🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.8 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.85

Radius: 1.28

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 1.37 AU - 1.81 AU

Year: 908 Days

Day: 45 Hours

Environment

Temp: -116 °C

Axial Tilt: 32.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.45

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 1.59 AU - 2.03 AU

Year: 1103 Days

Day: 44.9 Hours

Environment

Temp: -119 °C

Axial Tilt: 2.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 89,465,381 km

• M1: 97,837 km (0.048 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.22

Radius: 1.38

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.57 AU - 2.61 AU

Year: 1369 Days

Day: 34.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 9.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 89,465,381 km

• M1: 68,665 km (0.062 R)
• M2: 86,767 km (0.097 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.52

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 1.96 AU - 2.36 AU

Year: 1438 Days

Day: 19.1 Hours

Environment

Temp: -143 °C

Axial Tilt: 1.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 2.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761.8

Radius: 13.6

Gravity: 4.12 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 2.18 AU - 2.7 AU

Year: 1727 Days

Day: 5.5 Hours

Environment

Temp: -142 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 89,465,381 km

• M1: 169,195 km (0.101 R)
• M2: 658,829 km (0.099 R)
• M3: 1,203,515 km (0.093 R)
• M4: 1,853,518 km (0.079 R)
• M5: 2,974,754 km (0.11 R)
• M6: 3,798,888 km (0.09 R)
• M7: 5,620,093 km (0.079 R)
• M8: 6,671,766 km (0.066 R)
• M9: 7,149,282 km (0.114 R)
• M10: 8,323,027 km (0.106 R)
• M11: 10,512,542 km (0.099 R)
• M12: 13,601,588 km (0.059 R)
• M13: 15,217,095 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 396.4

Radius: 9.7

Gravity: 4.21 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 5.54 AU - 7.74 AU

Year: 7751 Days

Day: 7.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 89,465,381 km

• M1: 120,576 km (0.071 R)
• M2: 478,264 km (0.081 R)
• M3: 857,944 km (0.088 R)
• M4: 1,740,422 km (0.104 R)
• M5: 2,052,184 km (0.092 R)
• M6: 2,418,399 km (0.09 R)
• M7: 3,222,039 km (0.053 R)
• M8: 4,243,643 km (0.116 R)
• M9: 5,379,689 km (0.106 R)
• M10: 6,373,168 km (0.113 R)
• M11: 7,018,384 km (0.109 R)
• M12: 10,267,051 km (0.073 R)
• M13: 14,176,343 km (0.073 R)
• M14: 14,921,939 km (0.03 R)
• M15: 15,754,002 km (0.069 R)
• M16: 16,243,187 km (0.114 R)
• M17: 18,910,816 km (0.081 R)
• M18: 19,743,628 km (0.052 R)
• M19: 21,112,299 km (0.115 R)
• M20: 21,632,151 km (0.106 R)
• M21: 29,097,983 km (0.087 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 145.8

Radius: 12.7

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 7.19 AU - 7.75 AU

Year: 9249 Days

Day: 9.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 89,465,381 km

• M1: 157,975 km (0.081 R)
• M2: 565,031 km (0.112 R)
• M3: 1,965,566 km (0.072 R)
• M4: 2,652,221 km (0.043 R)
• M5: 3,615,930 km (0.071 R)
• M6: 4,340,582 km (0.114 R)
• M7: 4,775,463 km (0.105 R)
• M8: 5,649,115 km (0.096 R)
• M9: 6,168,967 km (0.078 R)
• M10: 6,944,034 km (0.118 R)
• M11: 9,147,461 km (0.113 R)
• M12: 9,662,826 km (0.086 R)
• M13: 10,926,778 km (0.101 R)
• M14: 11,326,653 km (0.114 R)
• M15: 15,159,949 km (0.096 R)
• M16: 16,687,343 km (0.083 R)
• M17: 24,886,055 km (0.088 R)
• M18: 25,736,070 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 884

Radius: 6.1

Gravity: 23.76 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 13.03 AU - 13.95 AU

Year: 22447 Days

Day: 18.6 Hours

Environment

Temp: -221 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 89,465,381 km

• M1: 80,035 km (0.101 R)
• M2: 597,195 km (0.12 R)
• M3: 790,924 km (0.101 R)
• M4: 1,489,396 km (0.081 R)
• M5: 2,923,292 km (0.106 R)
• M6: 8,607,562 km (0.112 R)
• M7: 9,121,581 km (0.03 R)
• M8: 14,229,899 km (0.1 R)
• M9: 15,192,711 km (0.097 R)
• M10: 16,981,153 km (0.115 R)
• M11: 18,716,040 km (0.069 R)
• M12: 26,960,977 km (0.106 R)
• M13: 29,697,272 km (0.053 R)
• M14: 31,531,641 km (0.118 R)
• M15: 34,849,871 km (0.084 R)
• M16: 50,087,162 km (0.055 R)
• M17: 67,659,527 km (0.111 R)
• M18: 68,105,627 km (0.091 R)
• M19: 73,848,540 km (0.091 R)
• M20: 74,796,243 km (0.05 R)
• M21: 79,161,957 km (0.083 R)
• M22: 81,155,648 km (0.109 R)
• M23: 83,951,333 km (0.074 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 494 - 18,321 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit