🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.51

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.43 AU - 0.63 AU

Year: 249 Days

Day: 33.6 Hours

Environment

Temp: -118 °C

Axial Tilt: 0.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 994.9

Radius: 15

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.66 AU - 0.76 AU

Year: 386 Days

Day: 10.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,811,864 km

• M1: 186,549 km (0.103 R)
• M2: 654,939 km (0.109 R)
• M3: 1,123,480 km (0.112 R)
• M4: 1,908,420 km (0.104 R)
• M5: 2,376,512 km (0.119 R)
• M6: 3,186,734 km (0.076 R)
• M7: 4,040,040 km (0.101 R)
• M8: 4,557,948 km (0.107 R)
• M9: 5,296,213 km (0.066 R)
• M10: 6,077,413 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 123.9

Radius: 9.2

Gravity: 1.46 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.73 AU - 1.15 AU

Year: 588 Days

Day: 10 Hours

Environment

Temp: -153 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 56,811,864 km

• M1: 114,742 km (0.089 R)
• M2: 517,908 km (0.11 R)
• M3: 892,202 km (0.114 R)
• M4: 1,934,450 km (0.046 R)
• M5: 2,460,436 km (0.076 R)
• M6: 2,877,814 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 817.7

Radius: 9.3

Gravity: 9.45 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.75 AU - 1.19 AU

Year: 617 Days

Day: 7.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 56,811,864 km

• M1: 115,639 km (0.081 R)
• M2: 436,826 km (0.061 R)
• M3: 768,484 km (0.096 R)
• M4: 1,081,742 km (0.109 R)
• M5: 1,445,714 km (0.12 R)
• M6: 1,839,306 km (0.108 R)
• M7: 2,263,865 km (0.084 R)
• M8: 3,011,106 km (0.068 R)
• M9: 3,508,968 km (0.079 R)
• M10: 4,196,370 km (0.099 R)
• M11: 4,588,466 km (0.111 R)
• M12: 4,885,717 km (0.079 R)
• M13: 5,611,715 km (0.056 R)
• M14: 6,286,701 km (0.106 R)
• M15: 7,545,866 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.8

Radius: 14

Gravity: 1.47 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 3.18 AU - 4.36 AU

Year: 4726 Days

Day: 11.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 56,811,864 km

• M1: 174,282 km (0.118 R)
• M2: 707,149 km (0.083 R)
• M3: 1,217,427 km (0.076 R)
• M4: 1,754,185 km (0.057 R)
• M5: 5,661,232 km (0.049 R)
• M6: 6,450,511 km (0.108 R)
• M7: 7,787,018 km (0.107 R)
• M8: 10,440,585 km (0.064 R)
• M9: 13,695,984 km (0.068 R)
• M10: 16,910,693 km (0.096 R)
• M11: 20,849,156 km (0.098 R)
• M12: 21,549,723 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 67.5

Radius: 13.2

Gravity: 0.39 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 4.19 AU - 6.62 AU

Year: 8102 Days

Day: 10 Hours

Environment

Temp: -226 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 56,811,864 km

• M1: 188,194 km (0.089 R)
• M2: 743,501 km (0.107 R)
• M3: 1,488,648 km (0.114 R)
• M4: 2,877,665 km (0.117 R)
• M5: 4,473,126 km (0.107 R)
• M6: 5,188,653 km (0.089 R)
• M7: 5,749,196 km (0.109 R)
• M8: 6,540,868 km (0.096 R)
• M9: 7,021,077 km (0.092 R)
• M10: 7,832,346 km (0.045 R)
• M11: 12,640,272 km (0.036 R)
• M12: 13,164,912 km (0.034 R)
• M13: 14,025,399 km (0.117 R)
• M14: 14,874,666 km (0.107 R)
• M15: 15,908,686 km (0.103 R)
• M16: 16,676,123 km (0.06 R)
• M17: 18,563,001 km (0.089 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 594.6

Radius: 4.9

Gravity: 24.76 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 6.86 AU - 8.58 AU

Year: 13850 Days

Day: 17.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 56,811,864 km

• M1: 70,311 km (0.118 R)
• M2: 241,152 km (0.088 R)
• M3: 488,287 km (0.116 R)
• M4: 640,877 km (0.057 R)
• M5: 1,069,924 km (0.105 R)
• M6: 1,280,259 km (0.102 R)
• M7: 1,973,346 km (0.112 R)
• M8: 2,843,257 km (0.047 R)
• M9: 5,028,284 km (0.046 R)
• M10: 5,406,617 km (0.1 R)
• M11: 7,457,005 km (0.12 R)
• M12: 7,903,256 km (0.05 R)
• M13: 8,800,095 km (0.086 R)
• M14: 8,997,115 km (0.103 R)
• M15: 9,920,882 km (0.056 R)
• M16: 10,460,631 km (0.075 R)
• M17: 11,364,352 km (0.049 R)
• M18: 11,539,531 km (0.066 R)
• M19: 12,503,988 km (0.101 R)
• M20: 13,916,192 km (0.028 R)
• M21: 16,302,578 km (0.092 R)
• M22: 20,979,456 km (0.041 R)
• M23: 24,777,147 km (0.073 R)
• M24: 28,254,400 km (0.103 R)
• M25: 29,226,487 km (0.054 R)
• M26: 33,100,324 km (0.109 R)
• M27: 33,697,369 km (0.116 R)
• M28: 44,831,191 km (0.118 R)
• M29: 46,897,137 km (0.077 R)
• M30: 47,347,876 km (0.07 R)
• M31: 48,871,530 km (0.117 R)
• M32: 52,177,045 km (0.086 R)
• M33: 55,293,318 km (0.102 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 295 - 18,939 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit