Tilt: 44.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 21,648,802 km

• M1: 102,774 km (0.114 R)
• M2: 352,752 km (0.097 R)
• M3: 616,942 km (0.073 R)
• M4: 967,300 km (0.079 R)
• M5: 1,265,149 km (0.043 R)
• M6: 1,561,951 km (0.117 R)
• M7: 1,891,216 km (0.062 R)
• M8: 2,187,719 km (0.06 R)
• M9: 2,763,521 km (0.102 R)
• M10: 3,147,240 km (0.027 R)
• M11: 3,426,090 km (0.074 R)
• M12: 3,823,422 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.2

Radius: 12.3

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.66 AU - 0.84 AU

Year: 413 Days

Day: 9 Hours

Environment

Temp: -146 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 21,648,802 km

• M1: 153,039 km (0.12 R)
• M2: 622,028 km (0.097 R)
• M3: 1,043,296 km (0.095 R)
• M4: 1,485,357 km (0.075 R)
• M5: 1,882,839 km (0.098 R)
• M6: 2,909,679 km (0.106 R)
• M7: 3,714,964 km (0.116 R)
• M8: 4,304,828 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 649.9

Radius: 10.6

Gravity: 5.78 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.78 AU - 1.08 AU

Year: 570 Days

Day: 9.5 Hours

Environment

Temp: -159 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 21,648,802 km

• M1: 131,796 km (0.103 R)
• M2: 467,493 km (0.076 R)
• M3: 815,757 km (0.073 R)
• M4: 1,283,251 km (0.104 R)
• M5: 1,693,448 km (0.117 R)
• M6: 2,237,236 km (0.038 R)
• M7: 2,665,834 km (0.099 R)
• M8: 3,468,875 km (0.084 R)
• M9: 4,117,532 km (0.099 R)
• M10: 4,941,816 km (0.119 R)
• M11: 5,359,194 km (0.115 R)
• M12: 6,169,865 km (0.091 R)
• M13: 6,634,666 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 611.5

Radius: 9.8

Gravity: 6.37 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.97 AU - 1.03 AU

Year: 636 Days

Day: 13.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 21,648,802 km

• M1: 121,922 km (0.107 R)
• M2: 620,233 km (0.043 R)
• M3: 946,805 km (0.102 R)
• M4: 1,254,079 km (0.1 R)
• M5: 1,606,831 km (0.102 R)
• M6: 1,912,609 km (0.076 R)
• M7: 2,559,620 km (0.059 R)
• M8: 2,946,180 km (0.108 R)
• M9: 3,422,799 km (0.061 R)
• M10: 4,271,169 km (0.049 R)
• M11: 4,609,410 km (0.113 R)
• M12: 4,932,541 km (0.084 R)
• M13: 5,288,135 km (0.042 R)
• M14: 5,881,590 km (0.112 R)
• M15: 6,844,103 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 994.2

Radius: 9.7

Gravity: 10.57 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 1.39 AU - 2.27 AU

Year: 1574 Days

Day: 5.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 121.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 21,648,802 km

• M1: 127,757 km (0.072 R)
• M2: 454,329 km (0.1 R)
• M3: 859,290 km (0.095 R)
• M4: 1,202,767 km (0.081 R)
• M5: 1,729,950 km (0.075 R)
• M6: 3,043,569 km (0.076 R)
• M7: 3,444,491 km (0.113 R)
• M8: 4,121,721 km (0.04 R)
• M9: 4,492,274 km (0.082 R)
• M10: 5,505,800 km (0.03 R)
• M11: 5,859,599 km (0.089 R)
• M12: 6,612,675 km (0.099 R)
• M13: 7,177,257 km (0.088 R)
• M14: 9,559,902 km (0.106 R)
• M15: 9,865,082 km (0.09 R)
• M16: 10,211,850 km (0.059 R)
• M17: 12,227,083 km (0.083 R)
• M18: 14,852,525 km (0.114 R)
• M19: 15,586,752 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 811

Radius: 13.4

Gravity: 4.52 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 2.02 AU - 3.34 AU

Year: 2790 Days

Day: 10.8 Hours

Environment

Temp: -209 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 21,648,802 km

• M1: 166,802 km (0.096 R)
• M2: 598,990 km (0.077 R)
• M3: 1,562,251 km (0.109 R)
• M4: 2,203,577 km (0.092 R)
• M5: 2,933,315 km (0.111 R)
• M6: 3,682,501 km (0.062 R)
• M7: 4,124,114 km (0.042 R)
• M8: 4,806,729 km (0.079 R)
• M9: 5,641,186 km (0.063 R)
• M10: 6,148,173 km (0.097 R)
• M11: 7,726,132 km (0.034 R)
• M12: 8,942,512 km (0.07 R)
• M13: 10,127,626 km (0.092 R)
• M14: 10,838,815 km (0.059 R)
• M15: 13,688,056 km (0.099 R)
• M16: 15,464,530 km (0.078 R)
• M17: 16,089,550 km (0.099 R)
• M18: 16,569,460 km (0.104 R)
• M19: 17,113,697 km (0.12 R)
• M20: 19,894,422 km (0.1 R)
• M21: 21,074,002 km (0.085 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 508 - 13,135 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit