🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.21

Radius: 1.37

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.5 AU - 0.72 AU

Year: 313 Days

Day: 16.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 18.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.02

Radius: 1.01

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.65 AU - 0.69 AU

Year: 360 Days

Day: 18.3 Hours

Environment

Temp: -139 °C

Axial Tilt: 15 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,572,034 km

• M1: 114,742 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 27.7

Radius: 14.1

Gravity: 0.14 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.72 AU - 1.18 AU

Year: 607 Days

Day: 12.8 Hours

Environment

Temp: -146 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 41,572,034 km

• M1: 178,470 km (0.104 R)
• M2: 922,869 km (0.115 R)
• M3: 1,373,608 km (0.064 R)
• M4: 2,048,743 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 79.1

Radius: 12.6

Gravity: 0.5 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1.79 AU - 1.87 AU

Year: 1624 Days

Day: 14 Hours

Environment

Temp: -180 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 41,572,034 km

• M1: 156,779 km (0.065 R)
• M2: 581,637 km (0.089 R)
• M3: 1,041,800 km (0.096 R)
• M4: 2,135,809 km (0.111 R)
• M5: 2,649,528 km (0.062 R)
• M6: 3,056,284 km (0.056 R)
• M7: 3,479,646 km (0.095 R)
• M8: 4,039,741 km (0.078 R)
• M9: 5,851,521 km (0.104 R)
• M10: 6,278,473 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 986.6

Radius: 13.5

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 2.02 AU - 2.12 AU

Year: 1954 Days

Day: 12.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 100.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 41,572,034 km

• M1: 169,195 km (0.111 R)
• M2: 622,178 km (0.091 R)
• M3: 1,367,474 km (0.106 R)
• M4: 1,995,336 km (0.03 R)
• M5: 2,479,734 km (0.119 R)
• M6: 3,442,247 km (0.071 R)
• M7: 5,312,520 km (0.11 R)
• M8: 7,604,808 km (0.079 R)
• M9: 8,770,474 km (0.1 R)
• M10: 14,092,419 km (0.109 R)
• M11: 14,834,125 km (0.056 R)
• M12: 15,797,685 km (0.08 R)
• M13: 16,345,213 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 521.1

Radius: 12.4

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 3.17 AU - 4.63 AU

Year: 5052 Days

Day: 14.2 Hours

Environment

Temp: -210 °C

Axial Tilt: 176.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 41,572,034 km

• M1: 154,235 km (0.111 R)
• M2: 606,619 km (0.089 R)
• M3: 1,155,195 km (0.091 R)
• M4: 1,692,850 km (0.091 R)
• M5: 2,947,527 km (0.092 R)
• M6: 3,401,706 km (0.079 R)
• M7: 4,573,656 km (0.084 R)
• M8: 5,998,127 km (0.115 R)
• M9: 6,543,710 km (0.085 R)
• M10: 6,990,858 km (0.101 R)
• M11: 7,458,351 km (0.104 R)
• M12: 9,261,604 km (0.086 R)
• M13: 13,405,166 km (0.058 R)
• M14: 13,919,334 km (0.09 R)
• M15: 16,398,171 km (0.048 R)
• M16: 17,286,184 km (0.101 R)
• M17: 18,646,327 km (0.09 R)
• M18: 19,158,102 km (0.1 R)
• M19: 23,227,762 km (0.038 R)
• M20: 24,423,498 km (0.105 R)
• M21: 25,738,613 km (0.106 R)
• M22: 27,345,593 km (0.092 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 262.4

Radius: 9.9

Gravity: 2.68 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 4.31 AU - 5.61 AU

Year: 7247 Days

Day: 6.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 41,572,034 km

• M1: 123,418 km (0.07 R)
• M2: 437,424 km (0.12 R)
• M3: 1,438,683 km (0.103 R)
• M4: 3,234,904 km (0.078 R)
• M5: 4,903,369 km (0.11 R)
• M6: 6,501,224 km (0.084 R)
• M7: 8,533,063 km (0.104 R)
• M8: 9,189,648 km (0.103 R)
• M9: 11,135,617 km (0.085 R)
• M10: 13,240,160 km (0.109 R)
• M11: 14,601,351 km (0.095 R)
• M12: 14,928,372 km (0.09 R)
• M13: 17,416,932 km (0.09 R)
• M14: 20,917,971 km (0.051 R)
• M15: 22,325,687 km (0.118 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 606.5

Radius: 8.3

Gravity: 8.8 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 4.21 AU - 6.11 AU

Year: 7689 Days

Day: 13.3 Hours

Environment

Temp: -213 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 41,572,034 km

• M1: 103,223 km (0.064 R)
• M2: 590,612 km (0.092 R)
• M3: 930,948 km (0.107 R)
• M4: 1,262,157 km (0.115 R)
• M5: 2,102,598 km (0.11 R)
• M6: 2,423,934 km (0.109 R)
• M7: 3,452,719 km (0.085 R)
• M8: 4,128,901 km (0.033 R)
• M9: 6,689,718 km (0.111 R)
• M10: 6,978,591 km (0.109 R)
• M11: 7,581,620 km (0.083 R)
• M12: 10,014,829 km (0.106 R)
• M13: 10,979,586 km (0.109 R)
• M14: 12,057,888 km (0.066 R)
• M15: 24,523,729 km (0.08 R)
• M16: 26,628,271 km (0.098 R)
• M17: 27,355,766 km (0.096 R)
• M18: 29,617,835 km (0.046 R)
• M19: 32,411,127 km (0.112 R)
• M20: 38,056,053 km (0.069 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 108

Radius: 6.5

Gravity: 2.56 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 9.61 AU - 10.13 AU

Year: 20342 Days

Day: 21.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 41,572,034 km

• M1: 81,082 km (0.105 R)
• M2: 510,727 km (0.119 R)
• M3: 1,011,282 km (0.071 R)
• M4: 1,829,432 km (0.101 R)
• M5: 3,379,715 km (0.095 R)
• M6: 3,615,182 km (0.088 R)
• M7: 3,836,587 km (0.08 R)
• M8: 4,499,455 km (0.109 R)
• M9: 5,052,369 km (0.08 R)
• M10: 5,847,781 km (0.069 R)
• M11: 6,222,972 km (0.101 R)
• M12: 7,724,336 km (0.08 R)
• M13: 8,515,859 km (0.091 R)
• M14: 10,805,305 km (0.071 R)
• M15: 12,282,584 km (0.093 R)
• M16: 14,009,541 km (0.043 R)
• M17: 16,221,645 km (0.054 R)
• M18: 17,099,336 km (0.06 R)
• M19: 17,655,092 km (0.115 R)
• M20: 19,394,317 km (0.104 R)
• M21: 20,693,425 km (0.066 R)
• M22: 23,463,678 km (0.111 R)
• M23: 24,937,217 km (0.099 R)
• M24: 28,355,977 km (0.102 R)
• M25: 29,826,524 km (0.093 R)
• M26: 34,104,724 km (0.111 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 317 - 12,835 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit