🌌 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: 4.61

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.57 AU - 0.61 AU

Year: 293 Days

Day: 45.4 Hours

Environment

Temp: -135 °C

Axial Tilt: 42.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 522.6

Radius: 14.7

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.93 AU - 1.01 AU

Year: 617 Days

Day: 14.2 Hours

Environment

Temp: -161 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 38,342,148 km

• M1: 182,809 km (0.058 R)
• M2: 773,271 km (0.059 R)
• M3: 1,434,793 km (0.097 R)
• M4: 2,193,254 km (0.119 R)
• M5: 2,666,732 km (0.097 R)
• M6: 4,255,311 km (0.036 R)
• M7: 4,811,367 km (0.086 R)
• M8: 5,552,923 km (0.045 R)
• M9: 6,181,683 km (0.054 R)
• M10: 6,738,337 km (0.054 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 920.4

Radius: 9.7

Gravity: 9.78 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.9 AU - 1.26 AU

Year: 725 Days

Day: 12.5 Hours

Environment

Temp: -173 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 38,342,148 km

• M1: 121,623 km (0.065 R)
• M2: 543,938 km (0.115 R)
• M3: 1,050,626 km (0.094 R)
• M4: 1,680,134 km (0.105 R)
• M5: 2,346,443 km (0.097 R)
• M6: 2,837,273 km (0.072 R)
• M7: 3,368,046 km (0.111 R)
• M8: 4,214,621 km (0.103 R)
• M9: 4,818,547 km (0.052 R)
• M10: 5,233,981 km (0.079 R)
• M11: 5,653,453 km (0.088 R)
• M12: 5,972,545 km (0.09 R)
• M13: 6,282,662 km (0.093 R)
• M14: 6,757,037 km (0.071 R)
• M15: 7,371,734 km (0.107 R)
• M16: 8,274,109 km (0.084 R)
• M17: 9,193,836 km (0.063 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 964.9

Radius: 13.8

Gravity: 5.07 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.57 AU - 1.75 AU

Year: 1381 Days

Day: 8.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 38,342,148 km

• M1: 171,738 km (0.113 R)
• M2: 800,797 km (0.059 R)
• M3: 1,331,122 km (0.081 R)
• M4: 1,891,964 km (0.078 R)
• M5: 2,531,495 km (0.117 R)
• M6: 3,144,398 km (0.101 R)
• M7: 4,066,818 km (0.117 R)
• M8: 4,651,147 km (0.111 R)
• M9: 5,141,679 km (0.111 R)
• M10: 7,006,715 km (0.099 R)
• M11: 8,429,242 km (0.064 R)
• M12: 9,288,083 km (0.045 R)
• M13: 10,204,520 km (0.11 R)
• M14: 11,728,323 km (0.076 R)
• M15: 14,228,104 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 857

Radius: 10.8

Gravity: 7.35 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 3.64 AU - 4 AU

Year: 4821 Days

Day: 13 Hours

Environment

Temp: -219 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 38,342,148 km

• M1: 134,339 km (0.119 R)
• M2: 499,358 km (0.093 R)
• M3: 913,445 km (0.079 R)
• M4: 1,775,278 km (0.085 R)
• M5: 2,510,551 km (0.052 R)
• M6: 4,110,650 km (0.07 R)
• M7: 5,746,952 km (0.097 R)
• M8: 6,367,783 km (0.114 R)
• M9: 6,896,163 km (0.119 R)
• M10: 8,003,187 km (0.09 R)
• M11: 11,308,701 km (0.106 R)
• M12: 11,789,509 km (0.106 R)
• M13: 12,334,195 km (0.111 R)
• M14: 12,792,264 km (0.056 R)
• M15: 13,209,043 km (0.054 R)
• M16: 13,960,025 km (0.112 R)
• M17: 16,142,358 km (0.114 R)
• M18: 16,938,518 km (0.116 R)
• M19: 19,348,091 km (0.116 R)
• M20: 19,690,371 km (0.065 R)
• M21: 21,829,770 km (0.118 R)
• M22: 22,200,773 km (0.053 R)
• M23: 23,416,555 km (0.088 R)
• M24: 23,883,749 km (0.101 R)
• M25: 25,568,071 km (0.119 R)
• M26: 26,146,716 km (0.116 R)
• M27: 27,588,391 km (0.111 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 117.7

Radius: 5.1

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 8.37 AU - 9.51 AU

Year: 17259 Days

Day: 18.7 Hours

Environment

Temp: -226 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 38,342,148 km

• M1: 65,225 km (0.102 R)
• M2: 325,974 km (0.104 R)
• M3: 842,236 km (0.102 R)
• M4: 2,114,566 km (0.104 R)
• M5: 2,568,745 km (0.107 R)
• M6: 2,899,356 km (0.096 R)
• M7: 3,692,973 km (0.092 R)
• M8: 4,037,647 km (0.083 R)
• M9: 5,508,044 km (0.105 R)
• M10: 5,826,987 km (0.04 R)
• M11: 6,536,829 km (0.118 R)
• M12: 7,532,103 km (0.116 R)
• M13: 7,726,880 km (0.098 R)
• M14: 8,086,064 km (0.102 R)
• M15: 8,331,554 km (0.068 R)
• M16: 10,479,032 km (0.108 R)
• M17: 18,722,174 km (0.111 R)
• M18: 19,080,012 km (0.092 R)
• M19: 22,428,760 km (0.096 R)
• M20: 27,875,768 km (0.054 R)
• M21: 29,099,778 km (0.045 R)
• M22: 30,457,678 km (0.1 R)
• M23: 37,430,734 km (0.1 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 417 - 16,903 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit