🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.53

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.48 AU - 0.7 AU

Year: 288 Days

Day: 18 Hours

Environment

Temp: -127 °C

Axial Tilt: 32.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.8

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.57 AU - 0.75 AU

Year: 341 Days

Day: 43.4 Hours

Environment

Temp: -132 °C

Axial Tilt: 13.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 781.6

Radius: 12.7

Gravity: 4.85 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.67 AU - 1.03 AU

Year: 498 Days

Day: 12.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 12,182,111 km

• M1: 157,975 km (0.073 R)
• M2: 655,837 km (0.09 R)
• M3: 1,736,682 km (0.086 R)
• M4: 2,204,325 km (0.117 R)
• M5: 2,620,207 km (0.11 R)
• M6: 3,135,272 km (0.064 R)
• M7: 3,562,374 km (0.074 R)
• M8: 4,565,278 km (0.085 R)
• M9: 5,383,728 km (0.112 R)
• M10: 5,927,516 km (0.114 R)
• M11: 6,354,618 km (0.028 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 92

Radius: 9.1

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.85 AU - 0.97 AU

Year: 552 Days

Day: 13.4 Hours

Environment

Temp: -161 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 12,182,111 km

• M1: 113,246 km (0.095 R)
• M2: 446,400 km (0.106 R)
• M3: 734,526 km (0.115 R)
• M4: 1,300,005 km (0.034 R)
• M5: 1,692,251 km (0.115 R)
• M6: 2,054,727 km (0.1 R)
• M7: 2,616,467 km (0.106 R)
• M8: 2,993,154 km (0.049 R)
• M9: 3,405,745 km (0.041 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 550.7

Radius: 12.4

Gravity: 3.58 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.02 AU - 1.32 AU

Year: 805 Days

Day: 14.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 12,182,111 km

• M1: 154,535 km (0.054 R)
• M2: 1,000,660 km (0.117 R)
• M3: 1,445,115 km (0.054 R)
• M4: 2,251,598 km (0.092 R)
• M5: 2,672,716 km (0.117 R)
• M6: 3,648,991 km (0.11 R)
• M7: 4,748,835 km (0.108 R)
• M8: 5,161,127 km (0.051 R)
• M9: 6,277,725 km (0.071 R)
• M10: 7,435,164 km (0.109 R)
• M11: 8,064,971 km (0.057 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 338.1

Radius: 8.7

Gravity: 4.47 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 1.26 AU - 1.6 AU

Year: 1087 Days

Day: 11.7 Hours

Environment

Temp: -166 °C

Axial Tilt: 110.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 12,182,111 km

• M1: 108,159 km (0.115 R)
• M2: 384,766 km (0.098 R)
• M3: 726,148 km (0.046 R)
• M4: 1,038,808 km (0.058 R)
• M5: 1,405,771 km (0.055 R)
• M6: 2,321,011 km (0.062 R)
• M7: 2,694,108 km (0.106 R)
• M8: 3,068,701 km (0.098 R)
• M9: 3,561,177 km (0.102 R)
• M10: 4,059,338 km (0.105 R)
• M11: 4,927,754 km (0.113 R)
• M12: 7,367,994 km (0.098 R)
• M13: 8,629,254 km (0.075 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 524.8

Radius: 13.3

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 2.73 AU - 3.11 AU

Year: 3173 Days

Day: 14.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 12,182,111 km

• M1: 165,455 km (0.075 R)
• M2: 648,806 km (0.105 R)
• M3: 1,590,973 km (0.064 R)
• M4: 2,096,913 km (0.049 R)
• M5: 2,664,787 km (0.033 R)
• M6: 3,178,207 km (0.068 R)
• M7: 3,952,675 km (0.071 R)
• M8: 4,988,341 km (0.039 R)
• M9: 6,472,501 km (0.104 R)
• M10: 7,226,176 km (0.089 R)
• M11: 7,687,236 km (0.073 R)
• M12: 8,332,601 km (0.1 R)
• M13: 9,332,214 km (0.1 R)
• M14: 10,142,885 km (0.116 R)
• M15: 11,946,736 km (0.098 R)
• M16: 14,576,368 km (0.065 R)
• M17: 15,115,518 km (0.12 R)
• M18: 16,548,068 km (0.047 R)
• M19: 17,351,857 km (0.108 R)
• M20: 18,237,776 km (0.099 R)
• M21: 19,328,793 km (0.118 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 53.6

Radius: 14.4

Gravity: 0.26 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 3.14 AU - 4.32 AU

Year: 4580 Days

Day: 9.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 12,182,111 km

• M1: 179,368 km (0.079 R)
• M2: 976,425 km (0.113 R)
• M3: 1,441,226 km (0.082 R)
• M4: 4,208,487 km (0.09 R)
• M5: 5,510,737 km (0.098 R)
• M6: 6,773,044 km (0.112 R)
• M7: 7,734,060 km (0.112 R)
• M8: 9,404,321 km (0.07 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 377 - 17,090 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit