🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.6

Radius: 1.21

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.46 AU - 0.58 AU

Year: 242 Days

Day: 25.4 Hours

Environment

Temp: -112 °C

Axial Tilt: 16.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.45 AU - 0.67 AU

Year: 271 Days

Day: 26.7 Hours

Environment

Temp: -115 °C

Axial Tilt: 4.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510.9

Radius: 8.4

Gravity: 7.24 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.57 AU - 0.95 AU

Year: 428 Days

Day: 6.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 37,394,176 km

• M1: 104,419 km (0.119 R)
• M2: 395,088 km (0.036 R)
• M3: 791,822 km (0.058 R)
• M4: 1,079,947 km (0.109 R)
• M5: 1,658,292 km (0.118 R)
• M6: 2,025,854 km (0.093 R)
• M7: 2,294,682 km (0.104 R)
• M8: 2,763,372 km (0.045 R)
• M9: 3,117,470 km (0.112 R)
• M10: 3,536,942 km (0.066 R)
• M11: 3,841,524 km (0.107 R)
• M12: 4,123,815 km (0.09 R)
• M13: 4,701,861 km (0.05 R)
• M14: 5,192,991 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 492.2

Radius: 13.8

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.73 AU - 0.83 AU

Year: 445 Days

Day: 7.7 Hours

Environment

Temp: -150 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 37,394,176 km

• M1: 171,738 km (0.1 R)
• M2: 622,178 km (0.098 R)
• M3: 1,073,365 km (0.093 R)
• M4: 1,552,377 km (0.068 R)
• M5: 2,773,694 km (0.103 R)
• M6: 3,209,473 km (0.058 R)
• M7: 3,691,327 km (0.116 R)
• M8: 4,395,933 km (0.066 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 660.7

Radius: 12.5

Gravity: 4.23 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 1.91 AU - 3.11 AU

Year: 2568 Days

Day: 12.8 Hours

Environment

Temp: -203 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 37,394,176 km

• M1: 155,582 km (0.086 R)
• M2: 742,903 km (0.105 R)
• M3: 1,132,306 km (0.075 R)
• M4: 1,695,991 km (0.041 R)
• M5: 3,295,491 km (0.086 R)
• M6: 3,877,128 km (0.102 R)
• M7: 4,357,636 km (0.098 R)
• M8: 4,832,909 km (0.112 R)
• M9: 5,318,803 km (0.115 R)
• M10: 6,017,574 km (0.095 R)
• M11: 7,907,594 km (0.114 R)
• M12: 9,091,661 km (0.071 R)
• M13: 9,981,020 km (0.078 R)
• M14: 10,849,735 km (0.025 R)
• M15: 13,398,284 km (0.081 R)
• M16: 16,631,693 km (0.103 R)
• M17: 18,792,185 km (0.033 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 346.1

Radius: 8.4

Gravity: 4.91 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 2.12 AU - 3.08 AU

Year: 2707 Days

Day: 7.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 37,394,176 km

• M1: 104,569 km (0.118 R)
• M2: 399,875 km (0.111 R)
• M3: 695,780 km (0.065 R)
• M4: 1,082,640 km (0.102 R)
• M5: 1,392,906 km (0.104 R)
• M6: 2,773,844 km (0.051 R)
• M7: 3,043,718 km (0.119 R)
• M8: 3,689,233 km (0.036 R)
• M9: 4,054,102 km (0.071 R)
• M10: 5,029,032 km (0.116 R)
• M11: 5,340,943 km (0.035 R)
• M12: 6,614,320 km (0.102 R)
• M13: 7,520,883 km (0.086 R)
• M14: 8,109,102 km (0.069 R)
• M15: 8,823,282 km (0.112 R)
• M16: 9,146,563 km (0.112 R)
• M17: 10,269,894 km (0.094 R)
• M18: 11,635,872 km (0.119 R)
• M19: 12,870,503 km (0.115 R)
• M20: 13,202,760 km (0.103 R)
• M21: 13,668,907 km (0.116 R)
• M22: 14,146,124 km (0.098 R)
• M23: 15,133,769 km (0.117 R)
• M24: 15,550,848 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 922.1

Radius: 12.7

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 4 AU - 4.78 AU

Year: 5939 Days

Day: 6.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 37,394,176 km

• M1: 157,975 km (0.048 R)
• M2: 559,795 km (0.06 R)
• M3: 1,153,250 km (0.061 R)
• M4: 1,909,766 km (0.092 R)
• M5: 2,332,979 km (0.079 R)
• M6: 3,077,378 km (0.068 R)
• M7: 4,379,777 km (0.114 R)
• M8: 5,068,376 km (0.119 R)
• M9: 5,484,856 km (0.083 R)
• M10: 6,285,803 km (0.1 R)
• M11: 7,727,927 km (0.093 R)
• M12: 10,526,155 km (0.055 R)
• M13: 11,609,842 km (0.042 R)
• M14: 12,390,444 km (0.09 R)
• M15: 12,930,043 km (0.106 R)
• M16: 13,598,147 km (0.092 R)
• M17: 14,822,755 km (0.113 R)
• M18: 15,247,015 km (0.075 R)
• M19: 17,091,407 km (0.101 R)
• M20: 17,828,476 km (0.101 R)
• M21: 18,447,213 km (0.077 R)
• M22: 20,241,489 km (0.102 R)
• M23: 21,914,143 km (0.118 R)
• M24: 24,847,608 km (0.109 R)
• M25: 27,122,543 km (0.056 R)
• M26: 34,037,405 km (0.104 R)
• M27: 34,777,017 km (0.098 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 378 - 10,604 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit