🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.08

Radius: 1.03

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.45 AU - 0.61 AU

Year: 253 Days

Day: 31 Hours

Environment

Temp: -113 °C

Axial Tilt: 34.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,218,490 km

• M1: 336,446 km (0.072 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.72

Radius: 1.24

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.47 AU - 0.61 AU

Year: 260 Days

Day: 13.8 Hours

Environment

Temp: -114 °C

Axial Tilt: 21.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,218,490 km

• M1: 33,061 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 96.2

Radius: 13.2

Gravity: 0.55 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.54 AU - 0.88 AU

Year: 392 Days

Day: 8.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 87.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 29,218,490 km

• M1: 164,109 km (0.092 R)
• M2: 620,532 km (0.069 R)
• M3: 1,082,939 km (0.086 R)
• M4: 1,537,717 km (0.11 R)
• M5: 2,032,137 km (0.056 R)
• M6: 2,796,732 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 809.4

Radius: 10.9

Gravity: 6.81 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.81 AU - 1.13 AU

Year: 627 Days

Day: 14.3 Hours

Environment

Temp: -166 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,218,490 km

• M1: 135,536 km (0.087 R)
• M2: 556,654 km (0.069 R)
• M3: 967,300 km (0.055 R)
• M4: 1,436,140 km (0.043 R)
• M5: 1,816,417 km (0.082 R)
• M6: 2,157,500 km (0.079 R)
• M7: 2,706,375 km (0.078 R)
• M8: 3,193,167 km (0.065 R)
• M9: 3,836,737 km (0.066 R)
• M10: 4,359,132 km (0.071 R)
• M11: 5,400,932 km (0.053 R)
• M12: 6,356,114 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 141.2

Radius: 12.9

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1.11 AU - 1.35 AU

Year: 895 Days

Day: 7.9 Hours

Environment

Temp: -162 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 29,218,490 km

• M1: 160,519 km (0.045 R)
• M2: 699,669 km (0.086 R)
• M3: 1,234,482 km (0.117 R)
• M4: 2,000,273 km (0.073 R)
• M5: 2,418,250 km (0.098 R)
• M6: 3,411,280 km (0.033 R)
• M7: 3,950,132 km (0.1 R)
• M8: 5,469,149 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.4

Radius: 12.5

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 4.92 AU - 5.3 AU

Year: 7578 Days

Day: 13.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 29,218,490 km

• M1: 155,432 km (0.045 R)
• M2: 680,072 km (0.11 R)
• M3: 1,260,063 km (0.025 R)
• M4: 2,113,220 km (0.09 R)
• M5: 2,668,826 km (0.051 R)
• M6: 3,071,992 km (0.104 R)
• M7: 4,327,268 km (0.118 R)
• M8: 5,085,729 km (0.081 R)
• M9: 6,189,014 km (0.09 R)
• M10: 7,557,684 km (0.056 R)
• M11: 8,253,763 km (0.115 R)
• M12: 8,992,029 km (0.101 R)
• M13: 16,891,993 km (0.089 R)
• M14: 18,014,725 km (0.11 R)
• M15: 19,755,296 km (0.055 R)
• M16: 20,703,597 km (0.118 R)
• M17: 25,053,903 km (0.038 R)
• M18: 27,397,504 km (0.036 R)
• M19: 34,984,060 km (0.075 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 24

Radius: 13.4

Gravity: 0.13 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 4.41 AU - 6.85 AU

Year: 8763 Days

Day: 11.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 29,218,490 km

• M1: 184,005 km (0.062 R)
• M2: 759,808 km (0.108 R)
• M3: 1,539,512 km (0.033 R)
• M4: 1,973,346 km (0.106 R)
• M5: 2,700,092 km (0.092 R)
• M6: 4,630,503 km (0.082 R)
• M7: 5,531,980 km (0.103 R)
• M8: 8,885,216 km (0.086 R)
• M9: 10,412,909 km (0.119 R)
• M10: 11,622,707 km (0.032 R)
• M11: 13,900,036 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 144.4

Radius: 7.8

Gravity: 2.37 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 7.43 AU - 8.17 AU

Year: 14291 Days

Day: 20.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 29,218,490 km

• M1: 100,979 km (0.039 R)
• M2: 640,877 km (0.046 R)
• M3: 1,394,252 km (0.05 R)
• M4: 4,998,813 km (0.058 R)
• M5: 6,267,852 km (0.117 R)
• M6: 10,521,817 km (0.051 R)
• M7: 11,099,863 km (0.05 R)
• M8: 17,029,623 km (0.114 R)
• M9: 20,513,309 km (0.087 R)
• M10: 25,543,687 km (0.108 R)
• M11: 26,852,070 km (0.116 R)
• M12: 29,791,818 km (0.077 R)
• M13: 31,536,129 km (0.077 R)
• M14: 33,966,496 km (0.11 R)
• M15: 34,488,144 km (0.035 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 68.6

Radius: 3.3

Gravity: 6.3 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 6.4 AU - 9.74 AU

Year: 15039 Days

Day: 16.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 29,218,490 km

• M1: 40,990 km (0.073 R)
• M2: 205,547 km (0.089 R)
• M3: 364,570 km (0.096 R)
• M4: 565,779 km (0.078 R)
• M5: 1,051,972 km (0.045 R)
• M6: 1,335,460 km (0.069 R)
• M7: 2,594,925 km (0.097 R)
• M8: 2,937,055 km (0.063 R)
• M9: 3,128,690 km (0.117 R)
• M10: 3,431,925 km (0.107 R)
• M11: 3,911,386 km (0.094 R)
• M12: 4,072,952 km (0.114 R)
• M13: 5,275,719 km (0.082 R)
• M14: 5,822,648 km (0.067 R)
• M15: 6,187,069 km (0.106 R)
• M16: 15,375,520 km (0.05 R)
• M17: 15,836,131 km (0.037 R)
• M18: 16,011,161 km (0.036 R)
• M19: 16,424,649 km (0.056 R)
• M20: 18,664,279 km (0.102 R)
• M21: 22,173,546 km (0.056 R)
• M22: 24,508,170 km (0.073 R)
• M23: 27,251,197 km (0.08 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 440 - 18,772 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit