🌌 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: 3.8

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.54 AU - 0.7 AU

Year: 320 Days

Day: 42.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 33.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 16,557,015 km

• M1: 180,116 km (0.063 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 591.8

Radius: 14

Gravity: 3.02 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.6 AU - 0.82 AU

Year: 392 Days

Day: 14.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 16,557,015 km

• M1: 174,132 km (0.086 R)
• M2: 644,916 km (0.116 R)
• M3: 1,088,773 km (0.108 R)
• M4: 1,721,273 km (0.107 R)
• M5: 2,333,428 km (0.113 R)
• M6: 3,152,775 km (0.108 R)
• M7: 3,731,868 km (0.063 R)
• M8: 4,783,990 km (0.073 R)
• M9: 5,256,869 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 898.3

Radius: 11.4

Gravity: 6.91 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.43 AU - 1.63 AU

Year: 1241 Days

Day: 5.3 Hours

Environment

Temp: -188 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 16,557,015 km

• M1: 141,968 km (0.081 R)
• M2: 769,831 km (0.096 R)
• M3: 1,366,427 km (0.097 R)
• M4: 2,794,339 km (0.094 R)
• M5: 3,249,715 km (0.103 R)
• M6: 3,738,002 km (0.118 R)
• M7: 5,417,836 km (0.055 R)
• M8: 6,461,282 km (0.088 R)
• M9: 8,413,983 km (0.114 R)
• M10: 8,853,352 km (0.082 R)
• M11: 9,277,312 km (0.092 R)
• M12: 9,651,456 km (0.117 R)
• M13: 10,429,964 km (0.095 R)
• M14: 11,075,628 km (0.094 R)
• M15: 11,461,441 km (0.072 R)
• M16: 12,002,088 km (0.062 R)
• M17: 12,446,842 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.5

Radius: 9.4

Gravity: 3.99 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.66 AU - 2.32 AU

Year: 1842 Days

Day: 13.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 16,557,015 km

• M1: 127,158 km (0.089 R)
• M2: 442,810 km (0.115 R)
• M3: 814,261 km (0.077 R)
• M4: 1,619,846 km (0.104 R)
• M5: 2,188,467 km (0.111 R)
• M6: 3,514,952 km (0.108 R)
• M7: 4,469,386 km (0.089 R)
• M8: 5,502,210 km (0.038 R)
• M9: 6,399,199 km (0.116 R)
• M10: 6,882,848 km (0.116 R)
• M11: 7,680,654 km (0.11 R)
• M12: 12,067,312 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 512

Radius: 11

Gravity: 4.23 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 2.81 AU - 4.43 AU

Year: 4518 Days

Day: 14.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 16,557,015 km

• M1: 138,827 km (0.1 R)
• M2: 502,350 km (0.097 R)
• M3: 845,527 km (0.081 R)
• M4: 1,659,788 km (0.08 R)
• M5: 2,162,437 km (0.111 R)
• M6: 2,505,166 km (0.109 R)
• M7: 2,972,061 km (0.102 R)
• M8: 3,994,562 km (0.045 R)
• M9: 4,780,849 km (0.093 R)
• M10: 5,862,890 km (0.104 R)
• M11: 7,069,098 km (0.115 R)
• M12: 8,325,570 km (0.069 R)
• M13: 8,689,542 km (0.055 R)
• M14: 9,140,280 km (0.069 R)
• M15: 9,527,739 km (0.091 R)
• M16: 9,966,509 km (0.08 R)
• M17: 10,713,900 km (0.093 R)
• M18: 11,057,826 km (0.07 R)
• M19: 13,034,911 km (0.091 R)
• M20: 13,526,490 km (0.08 R)
• M21: 14,599,256 km (0.12 R)
• M22: 14,969,062 km (0.085 R)
• M23: 16,004,878 km (0.089 R)
• M24: 16,625,859 km (0.068 R)
• M25: 18,279,513 km (0.044 R)
• M26: 18,709,607 km (0.112 R)
• M27: 19,462,384 km (0.045 R)
• M28: 19,910,878 km (0.091 R)
• M29: 21,705,454 km (0.117 R)
• M30: 22,960,132 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627.8

Radius: 10.1

Gravity: 6.15 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 3.24 AU - 4.54 AU

Year: 5033 Days

Day: 12.4 Hours

Environment

Temp: -209 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 16,557,015 km

• M1: 125,812 km (0.114 R)
• M2: 521,049 km (0.084 R)
• M3: 878,738 km (0.083 R)
• M4: 1,268,440 km (0.114 R)
• M5: 1,760,767 km (0.106 R)
• M6: 2,607,491 km (0.116 R)
• M7: 5,167,559 km (0.119 R)
• M8: 5,673,350 km (0.094 R)
• M9: 6,119,750 km (0.081 R)
• M10: 7,960,551 km (0.061 R)
• M11: 9,678,683 km (0.106 R)
• M12: 10,983,625 km (0.088 R)
• M13: 13,727,549 km (0.037 R)
• M14: 14,533,732 km (0.117 R)
• M15: 15,144,840 km (0.092 R)
• M16: 15,485,324 km (0.106 R)
• M17: 16,717,412 km (0.092 R)
• M18: 17,574,459 km (0.103 R)
• M19: 18,589,331 km (0.113 R)
• M20: 20,252,859 km (0.077 R)
• M21: 21,155,981 km (0.061 R)
• M22: 22,085,732 km (0.064 R)
• M23: 25,755,817 km (0.085 R)
• M24: 27,064,200 km (0.098 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 64.4

Radius: 12.1

Gravity: 0.44 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 4.05 AU - 5.39 AU

Year: 6727 Days

Day: 13.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 16,557,015 km

• M1: 165,605 km (0.093 R)
• M2: 593,754 km (0.025 R)
• M3: 1,141,731 km (0.073 R)
• M4: 1,839,455 km (0.102 R)
• M5: 2,402,392 km (0.096 R)
• M6: 3,453,317 km (0.111 R)
• M7: 4,160,317 km (0.077 R)
• M8: 6,495,988 km (0.032 R)
• M9: 7,034,989 km (0.046 R)
• M10: 10,049,536 km (0.067 R)
• M11: 11,183,638 km (0.104 R)
• M12: 14,189,358 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 27

Radius: 6.5

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 4.97 AU - 7.51 AU

Year: 10226 Days

Day: 19.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 16,557,015 km

• M1: 149,598 km (0.046 R)
• M2: 1,233,135 km (0.09 R)
• M3: 1,532,780 km (0.088 R)
• M4: 6,002,764 km (0.059 R)
• M5: 10,670,667 km (0.052 R)
• M6: 12,333,746 km (0.104 R)
• M7: 13,078,743 km (0.087 R)
• M8: 15,588,098 km (0.047 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: 385 - 20,205 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit