🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.46

Radius: 0.73

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.47 AU - 0.69 AU

Year: 285 Days

Day: 14 Hours

Environment

Temp: -128 °C

Axial Tilt: 46.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291.9

Radius: 10.6

Gravity: 2.6 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.89 AU - 0.93 AU

Year: 561 Days

Day: 9.7 Hours

Environment

Temp: -158 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 80,687,442 km

• M1: 134,488 km (0.12 R)
• M2: 484,248 km (0.069 R)
• M3: 843,582 km (0.035 R)
• M4: 1,227,899 km (0.084 R)
• M5: 1,592,619 km (0.12 R)
• M6: 2,227,662 km (0.106 R)
• M7: 3,195,710 km (0.067 R)
• M8: 3,666,045 km (0.096 R)
• M9: 4,064,873 km (0.11 R)
• M10: 4,520,399 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 926.9

Radius: 10.1

Gravity: 9.09 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.36 AU - 1.96 AU

Year: 1381 Days

Day: 12.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 80,687,442 km

• M1: 125,662 km (0.072 R)
• M2: 475,123 km (0.079 R)
• M3: 926,759 km (0.086 R)
• M4: 1,281,156 km (0.07 R)
• M5: 1,767,200 km (0.07 R)
• M6: 2,099,606 km (0.053 R)
• M7: 2,822,463 km (0.058 R)
• M8: 3,487,725 km (0.065 R)
• M9: 6,167,471 km (0.11 R)
• M10: 6,509,901 km (0.115 R)
• M11: 7,047,256 km (0.11 R)
• M12: 7,614,083 km (0.084 R)
• M13: 9,370,212 km (0.045 R)
• M14: 9,856,705 km (0.095 R)
• M15: 10,496,983 km (0.117 R)
• M16: 10,950,863 km (0.097 R)
• M17: 13,017,857 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 22.1

Radius: 8.9

Gravity: 0.28 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 2.16 AU - 3.54 AU

Year: 3107 Days

Day: 11 Hours

Environment

Temp: -196 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 80,687,442 km

• M1: 110,702 km (0.059 R)
• M2: 701,464 km (0.062 R)
• M3: 1,124,677 km (0.061 R)
• M4: 1,606,083 km (0.106 R)
• M5: 3,194,663 km (0.08 R)
• M6: 4,538,201 km (0.069 R)
• M7: 5,405,121 km (0.11 R)
• M8: 5,687,412 km (0.11 R)
• M9: 6,495,540 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 192.5

Radius: 11.8

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 4.09 AU - 5.65 AU

Year: 6939 Days

Day: 12 Hours

Environment

Temp: -207 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 80,687,442 km

• M1: 149,598 km (0.072 R)
• M2: 596,896 km (0.063 R)
• M3: 1,108,221 km (0.026 R)
• M4: 1,531,882 km (0.097 R)
• M5: 2,316,972 km (0.066 R)
• M6: 3,913,630 km (0.082 R)
• M7: 4,306,025 km (0.059 R)
• M8: 5,196,282 km (0.113 R)
• M9: 5,617,550 km (0.098 R)
• M10: 6,351,178 km (0.114 R)
• M11: 6,864,597 km (0.086 R)
• M12: 10,590,931 km (0.106 R)
• M13: 12,437,866 km (0.041 R)
• M14: 13,098,640 km (0.116 R)
• M15: 15,169,374 km (0.088 R)
• M16: 17,160,073 km (0.118 R)
• M17: 18,398,743 km (0.105 R)
• M18: 20,790,214 km (0.036 R)
• M19: 21,788,930 km (0.095 R)
• M20: 23,954,060 km (0.054 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 95.4

Radius: 5.9

Gravity: 2.74 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 5.81 AU - 9.35 AU

Year: 13475 Days

Day: 18 Hours

Environment

Temp: -223 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 80,687,442 km

• M1: 75,846 km (0.092 R)
• M2: 330,013 km (0.094 R)
• M3: 788,231 km (0.117 R)
• M4: 2,281,816 km (0.062 R)
• M5: 2,828,746 km (0.1 R)
• M6: 15,152,170 km (0.117 R)
• M7: 16,745,387 km (0.103 R)
• M8: 20,820,284 km (0.084 R)
• M9: 23,695,854 km (0.089 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 760.7

Radius: 5.1

Gravity: 29.25 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 9.91 AU - 10.29 AU

Year: 20725 Days

Day: 18.1 Hours

Environment

Temp: -235 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 80,687,442 km

• M1: 64,776 km (0.112 R)
• M2: 240,553 km (0.077 R)
• M3: 412,591 km (0.049 R)
• M4: 718,070 km (0.091 R)
• M5: 1,293,124 km (0.093 R)
• M6: 1,598,004 km (0.04 R)
• M7: 2,488,561 km (0.102 R)
• M8: 3,316,884 km (0.111 R)
• M9: 5,499,068 km (0.108 R)
• M10: 5,660,933 km (0.106 R)
• M11: 8,169,689 km (0.104 R)
• M12: 8,649,599 km (0.119 R)
• M13: 9,490,788 km (0.081 R)
• M14: 11,597,126 km (0.105 R)
• M15: 14,146,573 km (0.114 R)
• M16: 16,287,468 km (0.107 R)
• M17: 22,616,056 km (0.119 R)
• M18: 23,242,572 km (0.098 R)
• M19: 27,246,111 km (0.052 R)
• M20: 29,164,254 km (0.083 R)
• M21: 33,266,826 km (0.087 R)
• M22: 38,618,840 km (0.077 R)
• M23: 43,548,239 km (0.089 R)
• M24: 43,708,758 km (0.081 R)
• M25: 45,499,893 km (0.054 R)
• M26: 47,170,153 km (0.092 R)
• M27: 64,496,429 km (0.109 R)
• M28: 73,419,493 km (0.037 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: 517 - 15,181 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit