🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.72

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.64 AU - 0.7 AU

Year: 360 Days

Day: 34.8 Hours

Environment

Temp: -139 °C

Axial Tilt: 10.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 122.1

Radius: 14.1

Gravity: 0.61 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.76 AU - 1.2 AU

Year: 636 Days

Day: 10.8 Hours

Environment

Temp: -155 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 78,966,129 km

• M1: 175,329 km (0.068 R)
• M2: 742,005 km (0.099 R)
• M3: 1,460,823 km (0.102 R)
• M4: 2,533,739 km (0.077 R)
• M5: 3,073,339 km (0.101 R)
• M6: 3,790,511 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.8

Radius: 8.8

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.88 AU - 1.36 AU

Year: 778 Days

Day: 7.2 Hours

Environment

Temp: -166 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 78,966,129 km

• M1: 109,506 km (0.083 R)
• M2: 422,464 km (0.112 R)
• M3: 943,514 km (0.091 R)
• M4: 1,405,023 km (0.09 R)
• M5: 1,696,440 km (0.086 R)
• M6: 2,098,409 km (0.059 R)
• M7: 2,583,256 km (0.112 R)
• M8: 2,858,367 km (0.068 R)
• M9: 3,381,211 km (0.082 R)
• M10: 5,439,977 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 779.1

Radius: 14.7

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 3.02 AU - 3.38 AU

Year: 3755 Days

Day: 7.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 78,966,129 km

• M1: 183,407 km (0.109 R)
• M2: 775,216 km (0.116 R)
• M3: 1,419,833 km (0.048 R)
• M4: 2,210,309 km (0.109 R)
• M5: 3,454,215 km (0.105 R)
• M6: 4,822,287 km (0.104 R)
• M7: 7,122,055 km (0.045 R)
• M8: 11,092,533 km (0.088 R)
• M9: 12,596,889 km (0.119 R)
• M10: 15,076,473 km (0.044 R)
• M11: 18,047,188 km (0.119 R)
• M12: 20,716,313 km (0.095 R)
• M13: 25,888,061 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 230.7

Radius: 10.3

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 4.51 AU - 4.83 AU

Year: 6620 Days

Day: 9.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 177.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 78,966,129 km

• M1: 129,103 km (0.036 R)
• M2: 494,271 km (0.059 R)
• M3: 1,304,045 km (0.062 R)
• M4: 1,929,513 km (0.115 R)
• M5: 2,304,555 km (0.075 R)
• M6: 3,354,882 km (0.109 R)
• M7: 4,275,806 km (0.072 R)
• M8: 5,383,878 km (0.112 R)
• M9: 7,983,440 km (0.038 R)
• M10: 10,508,054 km (0.112 R)
• M11: 11,192,165 km (0.085 R)
• M12: 12,134,930 km (0.092 R)
• M13: 12,554,852 km (0.086 R)
• M14: 16,611,048 km (0.067 R)
• M15: 19,562,914 km (0.076 R)
• M16: 20,929,041 km (0.116 R)
• M17: 22,847,933 km (0.05 R)
• M18: 24,068,652 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 523.8

Radius: 14.1

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 4.45 AU - 5.25 AU

Year: 7007 Days

Day: 14.1 Hours

Environment

Temp: -221 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 78,966,129 km

• M1: 175,628 km (0.113 R)
• M2: 662,868 km (0.067 R)
• M3: 1,389,315 km (0.038 R)
• M4: 1,862,045 km (0.115 R)
• M5: 2,443,831 km (0.093 R)
• M6: 2,929,725 km (0.092 R)
• M7: 3,416,067 km (0.098 R)
• M8: 4,003,837 km (0.07 R)
• M9: 4,738,961 km (0.098 R)
• M10: 6,249,451 km (0.07 R)
• M11: 7,027,659 km (0.08 R)
• M12: 8,061,231 km (0.085 R)
• M13: 8,614,893 km (0.116 R)
• M14: 10,992,751 km (0.044 R)
• M15: 12,333,148 km (0.077 R)
• M16: 12,962,805 km (0.04 R)
• M17: 13,835,709 km (0.045 R)
• M18: 14,864,044 km (0.061 R)
• M19: 17,073,156 km (0.053 R)
• M20: 19,917,760 km (0.081 R)
• M21: 21,303,186 km (0.083 R)
• M22: 24,922,407 km (0.092 R)
• M23: 26,015,219 km (0.078 R)
• M24: 26,703,519 km (0.102 R)
• M25: 30,899,291 km (0.116 R)
• M26: 34,372,504 km (0.096 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 170.5

Radius: 8

Gravity: 2.66 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 7.5 AU - 8.68 AU

Year: 15095 Days

Day: 17 Hours

Environment

Temp: -223 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 78,966,129 km

• M1: 99,483 km (0.09 R)
• M2: 397,482 km (0.087 R)
• M3: 1,168,060 km (0.086 R)
• M4: 1,445,564 km (0.119 R)
• M5: 1,825,543 km (0.118 R)
• M6: 2,169,917 km (0.096 R)
• M7: 3,116,273 km (0.09 R)
• M8: 4,870,607 km (0.074 R)
• M9: 5,859,150 km (0.065 R)
• M10: 10,868,285 km (0.068 R)
• M11: 11,170,174 km (0.109 R)
• M12: 12,379,822 km (0.061 R)
• M13: 17,132,247 km (0.06 R)
• M14: 21,682,267 km (0.102 R)
• M15: 22,081,095 km (0.117 R)
• M16: 22,484,560 km (0.061 R)
• M17: 22,810,983 km (0.113 R)
• M18: 23,306,451 km (0.088 R)
• M19: 27,625,491 km (0.102 R)
• M20: 31,524,460 km (0.075 R)
• M21: 33,392,938 km (0.043 R)
• M22: 36,108,737 km (0.081 R)
• M23: 36,444,136 km (0.112 R)
• M24: 36,894,724 km (0.063 R)
• M25: 38,037,353 km (0.05 R)
• M26: 39,203,468 km (0.065 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 884.8

Radius: 4.6

Gravity: 41.81 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 7.91 AU - 10.7 AU

Year: 18605 Days

Day: 20.4 Hours

Environment

Temp: -236 °C

Axial Tilt: 83.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 78,966,129 km

• M1: 57,296 km (0.107 R)
• M2: 207,642 km (0.112 R)
• M3: 356,791 km (0.078 R)
• M4: 540,796 km (0.084 R)
• M5: 707,598 km (0.092 R)
• M6: 897,438 km (0.09 R)
• M7: 2,766,065 km (0.082 R)
• M8: 3,677,714 km (0.076 R)
• M9: 4,920,424 km (0.103 R)
• M10: 5,145,419 km (0.116 R)
• M11: 6,157,598 km (0.114 R)
• M12: 7,889,193 km (0.095 R)
• M13: 11,672,374 km (0.068 R)
• M14: 12,901,320 km (0.104 R)
• M15: 13,329,469 km (0.027 R)
• M16: 14,289,439 km (0.098 R)
• M17: 16,017,444 km (0.03 R)
• M18: 18,681,932 km (0.103 R)
• M19: 19,600,762 km (0.11 R)
• M20: 21,727,595 km (0.099 R)
• M21: 22,743,215 km (0.091 R)
• M22: 32,423,543 km (0.103 R)
• M23: 39,556,370 km (0.055 R)
• M24: 40,307,201 km (0.082 R)
• M25: 44,044,306 km (0.081 R)
• M26: 44,688,774 km (0.116 R)
• M27: 45,013,401 km (0.102 R)
• M28: 46,660,025 km (0.05 R)
• M29: 49,204,535 km (0.07 R)
• M30: 49,724,238 km (0.11 R)
• M31: 56,818,169 km (0.068 R)
• M32: 67,498,260 km (0.102 R)
• M33: 69,435,403 km (0.036 R)
• M34: 78,258,087 km (0.084 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 347 - 13,992 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit