🌌 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: 3.9

Radius: 1.72

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.48 AU - 0.76 AU

Year: 320 Days

Day: 14.4 Hours

Environment

Temp: -133 °C

Axial Tilt: 5.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 32,120,901 km

• M1: 78,838 km (0.074 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.81

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.62 AU - 0.62 AU

Year: 320 Days

Day: 46.1 Hours

Environment

Temp: -122 °C

Axial Tilt: 46 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 32,120,901 km

• M1: 330,910 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 250.8

Radius: 9.3

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.7 AU - 0.92 AU

Year: 478 Days

Day: 14.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 32,120,901 km

• M1: 116,238 km (0.111 R)
• M2: 428,000 km (0.081 R)
• M3: 876,344 km (0.109 R)
• M4: 1,375,552 km (0.116 R)
• M5: 1,863,690 km (0.114 R)
• M6: 2,277,927 km (0.084 R)
• M7: 2,687,825 km (0.09 R)
• M8: 3,054,789 km (0.113 R)
• M9: 3,577,334 km (0.118 R)
• M10: 3,901,961 km (0.084 R)
• M11: 4,517,856 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 507.5

Radius: 8.4

Gravity: 7.19 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.66 AU - 1.04 AU

Year: 514 Days

Day: 12.6 Hours

Environment

Temp: -152 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 32,120,901 km

• M1: 104,419 km (0.101 R)
• M2: 890,706 km (0.09 R)
• M3: 1,556,865 km (0.094 R)
• M4: 1,990,100 km (0.104 R)
• M5: 2,492,151 km (0.109 R)
• M6: 3,020,531 km (0.089 R)
• M7: 5,735,433 km (0.029 R)
• M8: 5,996,631 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 255.7

Radius: 9.7

Gravity: 2.72 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.98 AU - 1.24 AU

Year: 767 Days

Day: 14.7 Hours

Environment

Temp: -167 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 32,120,901 km

• M1: 121,174 km (0.046 R)
• M2: 430,094 km (0.073 R)
• M3: 767,287 km (0.087 R)
• M4: 1,137,243 km (0.093 R)
• M5: 1,612,515 km (0.088 R)
• M6: 1,958,535 km (0.074 R)
• M7: 2,458,940 km (0.059 R)
• M8: 2,771,450 km (0.097 R)
• M9: 3,121,958 km (0.118 R)
• M10: 4,545,681 km (0.081 R)
• M11: 4,925,659 km (0.098 R)
• M12: 5,594,811 km (0.101 R)
• M13: 5,907,171 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 346.7

Radius: 8.4

Gravity: 4.91 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 1.2 AU - 1.4 AU

Year: 972 Days

Day: 12.9 Hours

Environment

Temp: -178 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 32,120,901 km

• M1: 104,719 km (0.106 R)
• M2: 584,778 km (0.073 R)
• M3: 975,229 km (0.086 R)
• M4: 1,527,245 km (0.091 R)
• M5: 1,809,386 km (0.097 R)
• M6: 2,578,319 km (0.093 R)
• M7: 2,994,351 km (0.069 R)
• M8: 3,441,200 km (0.117 R)
• M9: 3,946,541 km (0.078 R)
• M10: 5,193,440 km (0.112 R)
• M11: 5,801,256 km (0.093 R)
• M12: 7,911,184 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 426.5

Radius: 13.6

Gravity: 2.31 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.83 AU - 2.89 AU

Year: 2378 Days

Day: 11.4 Hours

Environment

Temp: -191 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 32,120,901 km

• M1: 170,841 km (0.104 R)
• M2: 623,225 km (0.078 R)
• M3: 1,345,483 km (0.086 R)
• M4: 2,267,455 km (0.079 R)
• M5: 2,811,842 km (0.106 R)
• M6: 3,492,961 km (0.108 R)
• M7: 4,092,699 km (0.102 R)
• M8: 5,364,430 km (0.101 R)
• M9: 7,046,060 km (0.112 R)
• M10: 7,890,689 km (0.042 R)
• M11: 9,381,432 km (0.114 R)
• M12: 12,193,274 km (0.111 R)
• M13: 13,495,074 km (0.094 R)
• M14: 15,113,574 km (0.101 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 342.5

Radius: 11.3

Gravity: 2.68 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 3.04 AU - 3.62 AU

Year: 3986 Days

Day: 14 Hours

Environment

Temp: -201 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 32,120,901 km

• M1: 140,622 km (0.074 R)
• M2: 676,631 km (0.113 R)
• M3: 1,228,498 km (0.101 R)
• M4: 1,646,025 km (0.078 R)
• M5: 2,030,492 km (0.087 R)
• M6: 2,652,969 km (0.086 R)
• M7: 3,222,039 km (0.088 R)
• M8: 4,408,350 km (0.101 R)
• M9: 5,282,450 km (0.08 R)
• M10: 5,839,254 km (0.084 R)
• M11: 6,547,450 km (0.082 R)
• M12: 6,981,433 km (0.082 R)
• M13: 8,102,221 km (0.101 R)
• M14: 9,520,408 km (0.112 R)
• M15: 10,078,558 km (0.119 R)
• M16: 13,992,786 km (0.092 R)
• M17: 15,010,650 km (0.053 R)
• M18: 16,077,283 km (0.118 R)
• M19: 17,577,002 km (0.067 R)
• M20: 17,966,255 km (0.099 R)
• M21: 18,532,035 km (0.119 R)
• M22: 18,935,201 km (0.09 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 99.4

Radius: 7.4

Gravity: 1.82 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 6.31 AU - 9.37 AU

Year: 14401 Days

Day: 22 Hours

Environment

Temp: -220 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 32,120,901 km

• M1: 92,003 km (0.119 R)
• M2: 948,151 km (0.095 R)
• M3: 1,201,720 km (0.09 R)
• M4: 1,537,118 km (0.119 R)
• M5: 1,835,715 km (0.06 R)
• M6: 2,603,153 km (0.079 R)
• M7: 3,590,050 km (0.097 R)
• M8: 3,953,273 km (0.098 R)
• M9: 4,779,802 km (0.101 R)
• M10: 5,656,744 km (0.104 R)
• M11: 6,054,824 km (0.114 R)
• M12: 8,100,725 km (0.053 R)
• M13: 12,757,706 km (0.078 R)
• M14: 14,319,059 km (0.067 R)
• M15: 17,366,966 km (0.098 R)
• M16: 17,816,358 km (0.118 R)
• M17: 20,606,658 km (0.1 R)
• M18: 30,145,168 km (0.112 R)
• M19: 31,358,406 km (0.097 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 397 - 14,997 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit