🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.17

Radius: 1.06

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.54 AU - 0.7 AU

Year: 310 Days

Day: 26.2 Hours

Environment

Temp: -139 °C

Axial Tilt: 19.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 58,721,703 km

• M1: 323,131 km (0.068 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 124.8

Radius: 10.2

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.63 AU - 1.03 AU

Year: 481 Days

Day: 6.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 44.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 58,721,703 km

• M1: 126,859 km (0.112 R)
• M2: 519,853 km (0.102 R)
• M3: 879,187 km (0.089 R)
• M4: 1,231,190 km (0.117 R)
• M5: 1,961,976 km (0.049 R)
• M6: 2,316,074 km (0.087 R)
• M7: 2,712,957 km (0.096 R)
• M8: 3,369,094 km (0.065 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 931.8

Radius: 13.6

Gravity: 5.04 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 1 AU - 1.34 AU

Year: 805 Days

Day: 9.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 58,721,703 km

• M1: 169,195 km (0.047 R)
• M2: 600,785 km (0.117 R)
• M3: 1,160,131 km (0.061 R)
• M4: 1,659,040 km (0.086 R)
• M5: 2,157,201 km (0.093 R)
• M6: 3,121,808 km (0.078 R)
• M7: 4,064,125 km (0.103 R)
• M8: 5,207,053 km (0.109 R)
• M9: 6,081,303 km (0.114 R)
• M10: 6,913,366 km (0.118 R)
• M11: 7,573,991 km (0.091 R)
• M12: 8,071,254 km (0.037 R)
• M13: 8,643,615 km (0.118 R)
• M14: 9,724,759 km (0.042 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.9

Radius: 15

Gravity: 0.5 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.11 AU - 1.45 AU

Year: 921 Days

Day: 10.8 Hours

Environment

Temp: -166 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 58,721,703 km

• M1: 196,123 km (0.103 R)
• M2: 791,373 km (0.117 R)
• M3: 1,791,435 km (0.106 R)
• M4: 2,368,583 km (0.119 R)
• M5: 3,307,160 km (0.075 R)
• M6: 4,122,917 km (0.12 R)
• M7: 4,734,025 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 317

Radius: 8.1

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 1.05 AU - 1.57 AU

Year: 953 Days

Day: 12.7 Hours

Environment

Temp: -170 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 58,721,703 km

• M1: 101,577 km (0.115 R)
• M2: 574,905 km (0.115 R)
• M3: 950,545 km (0.095 R)
• M4: 1,244,056 km (0.118 R)
• M5: 1,560,156 km (0.105 R)
• M6: 2,188,168 km (0.101 R)
• M7: 2,742,578 km (0.118 R)
• M8: 3,120,612 km (0.104 R)
• M9: 3,923,354 km (0.11 R)
• M10: 7,027,360 km (0.094 R)
• M11: 7,310,100 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 647.3

Radius: 14.8

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.7 AU - 2.14 AU

Year: 1692 Days

Day: 14.7 Hours

Environment

Temp: -188 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 58,721,703 km

• M1: 184,155 km (0.088 R)
• M2: 880,383 km (0.086 R)
• M3: 1,444,068 km (0.052 R)
• M4: 2,123,991 km (0.113 R)
• M5: 3,027,412 km (0.071 R)
• M6: 3,503,881 km (0.093 R)
• M7: 4,138,775 km (0.045 R)
• M8: 5,055,510 km (0.088 R)
• M9: 5,686,514 km (0.059 R)
• M10: 6,517,680 km (0.116 R)
• M11: 8,542,038 km (0.086 R)
• M12: 9,092,259 km (0.114 R)
• M13: 10,606,938 km (0.042 R)
• M14: 14,174,697 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 241.3

Radius: 11.2

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 3.36 AU - 3.42 AU

Year: 3969 Days

Day: 5.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 58,721,703 km

• M1: 141,071 km (0.091 R)
• M2: 739,313 km (0.102 R)
• M3: 1,134,849 km (0.095 R)
• M4: 1,674,150 km (0.108 R)
• M5: 2,326,396 km (0.105 R)
• M6: 2,917,458 km (0.076 R)
• M7: 3,941,605 km (0.115 R)
• M8: 5,571,324 km (0.029 R)
• M9: 8,616,987 km (0.048 R)
• M10: 10,437,892 km (0.12 R)
• M11: 12,800,043 km (0.071 R)
• M12: 13,497,617 km (0.113 R)
• M13: 16,240,494 km (0.041 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 396.2

Radius: 6.6

Gravity: 9.1 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 8.37 AU - 10.09 AU

Year: 17829 Days

Day: 22.1 Hours

Environment

Temp: -239 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 58,721,703 km

• M1: 82,129 km (0.115 R)
• M2: 429,795 km (0.094 R)
• M3: 1,328,429 km (0.098 R)
• M4: 1,932,356 km (0.028 R)
• M5: 2,306,500 km (0.111 R)
• M6: 3,249,266 km (0.1 R)
• M7: 4,094,045 km (0.102 R)
• M8: 5,354,706 km (0.077 R)
• M9: 5,678,885 km (0.116 R)
• M10: 6,016,078 km (0.105 R)
• M11: 10,941,738 km (0.098 R)
• M12: 14,329,830 km (0.088 R)
• M13: 16,037,789 km (0.114 R)
• M14: 22,060,450 km (0.091 R)
• M15: 25,019,047 km (0.087 R)
• M16: 30,218,321 km (0.106 R)
• M17: 35,967,218 km (0.109 R)
• M18: 37,771,817 km (0.026 R)
• M19: 39,097,254 km (0.045 R)
• M20: 41,281,981 km (0.113 R)
• M21: 42,546,083 km (0.066 R)
• M22: 55,951,848 km (0.114 R)
• M23: 58,195,516 km (0.071 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 215 - 17,944 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit