🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.89

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.5 AU - 0.8 AU

Year: 333 Days

Day: 18.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 848.8

Radius: 10.8

Gravity: 7.28 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.75 AU - 0.91 AU

Year: 481 Days

Day: 11 Hours

Environment

Temp: -139 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,833,237 km

• M1: 134,339 km (0.1 R)
• M2: 536,308 km (0.07 R)
• M3: 909,854 km (0.094 R)
• M4: 1,325,138 km (0.101 R)
• M5: 1,763,460 km (0.077 R)
• M6: 2,335,971 km (0.055 R)
• M7: 2,708,918 km (0.075 R)
• M8: 3,157,113 km (0.08 R)
• M9: 3,963,596 km (0.097 R)
• M10: 4,574,104 km (0.091 R)
• M11: 5,467,204 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 687.5

Radius: 12.6

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.64 AU - 2 AU

Year: 1561 Days

Day: 7 Hours

Environment

Temp: -185 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 52,833,237 km

• M1: 156,779 km (0.05 R)
• M2: 582,684 km (0.068 R)
• M3: 1,017,565 km (0.097 R)
• M4: 1,522,158 km (0.104 R)
• M5: 1,928,466 km (0.1 R)
• M6: 2,445,626 km (0.09 R)
• M7: 2,896,813 km (0.114 R)
• M8: 3,310,152 km (0.115 R)
• M9: 4,835,153 km (0.106 R)
• M10: 5,248,940 km (0.082 R)
• M11: 5,663,925 km (0.073 R)
• M12: 7,360,215 km (0.076 R)
• M13: 8,339,932 km (0.066 R)
• M14: 9,822,596 km (0.051 R)
• M15: 11,656,516 km (0.098 R)
• M16: 13,224,302 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 939.2

Radius: 12.9

Gravity: 5.64 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 1.97 AU - 2.13 AU

Year: 1866 Days

Day: 14.4 Hours

Environment

Temp: -185 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,833,237 km

• M1: 160,519 km (0.029 R)
• M2: 598,242 km (0.113 R)
• M3: 1,143,676 km (0.045 R)
• M4: 1,915,152 km (0.116 R)
• M5: 2,711,013 km (0.088 R)
• M6: 3,137,815 km (0.093 R)
• M7: 4,530,422 km (0.113 R)
• M8: 5,159,032 km (0.104 R)
• M9: 6,835,576 km (0.034 R)
• M10: 9,350,914 km (0.091 R)
• M11: 11,311,693 km (0.079 R)
• M12: 12,637,280 km (0.07 R)
• M13: 15,643,449 km (0.087 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 22.5

Radius: 13.2

Gravity: 0.13 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 2.49 AU - 3.59 AU

Year: 3370 Days

Day: 5.6 Hours

Environment

Temp: -196 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 52,833,237 km

• M1: 165,754 km (0.104 R)
• M2: 1,083,837 km (0.103 R)
• M3: 1,922,033 km (0.079 R)
• M4: 3,342,914 km (0.039 R)
• M5: 4,157,923 km (0.066 R)
• M6: 5,101,587 km (0.09 R)
• M7: 6,778,728 km (0.114 R)
• M8: 7,412,275 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 922

Radius: 13.6

Gravity: 4.98 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 3.13 AU - 3.23 AU

Year: 3606 Days

Day: 5.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 52,833,237 km

• M1: 169,195 km (0.097 R)
• M2: 1,861,446 km (0.09 R)
• M3: 2,613,026 km (0.113 R)
• M4: 3,208,426 km (0.088 R)
• M5: 3,786,920 km (0.099 R)
• M6: 4,340,881 km (0.095 R)
• M7: 6,767,359 km (0.12 R)
• M8: 8,472,176 km (0.117 R)
• M9: 11,771,707 km (0.118 R)
• M10: 12,378,925 km (0.025 R)
• M11: 15,512,402 km (0.082 R)
• M12: 16,015,649 km (0.103 R)
• M13: 16,645,755 km (0.069 R)
• M14: 18,950,161 km (0.094 R)
• M15: 22,651,511 km (0.08 R)
• M16: 24,035,142 km (0.07 R)
• M17: 24,483,487 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 771

Radius: 12.1

Gravity: 5.27 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 3.83 AU - 4.11 AU

Year: 5029 Days

Day: 7.8 Hours

Environment

Temp: -220 °C

Axial Tilt: 53.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 52,833,237 km

• M1: 150,495 km (0.113 R)
• M2: 846,724 km (0.093 R)
• M3: 1,362,238 km (0.106 R)
• M4: 1,886,130 km (0.097 R)
• M5: 2,442,484 km (0.111 R)
• M6: 2,915,962 km (0.093 R)
• M7: 4,216,266 km (0.1 R)
• M8: 5,092,162 km (0.12 R)
• M9: 5,691,301 km (0.104 R)
• M10: 6,661,593 km (0.077 R)
• M11: 7,557,684 km (0.116 R)
• M12: 8,454,673 km (0.105 R)
• M13: 9,009,831 km (0.112 R)
• M14: 9,462,963 km (0.099 R)
• M15: 10,640,298 km (0.085 R)
• M16: 13,179,273 km (0.063 R)
• M17: 16,643,960 km (0.054 R)
• M18: 17,076,896 km (0.106 R)
• M19: 18,289,985 km (0.046 R)
• M20: 19,834,434 km (0.099 R)
• M21: 21,536,857 km (0.11 R)
• M22: 21,977,274 km (0.084 R)
• M23: 26,299,754 km (0.102 R)
• M24: 27,570,289 km (0.063 R)
• M25: 30,878,646 km (0.107 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 21.5

Radius: 8.5

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 5.07 AU - 6.29 AU

Year: 8607 Days

Day: 13 Hours

Environment

Temp: -223 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,833,237 km

• M1: 161,267 km (0.113 R)
• M2: 1,981,723 km (0.073 R)
• M3: 3,248,069 km (0.1 R)
• M4: 3,565,216 km (0.04 R)
• M5: 5,067,927 km (0.091 R)
• M6: 5,696,388 km (0.037 R)
• M7: 5,971,349 km (0.108 R)
• M8: 6,875,369 km (0.113 R)
• M9: 7,508,916 km (0.075 R)
• M10: 9,262,651 km (0.084 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 588.1

Radius: 4.7

Gravity: 26.62 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 5.94 AU - 8.62 AU

Year: 12489 Days

Day: 24.6 Hours

Environment

Temp: -233 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 52,833,237 km

• M1: 58,942 km (0.097 R)
• M2: 287,078 km (0.107 R)
• M3: 582,983 km (0.113 R)
• M4: 954,285 km (0.034 R)
• M5: 1,168,060 km (0.086 R)
• M6: 1,630,617 km (0.12 R)
• M7: 3,046,710 km (0.088 R)
• M8: 3,669,187 km (0.071 R)
• M9: 5,228,894 km (0.083 R)
• M10: 5,858,552 km (0.112 R)
• M11: 6,116,608 km (0.116 R)
• M12: 6,498,232 km (0.12 R)
• M13: 7,017,935 km (0.092 R)
• M14: 10,569,987 km (0.097 R)
• M15: 12,697,119 km (0.063 R)
• M16: 14,820,960 km (0.105 R)
• M17: 16,073,693 km (0.083 R)
• M18: 16,873,144 km (0.041 R)
• M19: 17,698,774 km (0.12 R)
• M20: 22,145,122 km (0.095 R)
• M21: 22,861,397 km (0.063 R)
• M22: 42,234,920 km (0.086 R)
• M23: 42,645,267 km (0.1 R)
• M24: 43,058,306 km (0.104 R)
• M25: 43,613,165 km (0.097 R)
• M26: 45,449,329 km (0.06 R)
• M27: 45,880,171 km (0.061 R)
• M28: 46,604,374 km (0.114 R)
• M29: 50,034,354 km (0.103 R)
• M30: 51,888,919 km (0.074 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: 362 - 15,523 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit