🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.4

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.53 AU - 0.67 AU

Year: 305 Days

Day: 33.1 Hours

Environment

Temp: -126 °C

Axial Tilt: 32.6 °

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: 364.2

Radius: 10.9

Gravity: 3.07 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.7 AU - 0.76 AU

Year: 409 Days

Day: 11.1 Hours

Environment

Temp: -151 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,495,559 km

• M1: 135,536 km (0.086 R)
• M2: 557,102 km (0.092 R)
• M3: 1,064,090 km (0.098 R)
• M4: 1,410,558 km (0.106 R)
• M5: 1,956,441 km (0.101 R)
• M6: 2,325,349 km (0.114 R)
• M7: 2,676,007 km (0.081 R)
• M8: 3,322,569 km (0.065 R)
• M9: 3,712,122 km (0.088 R)
• M10: 4,334,748 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.1

Radius: 9.7

Gravity: 9.62 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 1.56 AU - 2.08 AU

Year: 1611 Days

Day: 9.3 Hours

Environment

Temp: -190 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 56,495,559 km

• M1: 120,576 km (0.071 R)
• M2: 428,149 km (0.095 R)
• M3: 800,199 km (0.093 R)
• M4: 1,349,074 km (0.112 R)
• M5: 1,916,199 km (0.095 R)
• M6: 2,951,865 km (0.12 R)
• M7: 3,575,988 km (0.111 R)
• M8: 4,020,892 km (0.034 R)
• M9: 4,383,218 km (0.066 R)
• M10: 5,420,080 km (0.075 R)
• M11: 5,744,409 km (0.06 R)
• M12: 6,057,218 km (0.088 R)
• M13: 8,001,541 km (0.092 R)
• M14: 8,484,593 km (0.12 R)
• M15: 9,913,552 km (0.068 R)
• M16: 11,421,498 km (0.118 R)
• M17: 11,995,356 km (0.052 R)
• M18: 13,117,938 km (0.092 R)
• M19: 13,619,839 km (0.07 R)
• M20: 14,134,605 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 623.9

Radius: 9.9

Gravity: 6.37 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.92 AU - 2.2 AU

Year: 1940 Days

Day: 6.2 Hours

Environment

Temp: -188 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 56,495,559 km

• M1: 123,119 km (0.083 R)
• M2: 437,424 km (0.094 R)
• M3: 874,250 km (0.109 R)
• M4: 1,325,587 km (0.109 R)
• M5: 1,696,141 km (0.112 R)
• M6: 2,196,097 km (0.033 R)
• M7: 2,706,824 km (0.09 R)
• M8: 3,199,450 km (0.106 R)
• M9: 4,563,633 km (0.101 R)
• M10: 5,936,343 km (0.091 R)
• M11: 6,484,021 km (0.119 R)
• M12: 7,854,636 km (0.075 R)
• M13: 8,546,078 km (0.108 R)
• M14: 9,442,169 km (0.087 R)
• M15: 10,189,111 km (0.113 R)
• M16: 11,233,454 km (0.101 R)
• M17: 12,228,878 km (0.042 R)
• M18: 13,575,857 km (0.046 R)
• M19: 14,002,959 km (0.117 R)
• M20: 14,838,912 km (0.08 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 308.4

Radius: 9.6

Gravity: 3.35 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.9 AU - 2.66 AU

Year: 2258 Days

Day: 8.4 Hours

Environment

Temp: -190 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 56,495,559 km

• M1: 119,379 km (0.103 R)
• M2: 432,039 km (0.112 R)
• M3: 820,245 km (0.057 R)
• M4: 1,530,536 km (0.095 R)
• M5: 2,129,974 km (0.073 R)
• M6: 2,740,783 km (0.109 R)
• M7: 4,291,215 km (0.064 R)
• M8: 4,653,092 km (0.099 R)
• M9: 5,416,341 km (0.07 R)
• M10: 5,839,553 km (0.098 R)
• M11: 7,164,392 km (0.076 R)
• M12: 10,533,036 km (0.096 R)
• M13: 11,698,254 km (0.111 R)
• M14: 12,483,194 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 552

Radius: 10.3

Gravity: 5.2 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 3.1 AU - 3.5 AU

Year: 3933 Days

Day: 6.6 Hours

Environment

Temp: -203 °C

Axial Tilt: 43 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 56,495,559 km

• M1: 128,205 km (0.085 R)
• M2: 777,460 km (0.095 R)
• M3: 1,663,678 km (0.092 R)
• M4: 2,184,428 km (0.092 R)
• M5: 2,728,964 km (0.084 R)
• M6: 3,613,686 km (0.087 R)
• M7: 3,940,857 km (0.06 R)
• M8: 4,561,538 km (0.104 R)
• M9: 5,119,239 km (0.092 R)
• M10: 6,139,646 km (0.113 R)
• M11: 6,488,658 km (0.087 R)
• M12: 7,517,443 km (0.097 R)
• M13: 9,392,353 km (0.085 R)
• M14: 12,784,036 km (0.106 R)
• M15: 13,843,488 km (0.118 R)
• M16: 17,488,739 km (0.074 R)
• M17: 18,854,119 km (0.027 R)
• M18: 20,353,090 km (0.084 R)
• M19: 20,870,100 km (0.048 R)
• M20: 23,445,876 km (0.044 R)
• M21: 23,942,541 km (0.11 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 631.7

Radius: 11.2

Gravity: 5.04 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 3.69 AU - 5.21 AU

Year: 6158 Days

Day: 6.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 56,495,559 km

• M1: 139,425 km (0.108 R)
• M2: 512,223 km (0.09 R)
• M3: 885,470 km (0.074 R)
• M4: 1,326,036 km (0.051 R)
• M5: 2,118,904 km (0.115 R)
• M6: 2,491,253 km (0.052 R)
• M7: 3,123,005 km (0.119 R)
• M8: 3,858,578 km (0.117 R)
• M9: 4,293,010 km (0.094 R)
• M10: 4,950,493 km (0.114 R)
• M11: 5,405,719 km (0.079 R)
• M12: 6,173,007 km (0.046 R)
• M13: 6,837,819 km (0.098 R)
• M14: 9,080,142 km (0.079 R)
• M15: 11,091,635 km (0.071 R)
• M16: 11,724,434 km (0.098 R)
• M17: 12,535,853 km (0.104 R)
• M18: 14,498,427 km (0.077 R)
• M19: 16,408,044 km (0.091 R)
• M20: 16,910,543 km (0.102 R)
• M21: 18,547,144 km (0.073 R)
• M22: 19,718,944 km (0.107 R)
• M23: 20,793,206 km (0.119 R)
• M24: 24,984,939 km (0.111 R)
• M25: 27,983,927 km (0.07 R)
• M26: 29,339,733 km (0.092 R)
• M27: 32,476,052 km (0.063 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 549.2

Radius: 4.7

Gravity: 24.86 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 6.38 AU - 9.22 AU

Year: 14291 Days

Day: 22 Hours

Environment

Temp: -231 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 56,495,559 km

• M1: 59,091 km (0.043 R)
• M2: 307,424 km (0.053 R)
• M3: 509,979 km (0.097 R)
• M4: 994,227 km (0.081 R)
• M5: 1,507,348 km (0.113 R)
• M6: 2,396,109 km (0.119 R)
• M7: 3,643,456 km (0.08 R)
• M8: 4,421,515 km (0.106 R)
• M9: 5,480,518 km (0.11 R)
• M10: 7,857,479 km (0.064 R)
• M11: 9,706,658 km (0.101 R)
• M12: 12,494,265 km (0.092 R)
• M13: 13,903,327 km (0.098 R)
• M14: 16,805,675 km (0.032 R)
• M15: 17,032,615 km (0.085 R)
• M16: 22,103,833 km (0.078 R)
• M17: 24,154,671 km (0.097 R)
• M18: 24,930,934 km (0.066 R)
• M19: 27,047,295 km (0.072 R)
• M20: 28,738,050 km (0.119 R)
• M21: 30,497,920 km (0.029 R)
• M22: 31,518,925 km (0.08 R)
• M23: 36,839,373 km (0.118 R)
• M24: 39,443,872 km (0.096 R)
• M25: 45,600,573 km (0.082 R)
• M26: 46,338,389 km (0.032 R)
• M27: 48,293,633 km (0.111 R)
• M28: 51,090,665 km (0.119 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 504 - 19,024 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit