🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.77

Radius: 1.26

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.53 AU - 0.77 AU

Year: 344 Days

Day: 23.2 Hours

Environment

Temp: -138 °C

Axial Tilt: 27.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 478.5

Radius: 8.1

Gravity: 7.29 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.66 AU - 0.96 AU

Year: 478 Days

Day: 11.3 Hours

Environment

Temp: -151 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 49,617,756 km

• M1: 100,679 km (0.116 R)
• M2: 566,228 km (0.085 R)
• M3: 865,573 km (0.102 R)
• M4: 1,202,318 km (0.098 R)
• M5: 2,206,419 km (0.093 R)
• M6: 2,793,291 km (0.117 R)
• M7: 3,201,843 km (0.075 R)
• M8: 4,999,710 km (0.06 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 125.1

Radius: 8.7

Gravity: 1.65 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.97 AU - 1.29 AU

Year: 788 Days

Day: 5.8 Hours

Environment

Temp: -170 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 49,617,756 km

• M1: 108,159 km (0.025 R)
• M2: 648,956 km (0.055 R)
• M3: 1,067,231 km (0.1 R)
• M4: 1,539,811 km (0.117 R)
• M5: 1,918,293 km (0.111 R)
• M6: 2,775,041 km (0.059 R)
• M7: 3,175,514 km (0.095 R)
• M8: 3,697,012 km (0.109 R)
• M9: 4,585,324 km (0.034 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 531

Radius: 12.1

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 1.14 AU - 1.22 AU

Year: 841 Days

Day: 9.5 Hours

Environment

Temp: -176 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 49,617,756 km

• M1: 156,779 km (0.105 R)
• M2: 544,237 km (0.053 R)
• M3: 958,474 km (0.05 R)
• M4: 1,464,862 km (0.044 R)
• M5: 2,053,231 km (0.099 R)
• M6: 2,526,110 km (0.1 R)
• M7: 2,973,258 km (0.107 R)
• M8: 4,561,837 km (0.1 R)
• M9: 6,892,124 km (0.098 R)
• M10: 8,035,051 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 24.4

Radius: 13

Gravity: 0.14 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 1.88 AU - 1.9 AU

Year: 1705 Days

Day: 8.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 49,617,756 km

• M1: 161,865 km (0.09 R)
• M2: 603,179 km (0.081 R)
• M3: 1,311,375 km (0.042 R)
• M4: 3,009,610 km (0.116 R)
• M5: 3,705,090 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 395.5

Radius: 14.2

Gravity: 1.96 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 1.49 AU - 2.31 AU

Year: 1718 Days

Day: 11 Hours

Environment

Temp: -181 °C

Axial Tilt: 44.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 49,617,756 km

• M1: 176,974 km (0.057 R)
• M2: 762,949 km (0.075 R)
• M3: 1,538,165 km (0.077 R)
• M4: 2,963,534 km (0.091 R)
• M5: 3,949,234 km (0.073 R)
• M6: 4,565,129 km (0.053 R)
• M7: 5,577,308 km (0.12 R)
• M8: 6,638,106 km (0.06 R)
• M9: 7,179,052 km (0.09 R)
• M10: 8,690,290 km (0.094 R)
• M11: 11,445,883 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 670.1

Radius: 8.6

Gravity: 9.06 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 3.42 AU - 3.7 AU

Year: 4406 Days

Day: 6.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 49,617,756 km

• M1: 106,962 km (0.026 R)
• M2: 415,433 km (0.089 R)
• M3: 811,568 km (0.069 R)
• M4: 1,824,346 km (0.115 R)
• M5: 2,641,450 km (0.09 R)
• M6: 2,974,754 km (0.1 R)
• M7: 3,620,717 km (0.115 R)
• M8: 4,147,003 km (0.103 R)
• M9: 4,849,963 km (0.11 R)
• M10: 7,819,630 km (0.12 R)
• M11: 9,601,939 km (0.079 R)
• M12: 10,308,640 km (0.082 R)
• M13: 12,734,968 km (0.118 R)
• M14: 13,587,675 km (0.097 R)
• M15: 16,143,256 km (0.095 R)
• M16: 18,056,014 km (0.04 R)
• M17: 19,196,100 km (0.087 R)
• M18: 19,849,693 km (0.082 R)
• M19: 21,829,471 km (0.092 R)
• M20: 23,195,599 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 696.1

Radius: 7.4

Gravity: 12.71 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 4.86 AU - 7.8 AU

Year: 10448 Days

Day: 20.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 49,617,756 km

• M1: 114,592 km (0.109 R)
• M2: 415,882 km (0.081 R)
• M3: 768,185 km (0.112 R)
• M4: 1,888,075 km (0.048 R)
• M5: 2,520,126 km (0.076 R)
• M6: 4,368,557 km (0.096 R)
• M7: 4,757,212 km (0.11 R)
• M8: 5,918,690 km (0.097 R)
• M9: 7,804,222 km (0.111 R)
• M10: 11,555,987 km (0.073 R)
• M11: 12,594,046 km (0.114 R)
• M12: 14,920,892 km (0.116 R)
• M13: 20,324,217 km (0.039 R)
• M14: 29,656,282 km (0.095 R)
• M15: 32,592,589 km (0.068 R)
• M16: 33,156,722 km (0.093 R)
• M17: 40,057,074 km (0.059 R)
• M18: 42,020,097 km (0.114 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 378 - 14,584 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit