🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.87

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.51 AU - 0.53 AU

Year: 242 Days

Day: 45.8 Hours

Environment

Temp: -111 °C

Axial Tilt: 42.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 48,418,780 km

• M1: 46,076 km (0.112 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 453.1

Radius: 9.4

Gravity: 5.13 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.74 AU - 1.02 AU

Year: 533 Days

Day: 6 Hours

Environment

Temp: -149 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 48,418,780 km

• M1: 117,734 km (0.106 R)
• M2: 417,827 km (0.1 R)
• M3: 828,772 km (0.074 R)
• M4: 1,505,403 km (0.066 R)
• M5: 1,964,220 km (0.08 R)
• M6: 2,335,672 km (0.085 R)
• M7: 2,753,648 km (0.103 R)
• M8: 3,255,698 km (0.069 R)
• M9: 4,232,124 km (0.117 R)
• M10: 5,474,534 km (0.071 R)
• M11: 5,897,746 km (0.088 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 278.8

Radius: 12.9

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.9 AU - 0.96 AU

Year: 579 Days

Day: 9.7 Hours

Environment

Temp: -152 °C

Axial Tilt: 50 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 48,418,780 km

• M1: 160,668 km (0.105 R)
• M2: 636,539 km (0.092 R)
• M3: 1,524,851 km (0.119 R)
• M4: 1,936,694 km (0.111 R)
• M5: 2,551,392 km (0.086 R)
• M6: 3,140,957 km (0.088 R)
• M7: 3,857,231 km (0.101 R)
• M8: 4,321,434 km (0.089 R)
• M9: 4,895,740 km (0.058 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 94.3

Radius: 14

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.13 AU - 1.39 AU

Year: 913 Days

Day: 7.4 Hours

Environment

Temp: -167 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 48,418,780 km

• M1: 175,628 km (0.07 R)
• M2: 843,582 km (0.08 R)
• M3: 1,328,728 km (0.093 R)
• M4: 1,814,622 km (0.104 R)
• M5: 3,076,630 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 131.7

Radius: 11.5

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 1.19 AU - 1.39 AU

Year: 946 Days

Day: 11.4 Hours

Environment

Temp: -173 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 48,418,780 km

• M1: 143,016 km (0.092 R)
• M2: 566,976 km (0.059 R)
• M3: 1,153,250 km (0.069 R)
• M4: 1,536,819 km (0.114 R)
• M5: 1,998,927 km (0.059 R)
• M6: 2,505,914 km (0.088 R)
• M7: 3,119,564 km (0.119 R)
• M8: 3,534,250 km (0.081 R)
• M9: 4,131,444 km (0.12 R)
• M10: 4,839,641 km (0.042 R)
• M11: 5,398,239 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 56.9

Radius: 11.8

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 1.46 AU - 2.16 AU

Year: 1572 Days

Day: 5.1 Hours

Environment

Temp: -176 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 48,418,780 km

• M1: 146,756 km (0.117 R)
• M2: 1,817,614 km (0.088 R)
• M3: 2,221,379 km (0.105 R)
• M4: 4,226,289 km (0.09 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 967.4

Radius: 9.3

Gravity: 11.19 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 2.2 AU - 2.34 AU

Year: 2208 Days

Day: 9.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 48,418,780 km

• M1: 115,639 km (0.117 R)
• M2: 466,895 km (0.034 R)
• M3: 780,003 km (0.118 R)
• M4: 1,145,620 km (0.118 R)
• M5: 1,583,493 km (0.058 R)
• M6: 2,117,707 km (0.107 R)
• M7: 2,413,612 km (0.079 R)
• M8: 2,846,249 km (0.085 R)
• M9: 3,225,480 km (0.117 R)
• M10: 3,848,256 km (0.094 R)
• M11: 4,355,692 km (0.058 R)
• M12: 4,930,147 km (0.077 R)
• M13: 5,430,253 km (0.059 R)
• M14: 6,338,761 km (0.113 R)
• M15: 8,030,414 km (0.103 R)
• M16: 8,488,183 km (0.068 R)
• M17: 10,924,385 km (0.088 R)
• M18: 11,243,477 km (0.08 R)
• M19: 12,452,527 km (0.081 R)
• M20: 13,110,907 km (0.069 R)
• M21: 14,834,274 km (0.102 R)
• M22: 15,324,955 km (0.11 R)
• M23: 16,598,781 km (0.085 R)
• M24: 18,442,725 km (0.032 R)
• M25: 18,952,853 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 976.2

Radius: 10.3

Gravity: 9.2 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 4.2 AU - 4.24 AU

Year: 5597 Days

Day: 14 Hours

Environment

Temp: -211 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 48,418,780 km

• M1: 128,355 km (0.088 R)
• M2: 485,894 km (0.081 R)
• M3: 807,529 km (0.108 R)
• M4: 1,269,188 km (0.099 R)
• M5: 1,977,385 km (0.076 R)
• M6: 2,535,385 km (0.117 R)
• M7: 3,174,766 km (0.072 R)
• M8: 4,115,288 km (0.119 R)
• M9: 5,625,030 km (0.098 R)
• M10: 6,301,960 km (0.077 R)
• M11: 7,177,706 km (0.07 R)
• M12: 8,998,462 km (0.069 R)
• M13: 10,864,246 km (0.101 R)
• M14: 12,866,165 km (0.091 R)
• M15: 16,217,456 km (0.116 R)
• M16: 17,788,234 km (0.085 R)
• M17: 19,031,093 km (0.084 R)
• M18: 21,921,324 km (0.098 R)
• M19: 23,430,168 km (0.079 R)
• M20: 24,003,128 km (0.098 R)
• M21: 27,912,270 km (0.1 R)
• M22: 28,741,940 km (0.119 R)
• M23: 30,065,282 km (0.074 R)
• M24: 30,547,736 km (0.092 R)
• M25: 33,447,690 km (0.043 R)
• M26: 34,699,675 km (0.061 R)
• M27: 35,230,448 km (0.096 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 252.8

Radius: 4.1

Gravity: 15.04 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 8.01 AU - 9.49 AU

Year: 16712 Days

Day: 17 Hours

Environment

Temp: -236 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 48,418,780 km

• M1: 55,650 km (0.068 R)
• M2: 284,386 km (0.106 R)
• M3: 580,141 km (0.12 R)
• M4: 815,907 km (0.104 R)
• M5: 1,478,027 km (0.064 R)
• M6: 1,726,808 km (0.091 R)
• M7: 2,071,931 km (0.104 R)
• M8: 2,540,920 km (0.089 R)
• M9: 2,725,972 km (0.088 R)
• M10: 3,077,378 km (0.071 R)
• M11: 4,059,787 km (0.069 R)
• M12: 7,010,007 km (0.087 R)
• M13: 7,170,675 km (0.106 R)
• M14: 7,709,526 km (0.102 R)
• M15: 8,728,437 km (0.057 R)
• M16: 8,867,713 km (0.116 R)
• M17: 9,198,324 km (0.083 R)
• M18: 10,761,772 km (0.097 R)
• M19: 10,975,697 km (0.05 R)
• M20: 11,916,368 km (0.057 R)
• M21: 13,580,794 km (0.114 R)
• M22: 15,940,252 km (0.083 R)
• M23: 21,790,127 km (0.087 R)
• M24: 24,445,638 km (0.096 R)
• M25: 28,209,820 km (0.045 R)
• M26: 33,012,211 km (0.058 R)
• M27: 34,494,726 km (0.112 R)
• M28: 34,959,676 km (0.087 R)
• M29: 35,783,362 km (0.057 R)
• M30: 41,782,835 km (0.096 R)
• M31: 43,786,698 km (0.108 R)
• M32: 46,134,039 km (0.108 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 208 - 13,711 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit