🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.54 AU - 0.78 AU

Year: 352 Days

Day: 23 Hours

Environment

Temp: -130 °C

Axial Tilt: 36.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 273.9

Radius: 9.9

Gravity: 2.79 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 0.7 AU - 0.72 AU

Year: 392 Days

Day: 5.5 Hours

Environment

Temp: -132 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 49,811,591 km

• M1: 123,119 km (0.113 R)
• M2: 437,574 km (0.083 R)
• M3: 774,019 km (0.114 R)
• M4: 1,107,323 km (0.109 R)
• M5: 1,520,812 km (0.074 R)
• M6: 1,838,857 km (0.12 R)
• M7: 2,194,002 km (0.096 R)
• M8: 3,016,043 km (0.067 R)
• M9: 3,557,138 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 59.4

Radius: 12.8

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 1.42 AU - 1.84 AU

Year: 1365 Days

Day: 6.3 Hours

Environment

Temp: -179 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 49,811,591 km

• M1: 159,172 km (0.116 R)
• M2: 606,021 km (0.118 R)
• M3: 1,058,704 km (0.12 R)
• M4: 1,565,392 km (0.076 R)
• M5: 2,276,730 km (0.068 R)
• M6: 2,968,171 km (0.118 R)
• M7: 3,480,544 km (0.105 R)
• M8: 4,077,739 km (0.085 R)
• M9: 5,209,746 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.8

Radius: 12.2

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 1.71 AU - 2.17 AU

Year: 1773 Days

Day: 14.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 49,811,591 km

• M1: 151,842 km (0.06 R)
• M2: 554,410 km (0.065 R)
• M3: 960,119 km (0.062 R)
• M4: 3,309,254 km (0.104 R)
• M5: 3,703,445 km (0.09 R)
• M6: 4,373,494 km (0.061 R)
• M7: 5,058,951 km (0.074 R)
• M8: 6,799,373 km (0.077 R)
• M9: 8,035,949 km (0.07 R)
• M10: 8,692,683 km (0.105 R)
• M11: 11,203,833 km (0.115 R)
• M12: 11,721,143 km (0.093 R)
• M13: 12,923,760 km (0.112 R)
• M14: 13,451,990 km (0.05 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 566.6

Radius: 14.7

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 1.99 AU - 2.27 AU

Year: 2039 Days

Day: 12.8 Hours

Environment

Temp: -187 °C

Axial Tilt: 54.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 49,811,591 km

• M1: 182,809 km (0.096 R)
• M2: 726,447 km (0.04 R)
• M3: 1,513,182 km (0.051 R)
• M4: 2,040,066 km (0.093 R)
• M5: 2,635,765 km (0.081 R)
• M6: 3,943,998 km (0.104 R)
• M7: 5,558,159 km (0.073 R)
• M8: 7,298,731 km (0.111 R)
• M9: 7,923,750 km (0.117 R)
• M10: 8,522,740 km (0.077 R)
• M11: 9,913,701 km (0.112 R)
• M12: 10,433,105 km (0.106 R)
• M13: 11,451,268 km (0.104 R)
• M14: 11,984,734 km (0.042 R)
• M15: 12,495,013 km (0.082 R)
• M16: 14,243,512 km (0.099 R)
• M17: 15,131,226 km (0.118 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 604.7

Radius: 4.1

Gravity: 35.97 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 6.15 AU - 7.17 AU

Year: 11275 Days

Day: 20 Hours

Environment

Temp: -228 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 49,811,591 km

• M1: 51,013 km (0.057 R)
• M2: 236,365 km (0.107 R)
• M3: 492,327 km (0.073 R)
• M4: 987,496 km (0.077 R)
• M5: 1,202,916 km (0.118 R)
• M6: 1,341,444 km (0.087 R)
• M7: 1,871,918 km (0.086 R)
• M8: 2,353,324 km (0.059 R)
• M9: 2,591,933 km (0.089 R)
• M10: 2,759,931 km (0.116 R)
• M11: 2,890,680 km (0.1 R)
• M12: 3,505,677 km (0.087 R)
• M13: 3,737,703 km (0.092 R)
• M14: 3,897,922 km (0.09 R)
• M15: 4,894,543 km (0.044 R)
• M16: 5,692,797 km (0.12 R)
• M17: 6,808,349 km (0.077 R)
• M18: 7,375,624 km (0.088 R)
• M19: 7,930,034 km (0.103 R)
• M20: 15,219,040 km (0.068 R)
• M21: 15,559,675 km (0.104 R)
• M22: 16,185,442 km (0.078 R)
• M23: 17,045,780 km (0.106 R)
• M24: 17,710,742 km (0.071 R)
• M25: 18,239,720 km (0.076 R)
• M26: 18,546,695 km (0.107 R)
• M27: 22,154,397 km (0.066 R)
• M28: 22,856,909 km (0.085 R)
• M29: 23,393,517 km (0.102 R)
• M30: 25,624,021 km (0.076 R)
• M31: 26,398,040 km (0.101 R)
• M32: 30,394,996 km (0.08 R)
• M33: 30,826,436 km (0.114 R)
• M34: 32,368,641 km (0.114 R)
• M35: 36,934,368 km (0.114 R)
• M36: 44,628,635 km (0.086 R)
• M37: 46,172,036 km (0.058 R)
• M38: 46,742,004 km (0.064 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: 432 - 11,428 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit