🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.54

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.46 AU - 0.58 AU

Year: 242 Days

Day: 36.4 Hours

Environment

Temp: -118 °C

Axial Tilt: 14.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 26,670,210 km

• M1: 128,355 km (0.032 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.38

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.48 AU - 0.68 AU

Year: 285 Days

Day: 45.8 Hours

Environment

Temp: -117 °C

Axial Tilt: 39.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899.4

Radius: 13.7

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.58 AU - 0.84 AU

Year: 386 Days

Day: 13.1 Hours

Environment

Temp: -143 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 26,670,210 km

• M1: 170,392 km (0.088 R)
• M2: 643,420 km (0.069 R)
• M3: 1,188,256 km (0.069 R)
• M4: 1,763,310 km (0.095 R)
• M5: 2,381,897 km (0.116 R)
• M6: 3,120,612 km (0.11 R)
• M7: 4,034,206 km (0.045 R)
• M8: 4,504,093 km (0.108 R)
• M9: 4,979,664 km (0.114 R)
• M10: 5,773,431 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 520.7

Radius: 9

Gravity: 6.43 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.64 AU - 0.82 AU

Year: 403 Days

Day: 7.1 Hours

Environment

Temp: -137 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 26,670,210 km

• M1: 111,899 km (0.088 R)
• M2: 396,584 km (0.081 R)
• M3: 771,027 km (0.079 R)
• M4: 1,067,680 km (0.119 R)
• M5: 1,363,136 km (0.051 R)
• M6: 1,866,233 km (0.119 R)
• M7: 2,267,156 km (0.098 R)
• M8: 2,724,925 km (0.075 R)
• M9: 3,113,132 km (0.099 R)
• M10: 4,001,444 km (0.074 R)
• M11: 4,686,452 km (0.076 R)
• M12: 5,094,555 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899.3

Radius: 13.1

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.62 AU - 0.88 AU

Year: 419 Days

Day: 11.9 Hours

Environment

Temp: -140 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 26,670,210 km

• M1: 163,062 km (0.03 R)
• M2: 623,524 km (0.067 R)
• M3: 1,071,570 km (0.095 R)
• M4: 1,713,644 km (0.114 R)
• M5: 2,252,944 km (0.106 R)
• M6: 2,969,967 km (0.117 R)
• M7: 3,641,511 km (0.057 R)
• M8: 4,297,947 km (0.088 R)
• M9: 4,768,432 km (0.086 R)
• M10: 5,606,928 km (0.112 R)
• M11: 6,025,952 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 106.7

Radius: 13.8

Gravity: 0.56 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.91 AU - 1.29 AU

Year: 745 Days

Day: 12.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 15.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 26,670,210 km

• M1: 191,036 km (0.112 R)
• M2: 785,987 km (0.117 R)
• M3: 1,493,286 km (0.115 R)
• M4: 2,025,406 km (0.092 R)
• M5: 2,832,336 km (0.112 R)
• M6: 3,385,699 km (0.1 R)
• M7: 4,083,723 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 629.1

Radius: 9.8

Gravity: 6.55 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 1.49 AU - 2.21 AU

Year: 1625 Days

Day: 5.5 Hours

Environment

Temp: -176 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 26,670,210 km

• M1: 121,922 km (0.109 R)
• M2: 500,554 km (0.103 R)
• M3: 975,827 km (0.068 R)
• M4: 1,531,433 km (0.115 R)
• M5: 2,055,325 km (0.112 R)
• M6: 2,777,135 km (0.095 R)
• M7: 3,430,878 km (0.115 R)
• M8: 3,968,383 km (0.032 R)
• M9: 5,318,803 km (0.035 R)
• M10: 6,039,715 km (0.061 R)
• M11: 6,448,566 km (0.111 R)
• M12: 6,824,655 km (0.071 R)
• M13: 7,215,255 km (0.108 R)
• M14: 8,898,680 km (0.048 R)
• M15: 9,460,719 km (0.086 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 203.1

Radius: 9.8

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 2.29 AU - 2.53 AU

Year: 2416 Days

Day: 11.4 Hours

Environment

Temp: -188 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 26,670,210 km

• M1: 122,969 km (0.082 R)
• M2: 433,834 km (0.101 R)
• M3: 822,339 km (0.079 R)
• M4: 1,308,981 km (0.104 R)
• M5: 1,808,339 km (0.079 R)
• M6: 2,760,230 km (0.09 R)
• M7: 3,493,110 km (0.118 R)
• M8: 3,830,453 km (0.03 R)
• M9: 4,441,561 km (0.086 R)
• M10: 4,976,224 km (0.105 R)
• M11: 5,574,615 km (0.11 R)
• M12: 5,969,703 km (0.085 R)
• M13: 6,597,416 km (0.105 R)
• M14: 8,430,438 km (0.09 R)
• M15: 9,011,327 km (0.058 R)
• M16: 9,711,894 km (0.042 R)
• M17: 10,027,695 km (0.091 R)
• M18: 10,679,942 km (0.084 R)
• M19: 11,464,732 km (0.088 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 589

Radius: 12.9

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 2.88 AU - 3.18 AU

Year: 3405 Days

Day: 11.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 153.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 26,670,210 km

• M1: 166,802 km (0.036 R)
• M2: 639,680 km (0.086 R)
• M3: 1,400,236 km (0.033 R)
• M4: 2,118,156 km (0.054 R)
• M5: 2,820,668 km (0.061 R)
• M6: 3,539,635 km (0.081 R)
• M7: 4,808,824 km (0.097 R)
• M8: 5,918,092 km (0.097 R)
• M9: 6,708,717 km (0.079 R)
• M10: 9,358,843 km (0.108 R)
• M11: 9,847,429 km (0.073 R)
• M12: 12,551,561 km (0.075 R)
• M13: 18,140,387 km (0.086 R)
• M14: 21,507,387 km (0.076 R)

Planet 10 - Gas Giant

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 310.6

Radius: 12.7

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 3.39 AU - 5.61 AU

Year: 6164 Days

Day: 12.6 Hours

Environment

Temp: -216 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 26,670,210 km

• M1: 158,125 km (0.032 R)
• M2: 562,338 km (0.052 R)
• M3: 1,002,455 km (0.116 R)
• M4: 1,468,453 km (0.052 R)
• M5: 2,755,443 km (0.074 R)
• M6: 3,182,545 km (0.057 R)
• M7: 4,473,425 km (0.035 R)
• M8: 5,171,898 km (0.062 R)
• M9: 5,603,039 km (0.101 R)
• M10: 6,630,626 km (0.044 R)
• M11: 7,305,313 km (0.053 R)
• M12: 7,849,550 km (0.082 R)
• M13: 8,531,118 km (0.099 R)
• M14: 8,943,410 km (0.084 R)
• M15: 9,447,854 km (0.101 R)
• M16: 9,889,616 km (0.07 R)
• M17: 10,642,093 km (0.078 R)
• M18: 11,120,657 km (0.08 R)
• M19: 11,796,241 km (0.103 R)
• M20: 13,580,046 km (0.099 R)
• M21: 14,195,492 km (0.114 R)
• M22: 15,648,386 km (0.112 R)
• M23: 17,198,370 km (0.116 R)
• M24: 19,037,975 km (0.071 R)
• M25: 19,485,422 km (0.078 R)
• M26: 20,005,424 km (0.096 R)
• M27: 22,960,730 km (0.118 R)
• M28: 23,687,626 km (0.111 R)
• M29: 24,580,127 km (0.086 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 385 - 16,044 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit