🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.44 AU - 0.66 AU

Year: 263 Days

Day: 28.6 Hours

Environment

Temp: -117 °C

Axial Tilt: 27.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.53

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.58 AU - 0.74 AU

Year: 346 Days

Day: 30.8 Hours

Environment

Temp: -143 °C

Axial Tilt: 29.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 460.8

Radius: 13

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.73 AU - 1.15 AU

Year: 588 Days

Day: 11.2 Hours

Environment

Temp: -149 °C

Axial Tilt: 24.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 72,112,044 km

• M1: 167,699 km (0.116 R)
• M2: 607,517 km (0.091 R)
• M3: 1,197,531 km (0.083 R)
• M4: 1,823,299 km (0.092 R)
• M5: 2,732,405 km (0.082 R)
• M6: 3,613,537 km (0.113 R)
• M7: 4,439,317 km (0.054 R)
• M8: 5,726,307 km (0.06 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 758.4

Radius: 11.3

Gravity: 5.94 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.16 AU - 1.18 AU

Year: 817 Days

Day: 12.2 Hours

Environment

Temp: -156 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 72,112,044 km

• M1: 144,661 km (0.041 R)
• M2: 548,575 km (0.069 R)
• M3: 929,302 km (0.098 R)
• M4: 1,471,295 km (0.118 R)
• M5: 2,187,270 km (0.072 R)
• M6: 2,562,761 km (0.107 R)
• M7: 3,006,917 km (0.099 R)
• M8: 4,161,813 km (0.079 R)
• M9: 4,657,879 km (0.108 R)
• M10: 6,092,972 km (0.096 R)
• M11: 6,667,876 km (0.08 R)
• M12: 7,466,879 km (0.116 R)
• M13: 8,000,943 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 331.2

Radius: 12.7

Gravity: 2.05 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 1.13 AU - 1.33 AU

Year: 881 Days

Day: 6.7 Hours

Environment

Temp: -168 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 72,112,044 km

• M1: 158,424 km (0.091 R)
• M2: 570,716 km (0.097 R)
• M3: 974,181 km (0.04 R)
• M4: 1,390,662 km (0.083 R)
• M5: 1,812,528 km (0.107 R)
• M6: 2,234,693 km (0.11 R)
• M7: 3,670,683 km (0.083 R)
• M8: 4,991,333 km (0.107 R)
• M9: 5,489,793 km (0.065 R)
• M10: 5,946,067 km (0.119 R)
• M11: 6,527,105 km (0.061 R)
• M12: 7,447,580 km (0.057 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 935.4

Radius: 12.9

Gravity: 5.62 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.04 AU - 1.64 AU

Year: 1002 Days

Day: 9.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 72,112,044 km

• M1: 160,519 km (0.114 R)
• M2: 701,315 km (0.063 R)
• M3: 1,557,015 km (0.076 R)
• M4: 2,041,861 km (0.113 R)
• M5: 2,894,868 km (0.086 R)
• M6: 3,973,020 km (0.111 R)
• M7: 5,363,383 km (0.116 R)
• M8: 6,037,620 km (0.078 R)
• M9: 7,353,184 km (0.046 R)
• M10: 7,762,185 km (0.084 R)
• M11: 9,553,021 km (0.119 R)
• M12: 10,706,271 km (0.115 R)
• M13: 11,166,135 km (0.077 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 933.9

Radius: 3.2

Gravity: 91.2 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 7.61 AU - 9.25 AU

Year: 15804 Days

Day: 16.7 Hours

Environment

Temp: -228 °C

Axial Tilt: 21.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 72,112,044 km

• M1: 40,541 km (0.113 R)
• M2: 241,900 km (0.091 R)
• M3: 660,774 km (0.088 R)
• M4: 1,011,431 km (0.103 R)
• M5: 2,313,980 km (0.076 R)
• M6: 2,606,444 km (0.103 R)
• M7: 3,749,970 km (0.108 R)
• M8: 4,652,494 km (0.046 R)
• M9: 4,827,523 km (0.05 R)
• M10: 6,348,186 km (0.107 R)
• M11: 6,695,402 km (0.114 R)
• M12: 7,009,408 km (0.115 R)
• M13: 8,060,333 km (0.115 R)
• M14: 8,467,239 km (0.085 R)
• M15: 9,157,334 km (0.101 R)
• M16: 10,057,315 km (0.054 R)
• M17: 11,900,511 km (0.098 R)
• M18: 13,177,478 km (0.081 R)
• M19: 14,468,807 km (0.055 R)
• M20: 15,607,396 km (0.119 R)
• M21: 17,133,594 km (0.106 R)
• M22: 18,756,581 km (0.072 R)
• M23: 21,619,585 km (0.066 R)
• M24: 22,303,995 km (0.089 R)
• M25: 22,601,845 km (0.079 R)
• M26: 22,801,707 km (0.084 R)
• M27: 23,103,895 km (0.1 R)
• M28: 24,339,274 km (0.067 R)
• M29: 31,428,717 km (0.095 R)
• M30: 38,341,934 km (0.104 R)
• M31: 38,769,036 km (0.067 R)
• M32: 39,632,964 km (0.039 R)
• M33: 44,929,028 km (0.104 R)
• M34: 49,322,717 km (0.082 R)
• M35: 52,580,510 km (0.045 R)
• M36: 60,862,248 km (0.117 R)
• M37: 64,004,252 km (0.048 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: 369 - 12,351 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit