🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.01

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.45 AU - 0.69 AU

Year: 278 Days

Day: 29.4 Hours

Environment

Temp: -129 °C

Axial Tilt: 26 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 210.7

Radius: 12.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.73 AU - 1.01 AU

Year: 524 Days

Day: 5.5 Hours

Environment

Temp: -151 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 36,703,520 km

• M1: 157,975 km (0.101 R)
• M2: 711,039 km (0.078 R)
• M3: 1,126,173 km (0.113 R)
• M4: 1,683,574 km (0.055 R)
• M5: 2,092,575 km (0.049 R)
• M6: 2,551,242 km (0.087 R)
• M7: 3,399,013 km (0.116 R)
• M8: 3,930,684 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 281.2

Radius: 8.6

Gravity: 3.8 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.15 AU - 1.49 AU

Year: 979 Days

Day: 11.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,703,520 km

• M1: 106,962 km (0.064 R)
• M2: 457,919 km (0.097 R)
• M3: 1,308,084 km (0.093 R)
• M4: 2,473,750 km (0.091 R)
• M5: 2,788,654 km (0.073 R)
• M6: 3,069,599 km (0.06 R)
• M7: 3,688,784 km (0.055 R)
• M8: 4,250,973 km (0.107 R)
• M9: 4,770,377 km (0.119 R)
• M10: 5,261,208 km (0.042 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 174.6

Radius: 14.6

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 1.5 AU - 2.44 AU

Year: 1785 Days

Day: 9.6 Hours

Environment

Temp: -184 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 36,703,520 km

• M1: 181,612 km (0.118 R)
• M2: 637,586 km (0.092 R)
• M3: 1,194,838 km (0.105 R)
• M4: 1,868,777 km (0.112 R)
• M5: 2,568,147 km (0.085 R)
• M6: 3,410,532 km (0.118 R)
• M7: 4,043,930 km (0.071 R)
• M8: 4,599,536 km (0.117 R)
• M9: 5,113,554 km (0.106 R)
• M10: 5,666,019 km (0.104 R)
• M11: 6,580,661 km (0.03 R)
• M12: 7,471,815 km (0.07 R)
• M13: 9,052,766 km (0.048 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 893.1

Radius: 10.4

Gravity: 8.26 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 2.28 AU - 3.74 AU

Year: 3372 Days

Day: 5.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 36,703,520 km

• M1: 129,402 km (0.092 R)
• M2: 465,249 km (0.061 R)
• M3: 810,820 km (0.079 R)
• M4: 2,094,221 km (0.088 R)
• M5: 2,522,370 km (0.083 R)
• M6: 3,209,024 km (0.048 R)
• M7: 3,637,323 km (0.1 R)
• M8: 4,081,479 km (0.107 R)
• M9: 4,852,656 km (0.094 R)
• M10: 5,365,627 km (0.113 R)
• M11: 6,202,777 km (0.107 R)
• M12: 6,964,828 km (0.099 R)
• M13: 7,960,551 km (0.096 R)
• M14: 9,549,430 km (0.082 R)
• M15: 10,109,675 km (0.109 R)
• M16: 10,991,105 km (0.117 R)
• M17: 12,291,410 km (0.078 R)
• M18: 12,715,071 km (0.095 R)
• M19: 15,683,542 km (0.09 R)
• M20: 17,387,162 km (0.097 R)
• M21: 19,846,252 km (0.044 R)
• M22: 20,958,362 km (0.104 R)
• M23: 22,738,876 km (0.1 R)
• M24: 23,593,679 km (0.068 R)
• M25: 25,216,516 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 959.3

Radius: 12.5

Gravity: 6.14 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 5.26 AU - 6.66 AU

Year: 9395 Days

Day: 10.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 36,703,520 km

• M1: 155,432 km (0.086 R)
• M2: 900,430 km (0.089 R)
• M3: 1,773,782 km (0.088 R)
• M4: 2,335,522 km (0.101 R)
• M5: 2,753,199 km (0.109 R)
• M6: 3,927,991 km (0.076 R)
• M7: 5,446,110 km (0.085 R)
• M8: 7,790,758 km (0.054 R)
• M9: 9,603,286 km (0.093 R)
• M10: 12,084,965 km (0.048 R)
• M11: 13,101,782 km (0.057 R)
• M12: 13,981,417 km (0.091 R)
• M13: 16,210,276 km (0.116 R)
• M14: 17,372,202 km (0.116 R)
• M15: 18,356,556 km (0.113 R)
• M16: 18,823,152 km (0.037 R)
• M17: 20,602,469 km (0.049 R)
• M18: 21,361,828 km (0.055 R)
• M19: 27,714,801 km (0.045 R)
• M20: 30,770,337 km (0.106 R)
• M21: 34,277,809 km (0.075 R)
• M22: 34,986,304 km (0.05 R)
• M23: 38,295,559 km (0.077 R)
• M24: 39,314,769 km (0.027 R)
• M25: 43,573,521 km (0.084 R)
• M26: 47,836,612 km (0.039 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 119.7

Radius: 6

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 8.09 AU - 8.93 AU

Year: 16029 Days

Day: 18.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 36,703,520 km

• M1: 74,649 km (0.038 R)
• M2: 314,156 km (0.116 R)
• M3: 967,898 km (0.033 R)
• M4: 1,755,232 km (0.108 R)
• M5: 2,617,664 km (0.08 R)
• M6: 3,479,646 km (0.119 R)
• M7: 4,463,552 km (0.071 R)
• M8: 4,848,168 km (0.119 R)
• M9: 5,195,235 km (0.1 R)
• M10: 7,712,817 km (0.088 R)
• M11: 11,591,890 km (0.063 R)
• M12: 15,159,500 km (0.045 R)
• M13: 15,404,093 km (0.12 R)
• M14: 16,473,269 km (0.115 R)
• M15: 19,396,860 km (0.087 R)
• M16: 23,863,703 km (0.108 R)
• M17: 24,111,736 km (0.086 R)
• M18: 30,111,209 km (0.097 R)
• M19: 32,481,587 km (0.071 R)
• M20: 34,024,390 km (0.09 R)
• M21: 35,723,373 km (0.076 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 281 - 15,721 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit