🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.42

Radius: 1.64

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.55 AU - 0.71 AU

Year: 318 Days

Day: 23.8 Hours

Environment

Temp: -134 °C

Axial Tilt: 24.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 551.3

Radius: 11

Gravity: 4.56 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.62 AU - 0.88 AU

Year: 413 Days

Day: 5.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 149.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 21,760,611 km

• M1: 140,323 km (0.042 R)
• M2: 502,350 km (0.096 R)
• M3: 874,998 km (0.097 R)
• M4: 1,472,043 km (0.118 R)
• M5: 1,917,097 km (0.1 R)
• M6: 3,324,214 km (0.118 R)
• M7: 4,086,864 km (0.119 R)
• M8: 4,433,931 km (0.074 R)
• M9: 5,127,168 km (0.036 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 776.7

Radius: 14.5

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 0.78 AU - 0.8 AU

Year: 446 Days

Day: 7.7 Hours

Environment

Temp: -141 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 21,760,611 km

• M1: 180,265 km (0.101 R)
• M2: 636,240 km (0.107 R)
• M3: 1,219,223 km (0.074 R)
• M4: 1,774,530 km (0.115 R)
• M5: 2,330,436 km (0.085 R)
• M6: 3,215,756 km (0.1 R)
• M7: 3,775,850 km (0.109 R)
• M8: 4,444,254 km (0.063 R)
• M9: 4,922,518 km (0.088 R)
• M10: 5,619,943 km (0.051 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.7

Radius: 10.4

Gravity: 2.48 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.8 AU - 1.14 AU

Year: 607 Days

Day: 8.2 Hours

Environment

Temp: -150 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 21,760,611 km

• M1: 129,402 km (0.08 R)
• M2: 452,982 km (0.107 R)
• M3: 848,070 km (0.032 R)
• M4: 1,384,678 km (0.116 R)
• M5: 2,104,842 km (0.086 R)
• M6: 2,452,657 km (0.027 R)
• M7: 2,778,631 km (0.112 R)
• M8: 3,188,529 km (0.081 R)
• M9: 3,687,139 km (0.105 R)
• M10: 4,052,307 km (0.099 R)
• M11: 4,511,273 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 231.6

Radius: 9.5

Gravity: 2.57 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 1.95 AU - 2.29 AU

Year: 1963 Days

Day: 13.8 Hours

Environment

Temp: -189 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 21,760,611 km

• M1: 118,332 km (0.032 R)
• M2: 490,681 km (0.102 R)
• M3: 1,042,996 km (0.03 R)
• M4: 1,572,423 km (0.061 R)
• M5: 2,250,700 km (0.052 R)
• M6: 2,895,168 km (0.1 R)
• M7: 5,682,924 km (0.078 R)
• M8: 9,929,559 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 516.6

Radius: 10.9

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.68 AU - 2.66 AU

Year: 2032 Days

Day: 13.5 Hours

Environment

Temp: -191 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 21,760,611 km

• M1: 135,685 km (0.077 R)
• M2: 625,319 km (0.101 R)
• M3: 1,282,951 km (0.119 R)
• M4: 1,904,830 km (0.088 R)
• M5: 2,360,804 km (0.12 R)
• M6: 3,396,470 km (0.066 R)
• M7: 4,035,403 km (0.077 R)
• M8: 4,374,391 km (0.113 R)
• M9: 5,417,687 km (0.114 R)
• M10: 7,093,033 km (0.058 R)
• M11: 7,504,876 km (0.098 R)
• M12: 8,078,883 km (0.099 R)
• M13: 8,558,943 km (0.088 R)
• M14: 10,321,355 km (0.11 R)
• M15: 11,548,208 km (0.113 R)
• M16: 11,888,692 km (0.036 R)
• M17: 12,235,909 km (0.088 R)
• M18: 12,589,858 km (0.031 R)
• M19: 12,991,079 km (0.09 R)
• M20: 13,989,196 km (0.025 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 441.5

Radius: 9.8

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.94 AU - 2.44 AU

Year: 2061 Days

Day: 7.5 Hours

Environment

Temp: -184 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 21,760,611 km

• M1: 133,740 km (0.045 R)
• M2: 464,053 km (0.083 R)
• M3: 801,396 km (0.115 R)
• M4: 1,108,969 km (0.091 R)
• M5: 1,516,025 km (0.076 R)
• M6: 1,977,534 km (0.119 R)
• M7: 2,402,392 km (0.057 R)
• M8: 2,830,691 km (0.083 R)
• M9: 3,184,789 km (0.082 R)
• M10: 3,929,637 km (0.112 R)
• M11: 4,449,041 km (0.039 R)
• M12: 4,847,569 km (0.08 R)
• M13: 6,335,171 km (0.079 R)
• M14: 6,971,261 km (0.119 R)
• M15: 8,048,066 km (0.077 R)
• M16: 8,490,427 km (0.026 R)
• M17: 8,825,227 km (0.12 R)
• M18: 9,391,904 km (0.095 R)
• M19: 10,083,644 km (0.118 R)
• M20: 11,166,284 km (0.096 R)
• M21: 12,247,578 km (0.073 R)
• M22: 12,913,139 km (0.059 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 779.2

Radius: 11.3

Gravity: 6.1 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 2.14 AU - 3.32 AU

Year: 2868 Days

Day: 12.7 Hours

Environment

Temp: -202 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 21,760,611 km

• M1: 140,622 km (0.109 R)
• M2: 646,263 km (0.099 R)
• M3: 1,116,000 km (0.061 R)
• M4: 1,493,286 km (0.033 R)
• M5: 2,217,639 km (0.104 R)
• M6: 2,576,674 km (0.11 R)
• M7: 2,958,148 km (0.036 R)
• M8: 5,096,351 km (0.092 R)
• M9: 5,469,747 km (0.079 R)
• M10: 5,834,766 km (0.119 R)
• M11: 6,188,266 km (0.091 R)
• M12: 7,029,006 km (0.096 R)
• M13: 7,556,188 km (0.118 R)
• M14: 8,655,284 km (0.05 R)
• M15: 10,243,415 km (0.113 R)
• M16: 10,599,009 km (0.116 R)
• M17: 11,044,811 km (0.058 R)
• M18: 12,148,544 km (0.096 R)
• M19: 14,230,647 km (0.108 R)
• M20: 15,485,025 km (0.099 R)
• M21: 16,594,443 km (0.092 R)
• M22: 17,141,074 km (0.095 R)
• M23: 18,040,606 km (0.068 R)
• M24: 19,149,275 km (0.089 R)
• M25: 19,569,047 km (0.11 R)
• M26: 21,118,432 km (0.093 R)
• M27: 21,566,627 km (0.103 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: 486 - 19,475 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit