🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.33

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.48 AU - 0.54 AU

Year: 232 Days

Day: 13.5 Hours

Environment

Temp: -126 °C

Axial Tilt: 19.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.12

Radius: 0.43

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.56 AU - 0.72 AU

Year: 326 Days

Day: 21.8 Hours

Environment

Temp: -127 °C

Axial Tilt: 18.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 37,276,404 km

• M1: 19,597 km (0.086 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.65 AU - 0.69 AU

Year: 349 Days

Day: 22.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 37,276,404 km

• M1: 21,692 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 198.3

Radius: 12.2

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.65 AU - 0.95 AU

Year: 455 Days

Day: 11.6 Hours

Environment

Temp: -136 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 37,276,404 km

• M1: 152,141 km (0.105 R)
• M2: 540,198 km (0.095 R)
• M3: 950,545 km (0.111 R)
• M4: 1,451,698 km (0.047 R)
• M5: 2,150,469 km (0.085 R)
• M6: 2,574,131 km (0.111 R)
• M7: 3,340,969 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 501.8

Radius: 13.8

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.85 AU - 1.29 AU

Year: 704 Days

Day: 11.3 Hours

Environment

Temp: -169 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 37,276,404 km

• M1: 172,038 km (0.11 R)
• M2: 635,492 km (0.05 R)
• M3: 1,114,654 km (0.079 R)
• M4: 1,567,935 km (0.081 R)
• M5: 2,202,380 km (0.119 R)
• M6: 2,867,791 km (0.068 R)
• M7: 3,786,173 km (0.071 R)
• M8: 4,314,702 km (0.085 R)
• M9: 4,795,210 km (0.051 R)
• M10: 5,242,957 km (0.096 R)
• M11: 5,883,535 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 378.4

Radius: 10

Gravity: 3.78 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.94 AU - 1.24 AU

Year: 724 Days

Day: 8 Hours

Environment

Temp: -172 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 37,276,404 km

• M1: 125,363 km (0.052 R)
• M2: 498,161 km (0.106 R)
• M3: 811,568 km (0.111 R)
• M4: 1,128,267 km (0.1 R)
• M5: 1,691,653 km (0.091 R)
• M6: 2,008,501 km (0.082 R)
• M7: 2,433,957 km (0.112 R)
• M8: 2,764,868 km (0.094 R)
• M9: 3,281,728 km (0.093 R)
• M10: 3,821,178 km (0.101 R)
• M11: 5,094,107 km (0.092 R)
• M12: 5,569,828 km (0.114 R)
• M13: 6,130,820 km (0.118 R)
• M14: 6,729,062 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 527

Radius: 14

Gravity: 2.69 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 2.13 AU - 3.33 AU

Year: 2868 Days

Day: 8 Hours

Environment

Temp: -202 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 37,276,404 km

• M1: 177,423 km (0.112 R)
• M2: 621,579 km (0.07 R)
• M3: 1,057,208 km (0.116 R)
• M4: 1,700,030 km (0.099 R)
• M5: 2,215,395 km (0.095 R)
• M6: 2,804,810 km (0.093 R)
• M7: 3,444,790 km (0.091 R)
• M8: 4,282,837 km (0.083 R)
• M9: 5,043,243 km (0.09 R)
• M10: 6,311,085 km (0.052 R)
• M11: 7,416,614 km (0.092 R)
• M12: 8,095,190 km (0.087 R)
• M13: 9,087,023 km (0.119 R)
• M14: 10,307,443 km (0.094 R)
• M15: 11,472,511 km (0.105 R)
• M16: 13,743,257 km (0.047 R)
• M17: 14,389,969 km (0.117 R)
• M18: 15,694,761 km (0.075 R)
• M19: 16,146,697 km (0.094 R)
• M20: 17,609,016 km (0.105 R)
• M21: 18,483,415 km (0.087 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 284.9

Radius: 5.8

Gravity: 8.47 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 5.77 AU - 7.31 AU

Year: 10634 Days

Day: 16.6 Hours

Environment

Temp: -216 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 37,276,404 km

• M1: 73,602 km (0.098 R)
• M2: 352,303 km (0.058 R)
• M3: 796,309 km (0.06 R)
• M4: 988,992 km (0.048 R)
• M5: 1,694,794 km (0.097 R)
• M6: 1,987,408 km (0.07 R)
• M7: 2,692,911 km (0.108 R)
• M8: 3,177,010 km (0.037 R)
• M9: 3,439,853 km (0.101 R)
• M10: 3,934,723 km (0.098 R)
• M11: 4,557,200 km (0.095 R)
• M12: 5,865,583 km (0.1 R)
• M13: 7,406,441 km (0.078 R)
• M14: 9,553,320 km (0.06 R)
• M15: 10,289,342 km (0.079 R)
• M16: 11,013,096 km (0.109 R)
• M17: 11,261,728 km (0.087 R)
• M18: 15,026,358 km (0.068 R)
• M19: 15,956,857 km (0.045 R)
• M20: 16,598,033 km (0.066 R)
• M21: 16,991,027 km (0.09 R)
• M22: 18,207,108 km (0.075 R)
• M23: 18,836,466 km (0.11 R)
• M24: 21,345,073 km (0.071 R)
• M25: 22,439,830 km (0.066 R)
• M26: 23,244,218 km (0.091 R)
• M27: 25,512,271 km (0.117 R)
• M28: 27,557,274 km (0.108 R)
• M29: 27,831,786 km (0.056 R)
• M30: 29,327,017 km (0.065 R)
• M31: 32,578,377 km (0.087 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: 508 - 16,443 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit