🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.96

Radius: 1.31

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.45 AU - 0.65 AU

Year: 268 Days

Day: 26.5 Hours

Environment

Temp: -116 °C

Axial Tilt: 13.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.39

Radius: 0.69

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.63 AU - 0.65 AU

Year: 336 Days

Day: 26 Hours

Environment

Temp: -122 °C

Axial Tilt: 9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.71

Radius: 0.87

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.59 AU - 0.69 AU

Year: 336 Days

Day: 37.7 Hours

Environment

Temp: -126 °C

Axial Tilt: 1.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 955

Radius: 10

Gravity: 9.55 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.82 AU - 1.1 AU

Year: 617 Days

Day: 13.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 46,801,466 km

• M1: 124,615 km (0.104 R)
• M2: 442,361 km (0.072 R)
• M3: 761,154 km (0.109 R)
• M4: 1,262,606 km (0.055 R)
• M5: 2,145,084 km (0.093 R)
• M6: 2,535,834 km (0.028 R)
• M7: 2,913,568 km (0.089 R)
• M8: 3,263,328 km (0.1 R)
• M9: 3,599,325 km (0.075 R)
• M10: 4,732,828 km (0.038 R)
• M11: 5,680,530 km (0.032 R)
• M12: 6,728,613 km (0.072 R)
• M13: 7,164,392 km (0.067 R)
• M14: 7,924,648 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 40.6

Radius: 8.6

Gravity: 0.55 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.75 AU - 1.81 AU

Year: 1558 Days

Day: 14.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 46,801,466 km

• M1: 106,962 km (0.066 R)
• M2: 423,960 km (0.116 R)
• M3: 857,046 km (0.086 R)
• M4: 1,583,793 km (0.062 R)
• M5: 2,213,001 km (0.042 R)
• M6: 3,398,864 km (0.083 R)
• M7: 4,726,694 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 385

Radius: 14.5

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.72 AU - 2.1 AU

Year: 1732 Days

Day: 7 Hours

Environment

Temp: -195 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 46,801,466 km

• M1: 180,265 km (0.07 R)
• M2: 876,793 km (0.116 R)
• M3: 1,587,533 km (0.093 R)
• M4: 2,151,367 km (0.068 R)
• M5: 3,193,765 km (0.103 R)
• M6: 3,987,830 km (0.088 R)
• M7: 4,588,017 km (0.115 R)
• M8: 5,926,768 km (0.064 R)
• M9: 9,671,054 km (0.103 R)
• M10: 10,399,296 km (0.112 R)
• M11: 11,542,373 km (0.068 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.4

Radius: 10.5

Gravity: 8.21 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 1.95 AU - 2.55 AU

Year: 2214 Days

Day: 6.2 Hours

Environment

Temp: -191 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 46,801,466 km

• M1: 130,599 km (0.081 R)
• M2: 587,321 km (0.069 R)
• M3: 1,138,889 km (0.053 R)
• M4: 1,619,247 km (0.11 R)
• M5: 1,991,746 km (0.105 R)
• M6: 2,637,261 km (0.111 R)
• M7: 4,158,372 km (0.117 R)
• M8: 4,709,790 km (0.051 R)
• M9: 5,578,056 km (0.103 R)
• M10: 6,384,837 km (0.096 R)
• M11: 7,003,275 km (0.096 R)
• M12: 7,692,023 km (0.083 R)
• M13: 8,197,365 km (0.069 R)
• M14: 8,826,125 km (0.059 R)
• M15: 9,380,235 km (0.054 R)
• M16: 10,367,880 km (0.103 R)
• M17: 11,342,810 km (0.101 R)
• M18: 13,250,183 km (0.067 R)
• M19: 14,445,021 km (0.055 R)
• M20: 16,063,071 km (0.116 R)
• M21: 16,784,881 km (0.036 R)
• M22: 17,636,093 km (0.108 R)
• M23: 19,080,311 km (0.108 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 110.7

Radius: 10.2

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 2.45 AU - 3.93 AU

Year: 3738 Days

Day: 9.1 Hours

Environment

Temp: -207 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 46,801,466 km

• M1: 126,859 km (0.06 R)
• M2: 444,156 km (0.04 R)
• M3: 801,097 km (0.072 R)
• M4: 1,441,675 km (0.09 R)
• M5: 1,992,195 km (0.088 R)
• M6: 2,612,278 km (0.087 R)
• M7: 2,996,745 km (0.106 R)
• M8: 3,967,635 km (0.12 R)
• M9: 4,421,515 km (0.107 R)
• M10: 5,587,181 km (0.073 R)
• M11: 6,373,767 km (0.081 R)
• M12: 7,127,740 km (0.105 R)
• M13: 7,499,341 km (0.113 R)
• M14: 10,340,354 km (0.106 R)
• M15: 13,148,606 km (0.097 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 852.8

Radius: 11

Gravity: 7.05 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 4.3 AU - 6.86 AU

Year: 8647 Days

Day: 7.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 46,801,466 km

• M1: 138,677 km (0.08 R)
• M2: 689,945 km (0.089 R)
• M3: 1,513,631 km (0.12 R)
• M4: 2,657,157 km (0.096 R)
• M5: 3,145,744 km (0.102 R)
• M6: 3,496,252 km (0.093 R)
• M7: 4,360,778 km (0.111 R)
• M8: 5,694,293 km (0.113 R)
• M9: 6,850,834 km (0.118 R)
• M10: 7,566,810 km (0.077 R)
• M11: 8,028,319 km (0.091 R)
• M12: 10,780,920 km (0.094 R)
• M13: 12,028,866 km (0.12 R)
• M14: 12,834,151 km (0.103 R)
• M15: 13,431,046 km (0.119 R)
• M16: 14,424,675 km (0.096 R)
• M17: 16,838,587 km (0.079 R)
• M18: 21,774,568 km (0.112 R)
• M19: 27,795,135 km (0.074 R)
• M20: 28,492,410 km (0.112 R)
• M21: 30,654,249 km (0.103 R)
• M22: 33,479,555 km (0.095 R)
• M23: 35,650,818 km (0.075 R)
• M24: 37,793,060 km (0.102 R)
• M25: 39,019,613 km (0.112 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 541 - 20,370 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit