🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.35

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 0.45 AU - 0.67 AU

Year: 275 Days

Day: 47.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 23.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 70,811,305 km

• M1: 394,639 km (0.087 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 739.8

Radius: 9.9

Gravity: 7.55 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.87 AU - 1.13 AU

Year: 656 Days

Day: 12.7 Hours

Environment

Temp: -153 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 70,811,305 km

• M1: 123,119 km (0.113 R)
• M2: 493,673 km (0.064 R)
• M3: 1,066,932 km (0.087 R)
• M4: 2,460,287 km (0.069 R)
• M5: 2,882,901 km (0.111 R)
• M6: 3,353,685 km (0.115 R)
• M7: 3,962,249 km (0.111 R)
• M8: 4,339,834 km (0.065 R)
• M9: 4,841,436 km (0.114 R)
• M10: 5,769,691 km (0.106 R)
• M11: 6,644,090 km (0.08 R)
• M12: 7,858,227 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 111.5

Radius: 13.6

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.03 AU - 1.33 AU

Year: 841 Days

Day: 7 Hours

Environment

Temp: -169 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 70,811,305 km

• M1: 171,290 km (0.093 R)
• M2: 626,366 km (0.11 R)
• M3: 1,116,299 km (0.088 R)
• M4: 1,571,077 km (0.103 R)
• M5: 2,325,349 km (0.084 R)
• M6: 3,046,112 km (0.092 R)
• M7: 3,912,134 km (0.03 R)
• M8: 4,599,387 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 314.8

Radius: 10.4

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 1.55 AU - 2.53 AU

Year: 1911 Days

Day: 13.8 Hours

Environment

Temp: -180 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 70,811,305 km

• M1: 129,701 km (0.082 R)
• M2: 516,262 km (0.057 R)
• M3: 978,669 km (0.082 R)
• M4: 1,532,032 km (0.085 R)
• M5: 1,886,728 km (0.095 R)
• M6: 3,094,282 km (0.105 R)
• M7: 3,831,201 km (0.095 R)
• M8: 4,241,548 km (0.097 R)
• M9: 4,587,120 km (0.055 R)
• M10: 5,523,901 km (0.096 R)
• M11: 6,488,359 km (0.067 R)
• M12: 8,777,805 km (0.099 R)
• M13: 10,673,958 km (0.101 R)
• M14: 11,420,301 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 857.5

Radius: 11.9

Gravity: 6.06 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 2.75 AU - 3.19 AU

Year: 3358 Days

Day: 7.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 70,811,305 km

• M1: 148,401 km (0.078 R)
• M2: 858,841 km (0.074 R)
• M3: 1,404,574 km (0.1 R)
• M4: 2,120,400 km (0.115 R)
• M5: 2,874,523 km (0.083 R)
• M6: 3,248,967 km (0.114 R)
• M7: 3,656,322 km (0.107 R)
• M8: 4,119,776 km (0.1 R)
• M9: 5,038,606 km (0.065 R)
• M10: 5,723,764 km (0.105 R)
• M11: 6,146,677 km (0.098 R)
• M12: 7,024,069 km (0.057 R)
• M13: 8,086,962 km (0.119 R)
• M14: 10,572,082 km (0.077 R)
• M15: 11,038,228 km (0.112 R)
• M16: 12,286,772 km (0.06 R)
• M17: 13,234,624 km (0.101 R)
• M18: 16,484,189 km (0.051 R)
• M19: 21,959,771 km (0.09 R)
• M20: 22,441,326 km (0.029 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909.4

Radius: 12.6

Gravity: 5.73 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 3.09 AU - 4.09 AU

Year: 4462 Days

Day: 12.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 70,811,305 km

• M1: 156,779 km (0.111 R)
• M2: 629,209 km (0.072 R)
• M3: 1,104,182 km (0.102 R)
• M4: 2,360,056 km (0.093 R)
• M5: 2,982,982 km (0.1 R)
• M6: 3,936,668 km (0.093 R)
• M7: 4,509,927 km (0.071 R)
• M8: 5,975,089 km (0.1 R)
• M9: 6,571,236 km (0.08 R)
• M10: 7,956,363 km (0.043 R)
• M11: 8,639,726 km (0.067 R)
• M12: 9,320,695 km (0.106 R)
• M13: 9,950,951 km (0.103 R)
• M14: 11,390,980 km (0.072 R)
• M15: 12,508,776 km (0.071 R)
• M16: 13,172,093 km (0.098 R)
• M17: 13,858,896 km (0.031 R)
• M18: 16,847,263 km (0.1 R)
• M19: 18,361,792 km (0.079 R)
• M20: 20,730,675 km (0.025 R)
• M21: 30,214,880 km (0.071 R)

Planet 7 - Ice Giant

Semi-Major Axis: 11.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 378.3

Radius: 6

Gravity: 10.51 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 10.95 AU - 11.19 AU

Year: 24162 Days

Day: 23.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 70,811,305 km

• M1: 75,248 km (0.097 R)
• M2: 264,639 km (0.08 R)
• M3: 522,545 km (0.084 R)
• M4: 711,188 km (0.065 R)
• M5: 1,909,168 km (0.078 R)
• M6: 2,223,024 km (0.101 R)
• M7: 2,854,926 km (0.109 R)
• M8: 4,335,496 km (0.097 R)
• M9: 10,546,201 km (0.111 R)
• M10: 14,236,182 km (0.075 R)
• M11: 16,288,964 km (0.107 R)
• M12: 20,135,125 km (0.105 R)
• M13: 23,514,841 km (0.074 R)
• M14: 26,148,361 km (0.098 R)
• M15: 28,507,071 km (0.084 R)
• M16: 30,036,111 km (0.109 R)
• M17: 38,791,925 km (0.11 R)
• M18: 44,131,970 km (0.119 R)
• M19: 47,951,802 km (0.096 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 328 - 11,805 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit