🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.2

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.44 AU - 0.58 AU

Year: 235 Days

Day: 18.5 Hours

Environment

Temp: -122 °C

Axial Tilt: 0.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.53

Radius: 1.19

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.44 AU - 0.58 AU

Year: 235 Days

Day: 47.8 Hours

Environment

Temp: -126 °C

Axial Tilt: 23.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 50,038,636 km

• M1: 30,368 km (0.083 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.99

Radius: 1

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.38 AU - 0.64 AU

Year: 235 Days

Day: 12.8 Hours

Environment

Temp: -122 °C

Axial Tilt: 37 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116.4

Radius: 14.4

Gravity: 0.56 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.56 AU - 0.88 AU

Year: 394 Days

Day: 8.5 Hours

Environment

Temp: -136 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 50,038,636 km

• M1: 179,069 km (0.07 R)
• M2: 637,885 km (0.053 R)
• M3: 1,229,246 km (0.109 R)
• M4: 1,730,399 km (0.067 R)
• M5: 2,298,422 km (0.06 R)
• M6: 2,774,741 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 353.8

Radius: 8.8

Gravity: 4.57 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1.13 AU - 1.25 AU

Year: 838 Days

Day: 13.3 Hours

Environment

Temp: -160 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 50,038,636 km

• M1: 130,599 km (0.051 R)
• M2: 450,888 km (0.113 R)
• M3: 740,210 km (0.12 R)
• M4: 1,027,438 km (0.073 R)
• M5: 1,316,760 km (0.109 R)
• M6: 1,692,550 km (0.069 R)
• M7: 2,311,437 km (0.11 R)
• M8: 3,923,055 km (0.086 R)
• M9: 4,487,487 km (0.111 R)
• M10: 5,452,244 km (0.047 R)
• M11: 6,469,360 km (0.077 R)
• M12: 6,834,977 km (0.074 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.3

Radius: 9.9

Gravity: 8.42 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 1.74 AU - 2.62 AU

Year: 2078 Days

Day: 12.5 Hours

Environment

Temp: -195 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 50,038,636 km

• M1: 123,119 km (0.099 R)
• M2: 484,697 km (0.048 R)
• M3: 852,857 km (0.099 R)
• M4: 1,269,039 km (0.07 R)
• M5: 2,052,034 km (0.049 R)
• M6: 2,452,956 km (0.069 R)
• M7: 2,844,604 km (0.048 R)
• M8: 3,227,574 km (0.051 R)
• M9: 3,572,846 km (0.058 R)
• M10: 4,716,821 km (0.098 R)
• M11: 5,540,507 km (0.076 R)
• M12: 5,936,044 km (0.071 R)
• M13: 6,297,771 km (0.117 R)
• M14: 7,008,511 km (0.083 R)
• M15: 8,332,003 km (0.086 R)
• M16: 10,507,006 km (0.115 R)
• M17: 12,400,317 km (0.116 R)
• M18: 12,907,155 km (0.108 R)
• M19: 16,093,889 km (0.094 R)
• M20: 16,494,362 km (0.049 R)
• M21: 17,004,341 km (0.063 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.7

Radius: 10.9

Gravity: 5.37 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 3.41 AU - 4.59 AU

Year: 5165 Days

Day: 14.1 Hours

Environment

Temp: -205 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 50,038,636 km

• M1: 136,583 km (0.054 R)
• M2: 604,226 km (0.091 R)
• M3: 1,704,668 km (0.102 R)
• M4: 2,279,423 km (0.112 R)
• M5: 3,093,385 km (0.049 R)
• M6: 4,402,067 km (0.113 R)
• M7: 5,180,724 km (0.115 R)
• M8: 5,690,553 km (0.07 R)
• M9: 6,745,069 km (0.099 R)
• M10: 7,600,170 km (0.046 R)
• M11: 9,238,117 km (0.116 R)
• M12: 10,468,111 km (0.101 R)
• M13: 11,708,577 km (0.058 R)
• M14: 13,829,426 km (0.11 R)
• M15: 14,206,263 km (0.114 R)
• M16: 14,868,383 km (0.096 R)
• M17: 16,373,337 km (0.084 R)
• M18: 17,348,566 km (0.12 R)
• M19: 19,481,682 km (0.098 R)
• M20: 19,887,541 km (0.108 R)
• M21: 21,139,077 km (0.101 R)
• M22: 22,888,474 km (0.113 R)
• M23: 24,029,756 km (0.09 R)
• M24: 24,811,405 km (0.092 R)
• M25: 25,934,137 km (0.093 R)
• M26: 27,766,262 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 249.7

Radius: 6.9

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 7.13 AU - 11.03 AU

Year: 17666 Days

Day: 19.7 Hours

Environment

Temp: -219 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 50,038,636 km

• M1: 86,468 km (0.05 R)
• M2: 433,834 km (0.107 R)
• M3: 654,790 km (0.113 R)
• M4: 1,113,307 km (0.039 R)
• M5: 1,573,919 km (0.053 R)
• M6: 1,816,417 km (0.065 R)
• M7: 2,657,307 km (0.119 R)
• M8: 3,117,919 km (0.085 R)
• M9: 3,553,847 km (0.089 R)
• M10: 8,718,115 km (0.064 R)
• M11: 9,483,607 km (0.064 R)
• M12: 12,997,362 km (0.117 R)
• M13: 17,889,063 km (0.091 R)
• M14: 18,808,342 km (0.061 R)
• M15: 25,185,101 km (0.116 R)
• M16: 26,436,637 km (0.101 R)
• M17: 29,376,983 km (0.079 R)
• M18: 34,710,745 km (0.116 R)
• M19: 37,234,611 km (0.106 R)
• M20: 40,525,465 km (0.046 R)
• M21: 44,557,726 km (0.085 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: 495 - 13,568 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit