🌌 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: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.83

Radius: 1.88

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.48 AU - 0.7 AU

Year: 293 Days

Day: 18.9 Hours

Environment

Temp: -118 °C

Axial Tilt: 21.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.95

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.49 AU - 0.79 AU

Year: 331 Days

Day: 29 Hours

Environment

Temp: -136 °C

Axial Tilt: 32.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 36,024,870 km

• M1: 449,093 km (0.107 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.77

Radius: 1.26

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.65 AU - 0.67 AU

Year: 346 Days

Day: 43.2 Hours

Environment

Temp: -142 °C

Axial Tilt: 20.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 552

Radius: 14.2

Gravity: 2.74 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.91 AU - 0.93 AU

Year: 570 Days

Day: 13.5 Hours

Environment

Temp: -151 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,024,870 km

• M1: 177,124 km (0.095 R)
• M2: 642,672 km (0.105 R)
• M3: 1,188,705 km (0.076 R)
• M4: 1,761,066 km (0.105 R)
• M5: 2,206,718 km (0.117 R)
• M6: 2,953,960 km (0.115 R)
• M7: 3,406,344 km (0.072 R)
• M8: 3,878,624 km (0.046 R)
• M9: 4,468,189 km (0.1 R)
• M10: 6,489,556 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 74.3

Radius: 13.1

Gravity: 0.43 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 1.02 AU - 1.22 AU

Year: 765 Days

Day: 11.1 Hours

Environment

Temp: -156 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 36,024,870 km

• M1: 230,830 km (0.055 R)
• M2: 793,018 km (0.092 R)
• M3: 1,200,373 km (0.088 R)
• M4: 1,633,908 km (0.03 R)
• M5: 3,009,760 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 795.6

Radius: 8.2

Gravity: 11.83 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 1.2 AU - 1.6 AU

Year: 1070 Days

Day: 14.6 Hours

Environment

Temp: -179 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,024,870 km

• M1: 102,026 km (0.109 R)
• M2: 548,127 km (0.119 R)
• M3: 1,040,902 km (0.05 R)
• M4: 1,354,010 km (0.08 R)
• M5: 2,046,200 km (0.113 R)
• M6: 2,519,976 km (0.11 R)
• M7: 2,861,957 km (0.03 R)
• M8: 3,263,627 km (0.086 R)
• M9: 3,577,633 km (0.066 R)
• M10: 4,301,388 km (0.053 R)
• M11: 5,607,078 km (0.074 R)
• M12: 6,103,294 km (0.086 R)
• M13: 6,396,655 km (0.082 R)
• M14: 7,536,292 km (0.072 R)
• M15: 8,194,971 km (0.117 R)
• M16: 8,636,435 km (0.089 R)
• M17: 9,064,434 km (0.084 R)
• M18: 10,466,017 km (0.103 R)
• M19: 10,821,461 km (0.054 R)
• M20: 11,118,263 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 587.1

Radius: 14.6

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 1.95 AU - 3.15 AU

Year: 2629 Days

Day: 14.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 36,024,870 km

• M1: 182,809 km (0.113 R)
• M2: 852,708 km (0.105 R)
• M3: 1,401,732 km (0.11 R)
• M4: 2,102,748 km (0.05 R)
• M5: 3,063,166 km (0.109 R)
• M6: 4,464,898 km (0.111 R)
• M7: 5,147,064 km (0.05 R)
• M8: 5,797,067 km (0.064 R)
• M9: 6,313,629 km (0.099 R)
• M10: 8,963,007 km (0.082 R)
• M11: 9,620,489 km (0.117 R)
• M12: 11,306,906 km (0.091 R)
• M13: 12,409,143 km (0.052 R)
• M14: 14,310,981 km (0.063 R)
• M15: 14,970,259 km (0.12 R)
• M16: 15,997,099 km (0.08 R)
• M17: 16,451,278 km (0.092 R)
• M18: 17,491,731 km (0.105 R)
• M19: 18,136,797 km (0.079 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439.2

Radius: 13.3

Gravity: 2.48 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 2.6 AU - 3.66 AU

Year: 3575 Days

Day: 5.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,024,870 km

• M1: 165,605 km (0.075 R)
• M2: 674,387 km (0.065 R)
• M3: 1,254,677 km (0.075 R)
• M4: 2,407,179 km (0.05 R)
• M5: 2,873,326 km (0.09 R)
• M6: 4,031,214 km (0.12 R)
• M7: 4,560,491 km (0.117 R)
• M8: 10,583,451 km (0.093 R)
• M9: 17,322,087 km (0.097 R)
• M10: 20,026,368 km (0.074 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 680.2

Radius: 8.8

Gravity: 8.78 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 4.01 AU - 4.05 AU

Year: 5224 Days

Day: 5.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 36,024,870 km

• M1: 110,254 km (0.086 R)
• M2: 470,934 km (0.106 R)
• M3: 824,883 km (0.025 R)
• M4: 1,457,382 km (0.116 R)
• M5: 2,117,259 km (0.115 R)
• M6: 3,098,322 km (0.056 R)
• M7: 3,421,902 km (0.092 R)
• M8: 3,767,922 km (0.116 R)
• M9: 4,113,642 km (0.112 R)
• M10: 5,112,657 km (0.076 R)
• M11: 5,863,489 km (0.042 R)
• M12: 7,691,425 km (0.043 R)
• M13: 8,287,872 km (0.112 R)
• M14: 8,834,652 km (0.12 R)
• M15: 9,239,763 km (0.058 R)
• M16: 9,614,954 km (0.076 R)
• M17: 10,000,169 km (0.079 R)
• M18: 10,893,418 km (0.086 R)
• M19: 11,501,982 km (0.072 R)
• M20: 12,482,147 km (0.105 R)
• M21: 13,892,406 km (0.056 R)
• M22: 14,608,082 km (0.116 R)
• M23: 16,474,166 km (0.119 R)
• M24: 16,964,399 km (0.113 R)
• M25: 18,103,138 km (0.093 R)
• M26: 28,056,931 km (0.115 R)
• M27: 28,580,374 km (0.099 R)
• M28: 30,372,257 km (0.116 R)

Planet 10 - Ice Giant

Semi-Major Axis: 6.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 294.1

Radius: 3.1

Gravity: 30.6 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 6.05 AU - 6.33 AU

Year: 9944 Days

Day: 20.1 Hours

Environment

Temp: -220 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 36,024,870 km

• M1: 38,596 km (0.092 R)
• M2: 150,495 km (0.102 R)
• M3: 281,543 km (0.096 R)
• M4: 2,060,262 km (0.103 R)
• M5: 2,341,655 km (0.072 R)
• M6: 2,743,027 km (0.089 R)
• M7: 3,146,043 km (0.095 R)
• M8: 3,895,229 km (0.074 R)
• M9: 4,756,165 km (0.114 R)
• M10: 5,863,937 km (0.084 R)
• M11: 6,091,326 km (0.102 R)
• M12: 6,529,049 km (0.119 R)
• M13: 7,280,031 km (0.07 R)
• M14: 8,368,505 km (0.066 R)
• M15: 8,740,256 km (0.081 R)
• M16: 9,427,957 km (0.043 R)
• M17: 10,765,212 km (0.107 R)
• M18: 16,023,428 km (0.114 R)
• M19: 17,781,203 km (0.062 R)
• M20: 19,519,530 km (0.11 R)
• M21: 24,478,700 km (0.108 R)
• M22: 25,751,329 km (0.072 R)
• M23: 28,243,779 km (0.085 R)
• M24: 29,642,968 km (0.084 R)
• M25: 32,882,360 km (0.031 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 155 - 14,073 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit