🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.31

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.46 AU - 0.74 AU

Year: 300 Days

Day: 24.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 22.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,529,615 km

• M1: 50,115 km (0.108 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 343.2

Radius: 8.8

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.8 AU - 0.82 AU

Year: 471 Days

Day: 9.5 Hours

Environment

Temp: -151 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 39,529,615 km

• M1: 109,655 km (0.086 R)
• M2: 461,360 km (0.098 R)
• M3: 869,463 km (0.11 R)
• M4: 1,238,371 km (0.101 R)
• M5: 1,642,285 km (0.074 R)
• M6: 2,206,569 km (0.078 R)
• M7: 2,924,938 km (0.095 R)
• M8: 3,372,086 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 92

Radius: 13

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.84 AU - 0.94 AU

Year: 542 Days

Day: 12.9 Hours

Environment

Temp: -148 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 39,529,615 km

• M1: 165,006 km (0.111 R)
• M2: 644,318 km (0.084 R)
• M3: 1,152,652 km (0.119 R)
• M4: 1,611,019 km (0.104 R)
• M5: 2,038,421 km (0.116 R)
• M6: 2,681,243 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 531.9

Radius: 11.3

Gravity: 4.17 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 2.62 AU - 4.26 AU

Year: 4120 Days

Day: 11.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 46.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 39,529,615 km

• M1: 142,268 km (0.112 R)
• M2: 920,326 km (0.108 R)
• M3: 1,976,038 km (0.104 R)
• M4: 2,547,502 km (0.085 R)
• M5: 3,433,870 km (0.056 R)
• M6: 4,001,893 km (0.082 R)
• M7: 5,754,132 km (0.082 R)
• M8: 6,924,287 km (0.111 R)
• M9: 8,894,042 km (0.1 R)
• M10: 21,798,504 km (0.116 R)
• M11: 22,896,104 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 620.5

Radius: 8.5

Gravity: 8.59 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 2.84 AU - 4.08 AU

Year: 4156 Days

Day: 10.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 39,529,615 km

• M1: 105,915 km (0.078 R)
• M2: 394,789 km (0.079 R)
• M3: 828,323 km (0.085 R)
• M4: 1,397,992 km (0.11 R)
• M5: 2,094,221 km (0.092 R)
• M6: 2,418,399 km (0.114 R)
• M7: 2,810,346 km (0.1 R)
• M8: 3,131,831 km (0.117 R)
• M9: 4,744,796 km (0.088 R)
• M10: 5,281,553 km (0.049 R)
• M11: 5,801,555 km (0.07 R)
• M12: 6,265,458 km (0.107 R)
• M13: 7,601,666 km (0.097 R)
• M14: 8,051,357 km (0.061 R)
• M15: 8,409,196 km (0.102 R)
• M16: 9,272,674 km (0.058 R)
• M17: 11,620,912 km (0.118 R)
• M18: 12,078,532 km (0.051 R)
• M19: 12,358,729 km (0.096 R)
• M20: 12,883,817 km (0.107 R)
• M21: 13,724,408 km (0.092 R)
• M22: 14,339,405 km (0.068 R)
• M23: 18,360,745 km (0.06 R)
• M24: 20,661,411 km (0.117 R)
• M25: 21,605,822 km (0.118 R)
• M26: 25,290,418 km (0.115 R)
• M27: 25,826,726 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 81

Radius: 9.8

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 4.87 AU - 6.23 AU

Year: 8442 Days

Day: 5.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 39,529,615 km

• M1: 134,189 km (0.115 R)
• M2: 515,065 km (0.053 R)
• M3: 832,512 km (0.052 R)
• M4: 2,013,139 km (0.108 R)
• M5: 4,725,647 km (0.1 R)
• M6: 6,266,206 km (0.06 R)
• M7: 7,411,827 km (0.056 R)
• M8: 9,402,675 km (0.111 R)
• M9: 9,922,976 km (0.035 R)
• M10: 10,540,965 km (0.08 R)
• M11: 12,461,353 km (0.102 R)
• M12: 19,368,137 km (0.098 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 435.3

Radius: 10.6

Gravity: 3.87 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 5.67 AU - 6.25 AU

Year: 9395 Days

Day: 11.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 39,529,615 km

• M1: 131,796 km (0.072 R)
• M2: 461,360 km (0.061 R)
• M3: 898,634 km (0.111 R)
• M4: 1,471,893 km (0.048 R)
• M5: 1,939,536 km (0.073 R)
• M6: 2,615,719 km (0.091 R)
• M7: 3,374,778 km (0.073 R)
• M8: 4,543,587 km (0.058 R)
• M9: 5,296,662 km (0.046 R)
• M10: 6,063,950 km (0.044 R)
• M11: 8,986,643 km (0.114 R)
• M12: 9,385,770 km (0.118 R)
• M13: 11,561,821 km (0.109 R)
• M14: 13,878,194 km (0.096 R)
• M15: 14,472,397 km (0.116 R)
• M16: 15,270,053 km (0.094 R)
• M17: 16,357,031 km (0.09 R)
• M18: 19,556,481 km (0.058 R)
• M19: 20,152,628 km (0.043 R)
• M20: 22,334,812 km (0.108 R)
• M21: 23,818,225 km (0.094 R)
• M22: 25,103,719 km (0.071 R)
• M23: 25,630,603 km (0.081 R)
• M24: 26,434,841 km (0.097 R)
• M25: 29,528,226 km (0.087 R)
• M26: 31,010,891 km (0.064 R)
• M27: 36,873,182 km (0.117 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 182 - 15,073 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit