🌌 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: 1.78

Radius: 1.26

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.46 AU - 0.68 AU

Year: 274 Days

Day: 17 Hours

Environment

Temp: -120 °C

Axial Tilt: 38.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 956.8

Radius: 9.7

Gravity: 10.17 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.58 AU - 0.96 AU

Year: 430 Days

Day: 14.2 Hours

Environment

Temp: -139 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 27,670,642 km

• M1: 120,576 km (0.073 R)
• M2: 491,728 km (0.085 R)
• M3: 847,622 km (0.065 R)
• M4: 1,366,427 km (0.118 R)
• M5: 1,876,107 km (0.085 R)
• M6: 2,886,192 km (0.111 R)
• M7: 3,277,540 km (0.078 R)
• M8: 3,958,360 km (0.105 R)
• M9: 4,369,155 km (0.064 R)
• M10: 5,377,445 km (0.079 R)
• M11: 5,828,782 km (0.056 R)
• M12: 6,155,803 km (0.102 R)
• M13: 6,533,687 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 460.7

Radius: 9.3

Gravity: 5.33 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.68 AU - 0.92 AU

Year: 455 Days

Day: 8.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 27,670,642 km

• M1: 115,789 km (0.082 R)
• M2: 405,261 km (0.047 R)
• M3: 716,723 km (0.116 R)
• M4: 1,169,407 km (0.112 R)
• M5: 1,494,782 km (0.112 R)
• M6: 2,315,925 km (0.046 R)
• M7: 2,610,184 km (0.098 R)
• M8: 3,400,060 km (0.068 R)
• M9: 4,035,702 km (0.085 R)
• M10: 4,548,822 km (0.104 R)
• M11: 4,880,032 km (0.078 R)
• M12: 5,196,581 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 904.1

Radius: 14.8

Gravity: 4.13 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.95 AU - 1.15 AU

Year: 684 Days

Day: 13.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 27,670,642 km

• M1: 184,005 km (0.112 R)
• M2: 645,365 km (0.117 R)
• M3: 1,286,392 km (0.056 R)
• M4: 1,829,582 km (0.118 R)
• M5: 2,537,778 km (0.11 R)
• M6: 3,025,019 km (0.074 R)
• M7: 3,506,275 km (0.057 R)
• M8: 4,115,138 km (0.089 R)
• M9: 5,019,009 km (0.117 R)
• M10: 5,509,540 km (0.092 R)
• M11: 6,998,936 km (0.098 R)
• M12: 7,849,849 km (0.061 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 734.4

Radius: 9.1

Gravity: 8.87 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 1.23 AU - 1.47 AU

Year: 997 Days

Day: 11 Hours

Environment

Temp: -165 °C

Axial Tilt: 149.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 27,670,642 km

• M1: 113,096 km (0.093 R)
• M2: 397,781 km (0.093 R)
• M3: 681,418 km (0.114 R)
• M4: 1,267,393 km (0.082 R)
• M5: 1,830,779 km (0.079 R)
• M6: 2,256,833 km (0.066 R)
• M7: 2,698,147 km (0.078 R)
• M8: 3,294,594 km (0.108 R)
• M9: 4,785,935 km (0.115 R)
• M10: 6,455,298 km (0.102 R)
• M11: 6,938,798 km (0.117 R)
• M12: 7,225,876 km (0.077 R)
• M13: 7,696,661 km (0.095 R)
• M14: 8,400,519 km (0.108 R)
• M15: 10,240,423 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 420.3

Radius: 11.8

Gravity: 3.02 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 2.45 AU - 3.71 AU

Year: 3437 Days

Day: 12.6 Hours

Environment

Temp: -211 °C

Axial Tilt: 50 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 27,670,642 km

• M1: 146,905 km (0.055 R)
• M2: 520,152 km (0.119 R)
• M3: 919,578 km (0.055 R)
• M4: 1,287,738 km (0.095 R)
• M5: 2,003,115 km (0.092 R)
• M6: 2,409,872 km (0.037 R)
• M7: 2,825,006 km (0.101 R)
• M8: 3,977,508 km (0.077 R)
• M9: 5,274,372 km (0.093 R)
• M10: 5,928,115 km (0.098 R)
• M11: 6,356,862 km (0.053 R)
• M12: 7,769,216 km (0.108 R)
• M13: 9,743,010 km (0.095 R)
• M14: 10,767,756 km (0.088 R)
• M15: 11,696,010 km (0.073 R)
• M16: 12,589,558 km (0.058 R)
• M17: 13,120,182 km (0.101 R)
• M18: 13,804,443 km (0.114 R)
• M19: 14,850,880 km (0.044 R)
• M20: 15,443,587 km (0.067 R)
• M21: 15,847,501 km (0.11 R)
• M22: 16,888,104 km (0.114 R)
• M23: 18,140,537 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 755.1

Radius: 11.9

Gravity: 5.33 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 5 AU - 5.84 AU

Year: 8023 Days

Day: 10.8 Hours

Environment

Temp: -213 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 27,670,642 km

• M1: 147,952 km (0.069 R)
• M2: 659,577 km (0.12 R)
• M3: 1,764,058 km (0.041 R)
• M4: 2,449,067 km (0.114 R)
• M5: 3,171,176 km (0.081 R)
• M6: 4,487,188 km (0.116 R)
• M7: 5,832,821 km (0.109 R)
• M8: 7,044,713 km (0.101 R)
• M9: 8,038,043 km (0.062 R)
• M10: 8,987,242 km (0.035 R)
• M11: 10,106,533 km (0.11 R)
• M12: 11,005,317 km (0.105 R)
• M13: 11,956,610 km (0.042 R)
• M14: 14,265,952 km (0.047 R)
• M15: 15,140,202 km (0.097 R)
• M16: 18,850,229 km (0.045 R)
• M17: 19,221,830 km (0.096 R)
• M18: 22,789,740 km (0.115 R)
• M19: 24,071,045 km (0.12 R)
• M20: 26,683,473 km (0.099 R)
• M21: 28,009,957 km (0.12 R)
• M22: 29,082,724 km (0.097 R)
• M23: 30,385,721 km (0.097 R)
• M24: 32,571,944 km (0.099 R)
• M25: 33,976,818 km (0.117 R)
• M26: 36,675,863 km (0.039 R)
• M27: 38,196,076 km (0.084 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 43.4

Radius: 4.3

Gravity: 2.35 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 9.08 AU - 9.1 AU

Year: 17425 Days

Day: 18.6 Hours

Environment

Temp: -234 °C

Axial Tilt: 45.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 27,670,642 km

• M1: 67,020 km (0.044 R)
• M2: 347,516 km (0.086 R)
• M3: 706,401 km (0.111 R)
• M4: 2,233,945 km (0.057 R)
• M5: 3,126,895 km (0.054 R)
• M6: 3,464,387 km (0.114 R)
• M7: 5,331,219 km (0.094 R)
• M8: 9,404,919 km (0.06 R)
• M9: 9,648,464 km (0.119 R)
• M10: 10,105,935 km (0.114 R)
• M11: 17,013,915 km (0.088 R)
• M12: 25,887,762 km (0.109 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: 300 - 19,331 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit