🌌 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: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.6 AU - 0.72 AU

Year: 352 Days

Day: 25.1 Hours

Environment

Temp: -131 °C

Axial Tilt: 18.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 65,921,140 km

• M1: 51,162 km (0.091 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 999.7

Radius: 9.2

Gravity: 11.81 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.72 AU - 0.9 AU

Year: 478 Days

Day: 8.7 Hours

Environment

Temp: -147 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 65,921,140 km

• M1: 114,442 km (0.072 R)
• M2: 451,636 km (0.108 R)
• M3: 865,124 km (0.084 R)
• M4: 1,332,468 km (0.072 R)
• M5: 1,910,814 km (0.048 R)
• M6: 2,234,543 km (0.107 R)
• M7: 2,532,243 km (0.087 R)
• M8: 3,005,720 km (0.092 R)
• M9: 3,395,572 km (0.116 R)
• M10: 4,504,691 km (0.069 R)
• M11: 5,201,817 km (0.104 R)
• M12: 5,675,294 km (0.041 R)
• M13: 5,987,804 km (0.068 R)
• M14: 6,370,326 km (0.104 R)
• M15: 7,058,177 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 95.1

Radius: 12

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 1.28 AU - 1.32 AU

Year: 972 Days

Day: 12.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 44.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 65,921,140 km

• M1: 150,047 km (0.068 R)
• M2: 629,508 km (0.114 R)
• M3: 1,267,244 km (0.099 R)
• M4: 1,838,857 km (0.097 R)
• M5: 2,309,043 km (0.099 R)
• M6: 2,859,115 km (0.097 R)
• M7: 3,495,354 km (0.065 R)
• M8: 4,411,492 km (0.095 R)
• M9: 5,037,110 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 768.2

Radius: 9.2

Gravity: 9.08 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 1.3 AU - 1.44 AU

Year: 1052 Days

Day: 12 Hours

Environment

Temp: -170 °C

Axial Tilt: 96.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 65,921,140 km

• M1: 114,442 km (0.11 R)
• M2: 429,047 km (0.065 R)
• M3: 755,918 km (0.11 R)
• M4: 1,135,448 km (0.096 R)
• M5: 1,740,272 km (0.069 R)
• M6: 2,213,300 km (0.088 R)
• M7: 2,546,605 km (0.116 R)
• M8: 3,102,809 km (0.059 R)
• M9: 3,660,062 km (0.061 R)
• M10: 4,012,215 km (0.107 R)
• M11: 4,583,080 km (0.112 R)
• M12: 4,897,685 km (0.113 R)
• M13: 5,801,256 km (0.045 R)
• M14: 6,600,856 km (0.056 R)
• M15: 7,198,201 km (0.11 R)
• M16: 8,336,491 km (0.114 R)
• M17: 8,722,603 km (0.098 R)
• M18: 9,091,960 km (0.105 R)
• M19: 9,650,409 km (0.094 R)
• M20: 10,356,810 km (0.088 R)
• M21: 11,097,469 km (0.051 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 356.6

Radius: 12.9

Gravity: 2.14 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 1.21 AU - 1.87 AU

Year: 1254 Days

Day: 14.1 Hours

Environment

Temp: -170 °C

Axial Tilt: 46.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 65,921,140 km

• M1: 160,369 km (0.054 R)
• M2: 603,627 km (0.087 R)
• M3: 1,091,017 km (0.09 R)
• M4: 1,706,463 km (0.107 R)
• M5: 2,263,865 km (0.11 R)
• M6: 3,068,701 km (0.108 R)
• M7: 3,750,119 km (0.06 R)
• M8: 4,199,661 km (0.12 R)
• M9: 5,283,348 km (0.077 R)
• M10: 5,972,994 km (0.034 R)
• M11: 6,833,930 km (0.083 R)
• M12: 7,556,637 km (0.103 R)
• M13: 7,999,447 km (0.104 R)
• M14: 8,485,490 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 912.6

Radius: 13.4

Gravity: 5.08 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 3.6 AU - 5.36 AU

Year: 6221 Days

Day: 9.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 65,921,140 km

• M1: 166,951 km (0.071 R)
• M2: 608,415 km (0.112 R)
• M3: 1,210,247 km (0.093 R)
• M4: 1,644,380 km (0.109 R)
• M5: 2,842,808 km (0.04 R)
• M6: 3,382,109 km (0.039 R)
• M7: 4,451,883 km (0.104 R)
• M8: 7,633,082 km (0.073 R)
• M9: 8,981,407 km (0.115 R)
• M10: 9,419,879 km (0.054 R)
• M11: 10,292,483 km (0.111 R)
• M12: 11,168,379 km (0.092 R)
• M13: 12,412,734 km (0.118 R)
• M14: 13,575,558 km (0.08 R)
• M15: 14,809,890 km (0.105 R)
• M16: 15,673,519 km (0.109 R)
• M17: 18,396,349 km (0.109 R)
• M18: 18,890,920 km (0.074 R)
• M19: 20,129,141 km (0.099 R)
• M20: 25,365,815 km (0.058 R)
• M21: 26,962,473 km (0.112 R)
• M22: 29,674,383 km (0.072 R)
• M23: 30,748,945 km (0.11 R)
• M24: 32,358,319 km (0.08 R)
• M25: 34,984,210 km (0.095 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 621.5

Radius: 5.4

Gravity: 21.31 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 7.99 AU - 8.25 AU

Year: 15179 Days

Day: 24.9 Hours

Environment

Temp: -219 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 65,921,140 km

• M1: 67,469 km (0.073 R)
• M2: 290,818 km (0.112 R)
• M3: 500,405 km (0.082 R)
• M4: 755,320 km (0.088 R)
• M5: 1,219,372 km (0.079 R)
• M6: 1,980,676 km (0.047 R)
• M7: 2,669,574 km (0.113 R)
• M8: 3,783,181 km (0.081 R)
• M9: 4,134,137 km (0.087 R)
• M10: 4,474,622 km (0.098 R)
• M11: 7,094,829 km (0.099 R)
• M12: 10,533,186 km (0.114 R)
• M13: 12,012,111 km (0.086 R)
• M14: 13,224,901 km (0.102 R)
• M15: 20,530,662 km (0.056 R)
• M16: 26,102,136 km (0.039 R)
• M17: 27,475,743 km (0.067 R)
• M18: 34,443,863 km (0.111 R)
• M19: 39,416,346 km (0.096 R)
• M20: 40,381,552 km (0.098 R)
• M21: 47,429,257 km (0.055 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 674.2

Radius: 7.9

Gravity: 10.8 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 6.42 AU - 10.58 AU

Year: 16257 Days

Day: 21.7 Hours

Environment

Temp: -233 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 65,921,140 km

• M1: 98,884 km (0.084 R)
• M2: 439,070 km (0.102 R)
• M3: 868,116 km (0.116 R)
• M4: 1,621,940 km (0.047 R)
• M5: 2,021,516 km (0.08 R)
• M6: 2,754,396 km (0.115 R)
• M7: 3,093,086 km (0.078 R)
• M8: 3,486,678 km (0.11 R)
• M9: 3,767,473 km (0.051 R)
• M10: 4,216,865 km (0.12 R)
• M11: 4,535,957 km (0.065 R)
• M12: 7,423,346 km (0.075 R)
• M13: 9,787,291 km (0.05 R)
• M14: 11,907,243 km (0.1 R)
• M15: 13,616,847 km (0.063 R)
• M16: 14,315,918 km (0.113 R)
• M17: 15,260,329 km (0.1 R)
• M18: 16,635,582 km (0.093 R)
• M19: 19,022,117 km (0.106 R)
• M20: 19,455,353 km (0.052 R)
• M21: 23,162,687 km (0.111 R)
• M22: 25,915,438 km (0.093 R)
• M23: 32,551,449 km (0.095 R)
• M24: 37,193,322 km (0.113 R)
• M25: 38,007,583 km (0.102 R)
• M26: 59,987,400 km (0.118 R)
• M27: 61,483,079 km (0.116 R)
• M28: 62,050,205 km (0.05 R)
• M29: 62,620,921 km (0.097 R)
• M30: 63,772,824 km (0.068 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 371 - 18,444 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit