🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.56

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.52 AU - 0.74 AU

Year: 179 Days

Day: 28.6 Hours

Environment

Temp: 142 °C

Axial Tilt: 32.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.48

Radius: 0.75

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.68 AU - 0.88 AU

Year: 247 Days

Day: 43.5 Hours

Environment

Temp: 133 °C

Axial Tilt: 16.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 58,569,486 km

• M1: 220,956 km (0.072 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.5

Radius: 1.44

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.62 AU - 0.96 AU

Year: 251 Days

Day: 35.4 Hours

Environment

Temp: 150 °C

Axial Tilt: 7.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.03

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.75 AU - 0.95 AU

Year: 281 Days

Day: 19.3 Hours

Environment

Temp: 146 °C

Axial Tilt: 117.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 5 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.69

Radius: 1.23

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.66 AU - 1.06 AU

Year: 286 Days

Day: 36 Hours

Environment

Temp: 166 °C

Axial Tilt: 8.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 58,569,486 km

• M1: 42,336 km (0.063 R)

Planet 6 - Terrestrial

Semi-Major Axis: 4.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.12

Radius: 0.43

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 3.23 AU - 5.33 AU

Year: 3171 Days

Day: 24.2 Hours

Environment

Temp: -121 °C

Axial Tilt: 37.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 8.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 725.8

Radius: 11.7

Gravity: 5.3 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 8.18 AU - 9.46 AU

Year: 9382 Days

Day: 11.7 Hours

Environment

Temp: -174 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 58,569,486 km

• M1: 145,559 km (0.117 R)
• M2: 774,917 km (0.054 R)
• M3: 1,496,278 km (0.108 R)
• M4: 3,339,623 km (0.087 R)
• M5: 4,014,758 km (0.095 R)
• M6: 4,399,673 km (0.108 R)
• M7: 4,992,380 km (0.113 R)
• M8: 7,537,638 km (0.071 R)
• M9: 8,974,526 km (0.079 R)
• M10: 9,880,640 km (0.091 R)
• M11: 11,111,083 km (0.062 R)
• M12: 12,556,497 km (0.088 R)
• M13: 13,689,552 km (0.119 R)
• M14: 14,249,496 km (0.112 R)
• M15: 15,019,776 km (0.115 R)
• M16: 15,817,731 km (0.078 R)
• M17: 16,996,113 km (0.115 R)
• M18: 19,762,028 km (0.1 R)
• M19: 20,477,555 km (0.061 R)
• M20: 23,869,238 km (0.107 R)
• M21: 27,520,323 km (0.07 R)
• M22: 29,427,248 km (0.092 R)
• M23: 31,313,527 km (0.106 R)
• M24: 39,668,419 km (0.085 R)
• M25: 40,298,375 km (0.094 R)
• M26: 41,320,278 km (0.115 R)
• M27: 41,967,588 km (0.075 R)
• M28: 42,885,371 km (0.036 R)
• M29: 46,411,393 km (0.116 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 497.5

Radius: 13.1

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 8.04 AU - 9.68 AU

Year: 9445 Days

Day: 10 Hours

Environment

Temp: -168 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 58,569,486 km

• M1: 163,062 km (0.068 R)
• M2: 573,558 km (0.096 R)
• M3: 1,060,200 km (0.12 R)
• M4: 1,830,180 km (0.079 R)
• M5: 2,538,975 km (0.114 R)
• M6: 3,356,976 km (0.116 R)
• M7: 3,927,692 km (0.095 R)
• M8: 5,675,743 km (0.048 R)
• M9: 6,489,556 km (0.114 R)
• M10: 8,519,300 km (0.116 R)
• M11: 9,820,053 km (0.095 R)
• M12: 10,892,221 km (0.096 R)
• M13: 12,312,802 km (0.103 R)
• M14: 15,264,668 km (0.04 R)
• M15: 15,777,190 km (0.06 R)
• M16: 16,367,653 km (0.044 R)
• M17: 17,040,843 km (0.079 R)
• M18: 19,171,865 km (0.107 R)
• M19: 21,555,108 km (0.12 R)
• M20: 23,530,997 km (0.099 R)
• M21: 25,714,976 km (0.097 R)
• M22: 26,717,581 km (0.115 R)
• M23: 31,916,556 km (0.04 R)
• M24: 34,369,064 km (0.09 R)
• M25: 36,601,662 km (0.072 R)
• M26: 39,887,430 km (0.091 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 258.6

Radius: 6.9

Gravity: 5.43 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 14.21 AU - 16.91 AU

Year: 21983 Days

Day: 17.8 Hours

Environment

Temp: -183 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 58,569,486 km

• M1: 87,066 km (0.109 R)
• M2: 307,872 km (0.054 R)
• M3: 935,435 km (0.092 R)
• M4: 1,453,942 km (0.101 R)
• M5: 2,149,572 km (0.116 R)
• M6: 7,136,267 km (0.115 R)
• M7: 10,411,563 km (0.108 R)
• M8: 18,719,481 km (0.109 R)
• M9: 20,231,766 km (0.079 R)
• M10: 20,753,563 km (0.041 R)
• M11: 24,561,726 km (0.088 R)
• M12: 25,860,236 km (0.085 R)
• M13: 28,053,341 km (0.085 R)
• M14: 28,484,781 km (0.063 R)
• M15: 42,436,877 km (0.046 R)
• M16: 47,279,509 km (0.099 R)

Kuiper Belt

Range: 30.6 - 47.6 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 245 - 10,381 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit