🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.32

Radius: 1.12

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.61 AU - 0.67 AU

Year: 336 Days

Day: 23.8 Hours

Environment

Temp: -139 °C

Axial Tilt: 7.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.21

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.52 AU - 0.78 AU

Year: 344 Days

Day: 22.2 Hours

Environment

Temp: -136 °C

Axial Tilt: 31.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 758.5

Radius: 12.8

Gravity: 4.63 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.67 AU - 0.85 AU

Year: 435 Days

Day: 11.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 76,274,510 km

• M1: 159,172 km (0.047 R)
• M2: 620,831 km (0.115 R)
• M3: 1,416,991 km (0.049 R)
• M4: 2,003,714 km (0.046 R)
• M5: 2,529,999 km (0.066 R)
• M6: 3,204,835 km (0.115 R)
• M7: 3,826,115 km (0.06 R)
• M8: 4,915,636 km (0.096 R)
• M9: 5,917,793 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 426.2

Radius: 8.3

Gravity: 6.19 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.71 AU - 0.99 AU

Year: 514 Days

Day: 12.3 Hours

Environment

Temp: -148 °C

Axial Tilt: 49.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 76,274,510 km

• M1: 103,223 km (0.062 R)
• M2: 366,664 km (0.12 R)
• M3: 687,253 km (0.116 R)
• M4: 1,105,079 km (0.06 R)
• M5: 1,700,030 km (0.075 R)
• M6: 1,959,732 km (0.047 R)
• M7: 2,381,449 km (0.078 R)
• M8: 3,348,449 km (0.088 R)
• M9: 3,648,393 km (0.109 R)
• M10: 3,992,618 km (0.082 R)
• M11: 4,731,332 km (0.112 R)
• M12: 5,330,920 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.9

Radius: 9

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.81 AU - 1.29 AU

Year: 706 Days

Day: 7.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 76,274,510 km

• M1: 111,899 km (0.037 R)
• M2: 485,894 km (0.097 R)
• M3: 933,491 km (0.084 R)
• M4: 1,751,791 km (0.078 R)
• M5: 2,189,215 km (0.082 R)
• M6: 3,320,923 km (0.094 R)
• M7: 3,693,422 km (0.065 R)
• M8: 4,252,768 km (0.118 R)
• M9: 4,948,398 km (0.114 R)
• M10: 5,717,930 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 688.1

Radius: 12.4

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 2.08 AU - 2.3 AU

Year: 2126 Days

Day: 7.2 Hours

Environment

Temp: -202 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 76,274,510 km

• M1: 154,983 km (0.095 R)
• M2: 644,468 km (0.089 R)
• M3: 1,091,466 km (0.11 R)
• M4: 1,970,354 km (0.056 R)
• M5: 2,620,356 km (0.102 R)
• M6: 3,409,485 km (0.106 R)
• M7: 5,182,818 km (0.091 R)
• M8: 5,941,878 km (0.111 R)
• M9: 7,920,908 km (0.113 R)
• M10: 9,027,334 km (0.095 R)
• M11: 10,019,916 km (0.082 R)
• M12: 12,060,431 km (0.04 R)
• M13: 15,240,881 km (0.115 R)
• M14: 16,497,504 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 405.5

Radius: 12.6

Gravity: 2.55 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 2.32 AU - 2.32 AU

Year: 2318 Days

Day: 9.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 76,274,510 km

• M1: 156,928 km (0.08 R)
• M2: 574,905 km (0.116 R)
• M3: 1,041,500 km (0.086 R)
• M4: 1,472,342 km (0.116 R)
• M5: 1,882,091 km (0.109 R)
• M6: 2,576,524 km (0.087 R)
• M7: 3,826,414 km (0.115 R)
• M8: 4,883,024 km (0.061 R)
• M9: 5,312,370 km (0.107 R)
• M10: 6,100,751 km (0.103 R)
• M11: 6,807,152 km (0.094 R)
• M12: 7,511,459 km (0.085 R)
• M13: 7,997,801 km (0.108 R)
• M14: 9,650,708 km (0.114 R)
• M15: 11,558,530 km (0.109 R)
• M16: 12,091,697 km (0.116 R)
• M17: 13,706,157 km (0.097 R)
• M18: 14,609,130 km (0.076 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 764.6

Radius: 3.3

Gravity: 70.21 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 6.01 AU - 7.89 AU

Year: 12020 Days

Day: 21.7 Hours

Environment

Temp: -228 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 76,274,510 km

• M1: 47,722 km (0.057 R)
• M2: 470,485 km (0.11 R)
• M3: 807,829 km (0.095 R)
• M4: 994,527 km (0.049 R)
• M5: 1,864,289 km (0.108 R)
• M6: 2,408,227 km (0.108 R)
• M7: 2,596,570 km (0.108 R)
• M8: 2,772,348 km (0.105 R)
• M9: 4,728,489 km (0.063 R)
• M10: 5,835,364 km (0.075 R)
• M11: 6,488,658 km (0.112 R)
• M12: 6,978,142 km (0.106 R)
• M13: 8,308,815 km (0.077 R)
• M14: 15,042,963 km (0.074 R)
• M15: 17,392,248 km (0.115 R)
• M16: 17,624,275 km (0.085 R)
• M17: 21,357,041 km (0.116 R)
• M18: 25,783,642 km (0.104 R)
• M19: 28,156,862 km (0.094 R)
• M20: 28,476,703 km (0.084 R)
• M21: 28,799,086 km (0.06 R)
• M22: 32,858,724 km (0.099 R)
• M23: 33,094,789 km (0.116 R)
• M24: 38,974,135 km (0.035 R)
• M25: 39,106,230 km (0.08 R)
• M26: 40,174,059 km (0.084 R)
• M27: 42,928,156 km (0.099 R)
• M28: 45,805,522 km (0.092 R)
• M29: 47,141,281 km (0.072 R)
• M30: 48,655,660 km (0.042 R)
• M31: 49,424,893 km (0.084 R)
• M32: 53,719,099 km (0.114 R)
• M33: 56,040,709 km (0.098 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 727.2

Radius: 6.2

Gravity: 18.92 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 9.03 AU - 10.15 AU

Year: 19482 Days

Day: 21.9 Hours

Environment

Temp: -232 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 76,274,510 km

• M1: 80,035 km (0.105 R)
• M2: 389,254 km (0.05 R)
• M3: 633,397 km (0.113 R)
• M4: 1,267,692 km (0.11 R)
• M5: 2,013,438 km (0.068 R)
• M6: 2,481,529 km (0.079 R)
• M7: 2,865,547 km (0.112 R)
• M8: 3,543,974 km (0.054 R)
• M9: 5,682,176 km (0.088 R)
• M10: 5,926,469 km (0.106 R)
• M11: 7,639,963 km (0.069 R)
• M12: 8,770,026 km (0.102 R)
• M13: 9,431,398 km (0.07 R)
• M14: 9,890,364 km (0.065 R)
• M15: 12,142,261 km (0.062 R)
• M16: 13,820,300 km (0.061 R)
• M17: 14,114,260 km (0.033 R)
• M18: 18,325,141 km (0.062 R)
• M19: 18,679,987 km (0.094 R)
• M20: 20,428,636 km (0.092 R)
• M21: 20,810,261 km (0.054 R)
• M22: 22,688,013 km (0.032 R)
• M23: 23,615,669 km (0.031 R)
• M24: 25,108,656 km (0.109 R)
• M25: 27,464,374 km (0.107 R)
• M26: 31,079,406 km (0.099 R)
• M27: 33,262,488 km (0.109 R)
• M28: 44,437,898 km (0.097 R)
• M29: 45,887,800 km (0.106 R)
• M30: 49,908,094 km (0.046 R)
• M31: 55,440,073 km (0.113 R)
• M32: 58,640,570 km (0.071 R)
• M33: 62,360,920 km (0.037 R)
• M34: 67,071,158 km (0.101 R)
• M35: 72,013,273 km (0.102 R)
• M36: 73,787,504 km (0.052 R)
• M37: 75,137,326 km (0.119 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 194 - 14,791 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit