🌌 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: 1.5

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.39 AU - 0.63 AU

Year: 239 Days

Day: 47.7 Hours

Environment

Temp: -118 °C

Axial Tilt: 24.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 988.4

Radius: 9.8

Gravity: 10.29 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.72 AU - 0.74 AU

Year: 409 Days

Day: 6.7 Hours

Environment

Temp: -150 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 35,463,991 km

• M1: 123,418 km (0.106 R)
• M2: 444,006 km (0.067 R)
• M3: 939,325 km (0.047 R)
• M4: 1,411,157 km (0.083 R)
• M5: 1,838,707 km (0.116 R)
• M6: 2,258,329 km (0.097 R)
• M7: 2,815,731 km (0.102 R)
• M8: 3,401,108 km (0.081 R)
• M9: 3,834,941 km (0.047 R)
• M10: 4,233,919 km (0.058 R)
• M11: 5,003,151 km (0.089 R)
• M12: 5,446,559 km (0.095 R)
• M13: 5,934,099 km (0.03 R)
• M14: 6,337,265 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 512

Radius: 13.3

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.85 AU - 0.95 AU

Year: 560 Days

Day: 7.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 35,463,991 km

• M1: 165,455 km (0.097 R)
• M2: 628,161 km (0.093 R)
• M3: 1,158,486 km (0.106 R)
• M4: 1,860,998 km (0.083 R)
• M5: 2,274,785 km (0.069 R)
• M6: 2,866,744 km (0.078 R)
• M7: 3,473,962 km (0.11 R)
• M8: 3,894,481 km (0.079 R)
• M9: 4,552,862 km (0.096 R)
• M10: 6,275,481 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 172.2

Radius: 13.9

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.8 AU - 1.04 AU

Year: 579 Days

Day: 14.8 Hours

Environment

Temp: -162 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 35,463,991 km

• M1: 172,935 km (0.096 R)
• M2: 630,705 km (0.094 R)
• M3: 1,210,546 km (0.055 R)
• M4: 1,791,285 km (0.118 R)
• M5: 3,020,381 km (0.101 R)
• M6: 3,989,177 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 536.3

Radius: 10.7

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.98 AU - 1.14 AU

Year: 716 Days

Day: 11.8 Hours

Environment

Temp: -165 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,463,991 km

• M1: 134,189 km (0.035 R)
• M2: 493,972 km (0.109 R)
• M3: 905,067 km (0.082 R)
• M4: 1,351,168 km (0.034 R)
• M5: 1,865,485 km (0.056 R)
• M6: 2,363,796 km (0.117 R)
• M7: 2,914,765 km (0.111 R)
• M8: 3,418,311 km (0.053 R)
• M9: 4,274,610 km (0.079 R)
• M10: 5,095,303 km (0.062 R)
• M11: 5,588,827 km (0.114 R)
• M12: 6,879,258 km (0.108 R)
• M13: 7,460,895 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 726.7

Radius: 13.4

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 1.61 AU - 1.95 AU

Year: 1558 Days

Day: 6.3 Hours

Environment

Temp: -187 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,463,991 km

• M1: 167,250 km (0.108 R)
• M2: 673,938 km (0.119 R)
• M3: 1,188,256 km (0.03 R)
• M4: 1,852,919 km (0.09 R)
• M5: 2,649,528 km (0.096 R)
• M6: 3,468,127 km (0.081 R)
• M7: 3,919,913 km (0.1 R)
• M8: 4,526,084 km (0.117 R)
• M9: 5,387,468 km (0.075 R)
• M10: 10,534,383 km (0.118 R)
• M11: 11,272,948 km (0.117 R)
• M12: 12,541,837 km (0.067 R)
• M13: 13,533,970 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 483.9

Radius: 14.2

Gravity: 2.4 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 2.05 AU - 3.31 AU

Year: 2878 Days

Day: 8.6 Hours

Environment

Temp: -195 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 35,463,991 km

• M1: 176,675 km (0.073 R)
• M2: 720,463 km (0.056 R)
• M3: 1,180,028 km (0.105 R)
• M4: 1,621,791 km (0.11 R)
• M5: 3,047,009 km (0.057 R)
• M6: 3,699,107 km (0.079 R)
• M7: 4,655,187 km (0.09 R)
• M8: 5,451,795 km (0.079 R)
• M9: 5,921,383 km (0.06 R)
• M10: 6,526,207 km (0.093 R)
• M11: 7,171,872 km (0.097 R)
• M12: 8,268,125 km (0.092 R)
• M13: 9,333,860 km (0.12 R)
• M14: 10,377,006 km (0.073 R)
• M15: 11,416,861 km (0.079 R)
• M16: 13,391,253 km (0.08 R)
• M17: 14,112,764 km (0.102 R)
• M18: 15,003,021 km (0.063 R)
• M19: 15,831,045 km (0.116 R)
• M20: 16,586,814 km (0.084 R)
• M21: 18,061,849 km (0.073 R)
• M22: 18,609,227 km (0.115 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 467.8

Radius: 14.3

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 2.94 AU - 3.26 AU

Year: 3581 Days

Day: 8.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 166.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,463,991 km

• M1: 179,368 km (0.08 R)
• M2: 812,765 km (0.096 R)
• M3: 1,282,054 km (0.103 R)
• M4: 2,139,848 km (0.053 R)
• M5: 3,027,263 km (0.044 R)
• M6: 4,045,575 km (0.067 R)
• M7: 4,601,481 km (0.084 R)
• M8: 6,726,967 km (0.032 R)
• M9: 7,171,872 km (0.12 R)
• M10: 9,479,718 km (0.105 R)
• M11: 11,229,265 km (0.109 R)
• M12: 20,410,086 km (0.108 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 62.4

Radius: 11.4

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 3.5 AU - 5.36 AU

Year: 6117 Days

Day: 6.6 Hours

Environment

Temp: -213 °C

Axial Tilt: 43.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 35,463,991 km

• M1: 154,086 km (0.103 R)
• M2: 1,134,700 km (0.032 R)
• M3: 1,720,226 km (0.09 R)
• M4: 2,184,428 km (0.075 R)
• M5: 3,706,287 km (0.084 R)
• M6: 4,084,620 km (0.078 R)
• M7: 8,978,565 km (0.08 R)
• M8: 11,631,683 km (0.105 R)
• M9: 13,302,841 km (0.063 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 172

Radius: 6.9

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 6.86 AU - 7.56 AU

Year: 12700 Days

Day: 15 Hours

Environment

Temp: -226 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 35,463,991 km

• M1: 86,168 km (0.049 R)
• M2: 418,126 km (0.081 R)
• M3: 975,677 km (0.106 R)
• M4: 1,551,180 km (0.096 R)
• M5: 1,877,752 km (0.043 R)
• M6: 3,038,183 km (0.1 R)
• M7: 4,561,389 km (0.086 R)
• M8: 5,594,960 km (0.106 R)
• M9: 6,952,860 km (0.088 R)
• M10: 7,463,139 km (0.026 R)
• M11: 8,558,345 km (0.032 R)
• M12: 8,974,227 km (0.069 R)
• M13: 10,536,776 km (0.102 R)
• M14: 11,063,211 km (0.049 R)
• M15: 13,345,776 km (0.112 R)
• M16: 13,735,777 km (0.111 R)
• M17: 14,480,027 km (0.098 R)
• M18: 15,070,789 km (0.087 R)
• M19: 17,134,192 km (0.051 R)
• M20: 17,528,682 km (0.058 R)
• M21: 18,679,089 km (0.114 R)
• M22: 19,592,235 km (0.114 R)
• M23: 19,951,270 km (0.111 R)
• M24: 23,222,077 km (0.107 R)
• M25: 25,279,347 km (0.108 R)
• M26: 29,941,715 km (0.079 R)
• M27: 32,075,878 km (0.118 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 484 - 15,798 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit