🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.11

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.52 AU - 0.6 AU

Year: 271 Days

Day: 31.7 Hours

Environment

Temp: -113 °C

Axial Tilt: 36.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,510,034 km

• M1: 180,265 km (0.029 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.71

Radius: 0.87

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.45 AU - 0.73 AU

Year: 293 Days

Day: 40.3 Hours

Environment

Temp: -119 °C

Axial Tilt: 11.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,510,034 km

• M1: 58,792 km (0.091 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 993

Radius: 13

Gravity: 5.88 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.66 AU - 0.9 AU

Year: 445 Days

Day: 10.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 39,510,034 km

• M1: 161,715 km (0.101 R)
• M2: 603,328 km (0.107 R)
• M3: 1,007,841 km (0.083 R)
• M4: 1,458,878 km (0.085 R)
• M5: 1,937,442 km (0.115 R)
• M6: 2,374,417 km (0.107 R)
• M7: 2,866,744 km (0.11 R)
• M8: 3,390,037 km (0.061 R)
• M9: 3,908,544 km (0.107 R)
• M10: 4,801,344 km (0.116 R)
• M11: 5,457,779 km (0.054 R)
• M12: 6,651,869 km (0.068 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 244.6

Radius: 9.4

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.84 AU - 1.24 AU

Year: 685 Days

Day: 5.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 22.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 39,510,034 km

• M1: 116,836 km (0.083 R)
• M2: 535,860 km (0.116 R)
• M3: 965,804 km (0.097 R)
• M4: 1,285,345 km (0.076 R)
• M5: 1,585,289 km (0.101 R)
• M6: 2,412,864 km (0.064 R)
• M7: 2,834,431 km (0.112 R)
• M8: 3,293,098 km (0.113 R)
• M9: 3,877,427 km (0.12 R)
• M10: 4,851,758 km (0.097 R)
• M11: 5,575,812 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 604.8

Radius: 11.7

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 1.02 AU - 1.2 AU

Year: 755 Days

Day: 14.9 Hours

Environment

Temp: -154 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 39,510,034 km

• M1: 145,559 km (0.118 R)
• M2: 642,822 km (0.09 R)
• M3: 1,010,384 km (0.052 R)
• M4: 1,444,667 km (0.078 R)
• M5: 1,923,679 km (0.07 R)
• M6: 2,518,630 km (0.078 R)
• M7: 2,960,991 km (0.073 R)
• M8: 3,468,726 km (0.047 R)
• M9: 4,215,369 km (0.071 R)
• M10: 5,757,872 km (0.103 R)
• M11: 7,307,258 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 519.9

Radius: 8.1

Gravity: 7.92 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 1.79 AU - 2.05 AU

Year: 1718 Days

Day: 11.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 39,510,034 km

• M1: 100,829 km (0.048 R)
• M2: 407,953 km (0.078 R)
• M3: 670,797 km (0.076 R)
• M4: 1,355,656 km (0.091 R)
• M5: 1,737,130 km (0.092 R)
• M6: 2,008,202 km (0.057 R)
• M7: 2,897,112 km (0.07 R)
• M8: 3,438,058 km (0.097 R)
• M9: 4,335,945 km (0.119 R)
• M10: 4,740,009 km (0.053 R)
• M11: 5,211,092 km (0.089 R)
• M12: 5,690,553 km (0.119 R)
• M13: 6,151,614 km (0.098 R)
• M14: 8,870,705 km (0.071 R)
• M15: 9,747,049 km (0.101 R)
• M16: 11,562,120 km (0.061 R)
• M17: 11,965,286 km (0.062 R)
• M18: 12,492,021 km (0.096 R)
• M19: 12,916,579 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 289.1

Radius: 10.2

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.83 AU - 2.07 AU

Year: 1758 Days

Day: 8.4 Hours

Environment

Temp: -187 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 39,510,034 km

• M1: 126,859 km (0.091 R)
• M2: 465,698 km (0.051 R)
• M3: 788,680 km (0.079 R)
• M4: 1,227,002 km (0.117 R)
• M5: 1,606,831 km (0.071 R)
• M6: 2,107,236 km (0.064 R)
• M7: 3,106,849 km (0.106 R)
• M8: 3,604,112 km (0.089 R)
• M9: 4,520,848 km (0.114 R)
• M10: 5,711,796 km (0.097 R)
• M11: 7,100,364 km (0.065 R)
• M12: 7,992,266 km (0.083 R)
• M13: 8,396,779 km (0.115 R)
• M14: 8,814,755 km (0.073 R)
• M15: 10,756,984 km (0.099 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 200

Radius: 7.5

Gravity: 3.56 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 6.62 AU - 8.82 AU

Year: 13850 Days

Day: 21.7 Hours

Environment

Temp: -222 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 39,510,034 km

• M1: 93,349 km (0.114 R)
• M2: 604,824 km (0.067 R)
• M3: 1,783,207 km (0.112 R)
• M4: 2,057,719 km (0.11 R)
• M5: 3,034,443 km (0.072 R)
• M6: 4,845,176 km (0.055 R)
• M7: 5,079,745 km (0.119 R)
• M8: 6,369,279 km (0.057 R)
• M9: 6,904,839 km (0.073 R)
• M10: 8,065,719 km (0.057 R)
• M11: 9,670,455 km (0.082 R)
• M12: 12,432,630 km (0.115 R)
• M13: 16,195,765 km (0.098 R)
• M14: 16,523,534 km (0.098 R)
• M15: 24,643,407 km (0.092 R)
• M16: 26,590,124 km (0.118 R)
• M17: 27,880,854 km (0.054 R)
• M18: 29,601,230 km (0.068 R)
• M19: 33,357,483 km (0.087 R)
• M20: 33,675,229 km (0.064 R)
• M21: 34,424,564 km (0.063 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 255 - 11,346 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit