🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.28

Radius: 1.39

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.53 AU - 0.65 AU

Year: 288 Days

Day: 20.2 Hours

Environment

Temp: -129 °C

Axial Tilt: 35.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.4

Radius: 11.6

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.96 AU - 1.04 AU

Year: 636 Days

Day: 11.4 Hours

Environment

Temp: -166 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 30,010,184 km

• M1: 162,014 km (0.101 R)
• M2: 670,198 km (0.052 R)
• M3: 1,078,451 km (0.059 R)
• M4: 1,619,547 km (0.073 R)
• M5: 2,126,683 km (0.077 R)
• M6: 2,811,243 km (0.025 R)
• M7: 3,185,687 km (0.091 R)
• M8: 3,771,213 km (0.059 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421.3

Radius: 11.1

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.55 AU - 1.91 AU

Year: 1447 Days

Day: 10.1 Hours

Environment

Temp: -178 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 30,010,184 km

• M1: 138,079 km (0.025 R)
• M2: 597,643 km (0.102 R)
• M3: 1,934,300 km (0.045 R)
• M4: 2,291,839 km (0.116 R)
• M5: 4,383,966 km (0.067 R)
• M6: 5,444,315 km (0.111 R)
• M7: 7,049,052 km (0.052 R)
• M8: 7,520,584 km (0.078 R)
• M9: 8,389,897 km (0.087 R)
• M10: 9,237,070 km (0.061 R)
• M11: 10,233,691 km (0.106 R)
• M12: 10,806,950 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 881.2

Radius: 11.6

Gravity: 6.55 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 1.95 AU - 2.09 AU

Year: 1825 Days

Day: 12.3 Hours

Environment

Temp: -187 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 30,010,184 km

• M1: 144,362 km (0.116 R)
• M2: 517,160 km (0.095 R)
• M3: 993,479 km (0.108 R)
• M4: 1,403,078 km (0.086 R)
• M5: 2,198,341 km (0.117 R)
• M6: 3,002,728 km (0.058 R)
• M7: 3,790,660 km (0.097 R)
• M8: 5,013,025 km (0.071 R)
• M9: 5,560,254 km (0.093 R)
• M10: 7,048,752 km (0.087 R)
• M11: 7,766,523 km (0.106 R)
• M12: 8,787,678 km (0.033 R)
• M13: 9,347,623 km (0.107 R)
• M14: 9,861,342 km (0.097 R)
• M15: 13,349,665 km (0.069 R)
• M16: 14,001,762 km (0.084 R)
• M17: 14,403,283 km (0.038 R)
• M18: 16,281,335 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 910.7

Radius: 13.8

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 2.51 AU - 2.59 AU

Year: 2589 Days

Day: 10.6 Hours

Environment

Temp: -207 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 30,010,184 km

• M1: 171,589 km (0.11 R)
• M2: 637,885 km (0.113 R)
• M3: 1,137,991 km (0.077 R)
• M4: 1,624,782 km (0.114 R)
• M5: 2,376,661 km (0.083 R)
• M6: 3,244,927 km (0.085 R)
• M7: 3,961,800 km (0.091 R)
• M8: 5,307,284 km (0.059 R)
• M9: 7,148,684 km (0.119 R)
• M10: 7,709,077 km (0.085 R)
• M11: 8,708,541 km (0.053 R)
• M12: 11,839,175 km (0.084 R)
• M13: 12,715,071 km (0.05 R)
• M14: 13,822,544 km (0.107 R)
• M15: 14,595,965 km (0.104 R)
• M16: 16,441,853 km (0.095 R)
• M17: 18,381,240 km (0.033 R)
• M18: 20,904,657 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 938.9

Radius: 14

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 3.85 AU - 4.29 AU

Year: 5221 Days

Day: 12.4 Hours

Environment

Temp: -206 °C

Axial Tilt: 46 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 30,010,184 km

• M1: 174,132 km (0.063 R)
• M2: 691,741 km (0.085 R)
• M3: 1,148,612 km (0.093 R)
• M4: 2,438,894 km (0.119 R)
• M5: 3,473,962 km (0.109 R)
• M6: 4,365,415 km (0.08 R)
• M7: 5,612,763 km (0.085 R)
• M8: 6,875,817 km (0.055 R)
• M9: 7,855,983 km (0.097 R)
• M10: 8,762,695 km (0.03 R)
• M11: 9,959,478 km (0.102 R)
• M12: 13,868,171 km (0.105 R)
• M13: 14,722,525 km (0.099 R)
• M14: 15,916,166 km (0.086 R)
• M15: 18,025,197 km (0.051 R)
• M16: 22,097,401 km (0.054 R)
• M17: 22,636,551 km (0.068 R)
• M18: 24,469,873 km (0.07 R)
• M19: 28,611,790 km (0.106 R)
• M20: 30,090,415 km (0.102 R)
• M21: 31,911,769 km (0.044 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 167.9

Radius: 4.5

Gravity: 8.29 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 5.78 AU - 6.78 AU

Year: 10006 Days

Day: 15.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 30,010,184 km

• M1: 55,950 km (0.052 R)
• M2: 524,041 km (0.082 R)
• M3: 720,613 km (0.112 R)
• M4: 2,504,568 km (0.09 R)
• M5: 2,822,164 km (0.051 R)
• M6: 2,971,612 km (0.071 R)
• M7: 4,147,451 km (0.066 R)
• M8: 4,746,591 km (0.1 R)
• M9: 5,121,633 km (0.113 R)
• M10: 7,871,541 km (0.116 R)
• M11: 8,056,444 km (0.113 R)
• M12: 9,268,336 km (0.087 R)
• M13: 9,433,043 km (0.082 R)
• M14: 9,641,732 km (0.062 R)
• M15: 10,641,645 km (0.07 R)
• M16: 11,852,938 km (0.091 R)
• M17: 12,392,089 km (0.066 R)
• M18: 13,101,632 km (0.101 R)
• M19: 15,049,995 km (0.04 R)
• M20: 15,916,017 km (0.112 R)
• M21: 20,678,465 km (0.091 R)
• M22: 21,386,960 km (0.094 R)
• M23: 24,776,998 km (0.112 R)
• M24: 27,057,617 km (0.107 R)
• M25: 28,769,615 km (0.091 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 333 - 11,271 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit