🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.46

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.58 AU - 0.64 AU

Year: 308 Days

Day: 39.1 Hours

Environment

Temp: -129 °C

Axial Tilt: 41 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 35,361,698 km

• M1: 80,184 km (0.107 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.51

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.54 AU - 0.7 AU

Year: 315 Days

Day: 33.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 1.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 35,361,698 km

• M1: 141,220 km (0.095 R)
• M2: 481,406 km (0.087 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.75

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.59 AU - 0.69 AU

Year: 331 Days

Day: 40.6 Hours

Environment

Temp: -125 °C

Axial Tilt: 36.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 35,361,698 km

• M1: 45,777 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 278.4

Radius: 9.9

Gravity: 2.84 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.73 AU - 1.03 AU

Year: 533 Days

Day: 5 Hours

Environment

Temp: -150 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 35,361,698 km

• M1: 123,269 km (0.111 R)
• M2: 432,338 km (0.1 R)
• M3: 853,456 km (0.114 R)
• M4: 1,727,706 km (0.091 R)
• M5: 2,225,867 km (0.028 R)
• M6: 3,051,497 km (0.11 R)
• M7: 3,432,074 km (0.097 R)
• M8: 4,476,866 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 75

Radius: 12

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.94 AU - 1.4 AU

Year: 817 Days

Day: 7.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 35,361,698 km

• M1: 150,196 km (0.104 R)
• M2: 869,612 km (0.085 R)
• M3: 1,579,155 km (0.103 R)
• M4: 2,332,081 km (0.047 R)
• M5: 2,884,995 km (0.116 R)
• M6: 3,589,751 km (0.043 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.7

Radius: 8.9

Gravity: 9.14 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 2.46 AU - 3.74 AU

Year: 3524 Days

Day: 8.8 Hours

Environment

Temp: -202 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 35,361,698 km

• M1: 114,891 km (0.094 R)
• M2: 413,489 km (0.084 R)
• M3: 720,613 km (0.078 R)
• M4: 997,967 km (0.051 R)
• M5: 1,650,813 km (0.097 R)
• M6: 1,945,820 km (0.087 R)
• M7: 2,334,924 km (0.043 R)
• M8: 2,842,808 km (0.062 R)
• M9: 3,123,304 km (0.102 R)
• M10: 3,461,246 km (0.097 R)
• M11: 3,949,833 km (0.03 R)
• M12: 4,460,709 km (0.082 R)
• M13: 5,695,789 km (0.094 R)
• M14: 6,058,714 km (0.066 R)
• M15: 7,534,497 km (0.106 R)
• M16: 9,504,252 km (0.084 R)
• M17: 9,975,784 km (0.112 R)
• M18: 10,258,076 km (0.086 R)
• M19: 11,309,898 km (0.069 R)
• M20: 13,824,788 km (0.088 R)
• M21: 16,077,134 km (0.073 R)
• M22: 20,378,372 km (0.113 R)
• M23: 21,162,713 km (0.11 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 436.4

Radius: 14.5

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 2.69 AU - 3.75 AU

Year: 3731 Days

Day: 12.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 35,361,698 km

• M1: 242,349 km (0.113 R)
• M2: 758,312 km (0.067 R)
• M3: 1,324,988 km (0.065 R)
• M4: 1,973,495 km (0.068 R)
• M5: 2,766,513 km (0.026 R)
• M6: 3,962,548 km (0.117 R)
• M7: 5,062,392 km (0.105 R)
• M8: 6,163,432 km (0.094 R)
• M9: 7,449,974 km (0.094 R)
• M10: 10,238,029 km (0.101 R)
• M11: 13,104,624 km (0.089 R)
• M12: 14,771,892 km (0.045 R)
• M13: 16,630,346 km (0.077 R)
• M14: 17,671,847 km (0.113 R)
• M15: 19,824,411 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 103

Radius: 7

Gravity: 2.1 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 6.97 AU - 10.27 AU

Year: 16341 Days

Day: 16.2 Hours

Environment

Temp: -226 °C

Axial Tilt: 42.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 35,361,698 km

• M1: 87,066 km (0.108 R)
• M2: 365,019 km (0.1 R)
• M3: 618,587 km (0.092 R)
• M4: 1,377,946 km (0.051 R)
• M5: 2,413,014 km (0.075 R)
• M6: 2,852,682 km (0.086 R)
• M7: 3,387,943 km (0.089 R)
• M8: 4,339,535 km (0.034 R)
• M9: 5,249,988 km (0.098 R)
• M10: 7,554,992 km (0.051 R)
• M11: 8,292,210 km (0.032 R)
• M12: 9,909,064 km (0.093 R)
• M13: 11,032,394 km (0.119 R)
• M14: 12,712,229 km (0.085 R)
• M15: 19,465,226 km (0.075 R)
• M16: 23,637,361 km (0.091 R)
• M17: 23,880,757 km (0.06 R)
• M18: 25,888,061 km (0.112 R)
• M19: 27,376,261 km (0.1 R)
• M20: 35,361,645 km (0.08 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 431 - 18,263 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit