🌌 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: 0.68

Radius: 0.86

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.49 AU - 0.53 AU

Year: 232 Days

Day: 16.2 Hours

Environment

Temp: -110 °C

Axial Tilt: 36 °

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: 0.52

Radius: 0.77

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.46 AU - 0.56 AU

Year: 232 Days

Day: 12.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 19.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,017,701 km

• M1: 19,897 km (0.072 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 155.6

Radius: 11

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.79 AU - 0.93 AU

Year: 507 Days

Day: 12.1 Hours

Environment

Temp: -147 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 51,017,701 km

• M1: 136,882 km (0.049 R)
• M2: 523,443 km (0.091 R)
• M3: 895,792 km (0.111 R)
• M4: 1,869,375 km (0.095 R)
• M5: 2,262,817 km (0.1 R)
• M6: 2,650,126 km (0.073 R)
• M7: 3,310,302 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 30.9

Radius: 10.3

Gravity: 0.29 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 3.07 AU - 4.67 AU

Year: 4841 Days

Day: 5.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 51,017,701 km

• M1: 143,913 km (0.062 R)
• M2: 625,170 km (0.054 R)
• M3: 1,427,014 km (0.089 R)
• M4: 3,926,346 km (0.115 R)
• M5: 5,836,561 km (0.08 R)
• M6: 8,246,134 km (0.102 R)
• M7: 10,180,135 km (0.088 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 35.5

Radius: 13.2

Gravity: 0.2 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 3.99 AU - 4.13 AU

Year: 5201 Days

Day: 11.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 51,017,701 km

• M1: 164,109 km (0.094 R)
• M2: 648,507 km (0.11 R)
• M3: 1,711,400 km (0.037 R)
• M4: 2,945,881 km (0.089 R)
• M5: 3,469,773 km (0.063 R)
• M6: 4,276,854 km (0.102 R)
• M7: 5,067,777 km (0.072 R)
• M8: 5,954,294 km (0.042 R)
• M9: 6,585,448 km (0.09 R)
• M10: 7,462,091 km (0.114 R)
• M11: 8,553,857 km (0.053 R)
• M12: 10,088,282 km (0.106 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 663.1

Radius: 7.5

Gravity: 11.79 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 8.12 AU - 9.18 AU

Year: 16175 Days

Day: 21.4 Hours

Environment

Temp: -238 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 51,017,701 km

• M1: 96,341 km (0.115 R)
• M2: 436,975 km (0.106 R)
• M3: 887,115 km (0.102 R)
• M4: 1,162,375 km (0.033 R)
• M5: 1,572,124 km (0.087 R)
• M6: 2,018,225 km (0.101 R)
• M7: 2,374,567 km (0.115 R)
• M8: 2,635,166 km (0.098 R)
• M9: 3,506,424 km (0.073 R)
• M10: 4,300,340 km (0.039 R)
• M11: 4,961,713 km (0.073 R)
• M12: 5,208,699 km (0.114 R)
• M13: 7,263,874 km (0.086 R)
• M14: 10,655,108 km (0.082 R)
• M15: 12,432,331 km (0.101 R)
• M16: 16,330,104 km (0.094 R)
• M17: 17,928,557 km (0.113 R)
• M18: 21,620,183 km (0.079 R)
• M19: 26,854,912 km (0.098 R)
• M20: 28,734,310 km (0.065 R)
• M21: 31,414,057 km (0.108 R)
• M22: 40,303,462 km (0.089 R)
• M23: 41,160,059 km (0.083 R)
• M24: 42,028,624 km (0.048 R)
• M25: 43,057,259 km (0.115 R)
• M26: 44,404,538 km (0.031 R)
• M27: 51,064,635 km (0.106 R)
• M28: 52,404,433 km (0.09 R)
• M29: 54,631,347 km (0.1 R)
• M30: 56,386,729 km (0.09 R)
• M31: 59,825,086 km (0.09 R)
• M32: 64,752,840 km (0.113 R)
• M33: 65,142,842 km (0.092 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 266.7

Radius: 3.2

Gravity: 26.04 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 8.17 AU - 10.13 AU

Year: 17598 Days

Day: 24.1 Hours

Environment

Temp: -234 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 51,017,701 km

• M1: 40,541 km (0.093 R)
• M2: 511,924 km (0.038 R)
• M3: 999,314 km (0.055 R)
• M4: 1,558,511 km (0.116 R)
• M5: 2,115,015 km (0.112 R)
• M6: 2,814,983 km (0.101 R)
• M7: 3,134,075 km (0.09 R)
• M8: 3,789,763 km (0.091 R)
• M9: 4,411,940 km (0.102 R)
• M10: 9,781,756 km (0.081 R)
• M11: 10,403,485 km (0.118 R)
• M12: 15,303,563 km (0.044 R)
• M13: 15,509,709 km (0.082 R)
• M14: 17,675,587 km (0.119 R)
• M15: 27,031,288 km (0.104 R)
• M16: 27,433,706 km (0.109 R)
• M17: 35,255,730 km (0.117 R)
• M18: 36,586,702 km (0.092 R)
• M19: 44,440,740 km (0.118 R)
• M20: 45,424,197 km (0.053 R)
• M21: 45,992,669 km (0.118 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 207 - 14,480 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit