🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.61 AU - 0.65 AU

Year: 328 Days

Day: 36.3 Hours

Environment

Temp: -123 °C

Axial Tilt: 12.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 727.7

Radius: 13.5

Gravity: 3.99 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.6 AU - 0.9 AU

Year: 426 Days

Day: 12.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 43,929,179 km

• M1: 167,849 km (0.114 R)
• M2: 622,477 km (0.086 R)
• M3: 1,645,577 km (0.07 R)
• M4: 2,199,687 km (0.056 R)
• M5: 2,673,314 km (0.081 R)
• M6: 3,260,934 km (0.093 R)
• M7: 3,843,319 km (0.119 R)
• M8: 4,311,111 km (0.084 R)
• M9: 5,362,485 km (0.06 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 20.7

Radius: 11.6

Gravity: 0.15 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 1.43 AU - 1.81 AU

Year: 1353 Days

Day: 14.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (2)

Outer Limit: 43,929,179 km

• M1: 144,212 km (0.059 R)
• M2: 555,606 km (0.059 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.4

Radius: 12.2

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 1.67 AU - 1.89 AU

Year: 1558 Days

Day: 5.2 Hours

Environment

Temp: -186 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 43,929,179 km

• M1: 151,842 km (0.072 R)
• M2: 582,534 km (0.069 R)
• M3: 1,050,327 km (0.119 R)
• M4: 1,594,115 km (0.103 R)
• M5: 2,010,895 km (0.053 R)
• M6: 2,522,818 km (0.105 R)
• M7: 3,301,027 km (0.084 R)
• M8: 3,754,159 km (0.109 R)
• M9: 4,586,222 km (0.087 R)
• M10: 5,206,455 km (0.071 R)
• M11: 5,688,758 km (0.069 R)
• M12: 6,786,507 km (0.107 R)
• M13: 8,141,864 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 93.4

Radius: 8.1

Gravity: 1.42 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 3.19 AU - 3.95 AU

Year: 4425 Days

Day: 12.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 25.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 43,929,179 km

• M1: 105,167 km (0.102 R)
• M2: 541,095 km (0.086 R)
• M3: 997,519 km (0.101 R)
• M4: 1,296,116 km (0.11 R)
• M5: 1,596,658 km (0.098 R)
• M6: 2,159,146 km (0.054 R)
• M7: 2,948,724 km (0.111 R)
• M8: 3,829,855 km (0.115 R)
• M9: 4,284,184 km (0.078 R)
• M10: 4,573,656 km (0.098 R)
• M11: 7,194,610 km (0.104 R)
• M12: 8,146,651 km (0.057 R)
• M13: 8,775,411 km (0.051 R)
• M14: 10,061,654 km (0.052 R)
• M15: 11,579,922 km (0.102 R)
• M16: 12,647,154 km (0.083 R)
• M17: 13,366,869 km (0.115 R)
• M18: 14,113,811 km (0.05 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 856.3

Radius: 14.5

Gravity: 4.07 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 4.01 AU - 4.29 AU

Year: 5546 Days

Day: 10.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 43,929,179 km

• M1: 180,415 km (0.099 R)
• M2: 983,008 km (0.088 R)
• M3: 2,767,710 km (0.087 R)
• M4: 3,298,184 km (0.1 R)
• M5: 3,896,426 km (0.089 R)
• M6: 5,519,862 km (0.095 R)
• M7: 6,368,232 km (0.089 R)
• M8: 6,876,117 km (0.112 R)
• M9: 9,571,571 km (0.046 R)
• M10: 12,434,126 km (0.111 R)
• M11: 13,394,096 km (0.095 R)
• M12: 16,072,197 km (0.104 R)
• M13: 18,539,814 km (0.053 R)
• M14: 19,368,885 km (0.112 R)
• M15: 21,027,178 km (0.114 R)
• M16: 31,631,722 km (0.095 R)
• M17: 34,751,137 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 856.9

Radius: 14.6

Gravity: 4.02 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 4.36 AU - 6.62 AU

Year: 8439 Days

Day: 8 Hours

Environment

Temp: -213 °C

Axial Tilt: 165.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 43,929,179 km

• M1: 181,612 km (0.111 R)
• M2: 638,185 km (0.092 R)
• M3: 2,185,176 km (0.051 R)
• M4: 5,753,385 km (0.037 R)
• M5: 7,618,122 km (0.099 R)
• M6: 10,660,195 km (0.076 R)
• M7: 14,309,934 km (0.1 R)
• M8: 15,076,922 km (0.093 R)
• M9: 16,415,973 km (0.083 R)
• M10: 16,973,374 km (0.102 R)
• M11: 18,948,365 km (0.059 R)
• M12: 21,482,703 km (0.083 R)
• M13: 25,696,426 km (0.111 R)
• M14: 34,799,606 km (0.047 R)
• M15: 36,539,878 km (0.11 R)
• M16: 43,551,231 km (0.08 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 469.6

Radius: 3.8

Gravity: 32.52 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 5.76 AU - 7.02 AU

Year: 10596 Days

Day: 22.1 Hours

Environment

Temp: -232 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 43,929,179 km

• M1: 52,808 km (0.042 R)
• M2: 217,067 km (0.058 R)
• M3: 676,930 km (0.067 R)
• M4: 930,349 km (0.103 R)
• M5: 1,329,476 km (0.099 R)
• M6: 1,609,972 km (0.104 R)
• M7: 1,787,246 km (0.104 R)
• M8: 3,229,220 km (0.049 R)
• M9: 4,900,228 km (0.1 R)
• M10: 5,834,018 km (0.096 R)
• M11: 8,003,935 km (0.09 R)
• M12: 13,423,417 km (0.109 R)
• M13: 38,629,013 km (0.09 R)
• M14: 40,097,166 km (0.075 R)
• M15: 40,970,369 km (0.102 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 344 - 12,915 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit