🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.83

Radius: 1.52

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.44 AU - 0.64 AU

Year: 256 Days

Day: 22 Hours

Environment

Temp: -114 °C

Axial Tilt: 2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 25,449,524 km

• M1: 35,604 km (0.079 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 96

Radius: 12.5

Gravity: 0.61 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.78 AU - 0.86 AU

Year: 479 Days

Day: 7.6 Hours

Environment

Temp: -150 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 25,449,524 km

• M1: 156,330 km (0.113 R)
• M2: 578,046 km (0.094 R)
• M3: 1,135,448 km (0.095 R)
• M4: 1,951,803 km (0.098 R)
• M5: 3,083,811 km (0.088 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.3

Radius: 12.9

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.86 AU - 1.34 AU

Year: 745 Days

Day: 13.1 Hours

Environment

Temp: -167 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 25,449,524 km

• M1: 160,818 km (0.041 R)
• M2: 948,899 km (0.04 R)
• M3: 1,431,203 km (0.104 R)
• M4: 2,364,095 km (0.081 R)
• M5: 3,748,025 km (0.117 R)
• M6: 4,177,521 km (0.091 R)
• M7: 4,940,320 km (0.038 R)
• M8: 5,651,209 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 698.5

Radius: 13.4

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 2 AU - 2.76 AU

Year: 2371 Days

Day: 5.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 25,449,524 km

• M1: 166,802 km (0.107 R)
• M2: 676,033 km (0.075 R)
• M3: 1,211,743 km (0.099 R)
• M4: 2,166,776 km (0.049 R)
• M5: 3,131,233 km (0.044 R)
• M6: 4,004,885 km (0.033 R)
• M7: 4,989,987 km (0.104 R)
• M8: 5,407,963 km (0.083 R)
• M9: 5,849,277 km (0.108 R)
• M10: 6,611,179 km (0.095 R)
• M11: 7,527,765 km (0.119 R)
• M12: 9,059,647 km (0.085 R)
• M13: 10,117,304 km (0.117 R)
• M14: 11,855,930 km (0.103 R)
• M15: 12,393,436 km (0.116 R)
• M16: 13,077,247 km (0.105 R)
• M17: 13,606,674 km (0.031 R)
• M18: 14,104,386 km (0.062 R)
• M19: 15,967,778 km (0.072 R)
• M20: 17,350,810 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.2

Radius: 13.5

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 1.94 AU - 3.16 AU

Year: 2629 Days

Day: 10.7 Hours

Environment

Temp: -195 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 25,449,524 km

• M1: 167,849 km (0.096 R)
• M2: 621,729 km (0.113 R)
• M3: 1,102,536 km (0.102 R)
• M4: 2,419,746 km (0.118 R)
• M5: 2,914,167 km (0.088 R)
• M6: 3,377,621 km (0.045 R)
• M7: 6,016,527 km (0.071 R)
• M8: 7,025,864 km (0.105 R)
• M9: 7,571,447 km (0.115 R)
• M10: 8,937,126 km (0.112 R)
• M11: 9,664,322 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 260.4

Radius: 8.4

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 4.52 AU - 4.98 AU

Year: 6684 Days

Day: 7.8 Hours

Environment

Temp: -213 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 25,449,524 km

• M1: 104,419 km (0.108 R)
• M2: 401,670 km (0.12 R)
• M3: 854,653 km (0.118 R)
• M4: 1,297,462 km (0.12 R)
• M5: 4,455,773 km (0.073 R)
• M6: 5,646,123 km (0.116 R)
• M7: 6,017,874 km (0.098 R)
• M8: 6,970,962 km (0.082 R)
• M9: 9,648,165 km (0.058 R)
• M10: 11,529,059 km (0.049 R)
• M11: 15,720,193 km (0.034 R)
• M12: 17,217,369 km (0.111 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 90.8

Radius: 5.4

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 6.31 AU - 6.63 AU

Year: 10626 Days

Day: 24.8 Hours

Environment

Temp: -216 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 25,449,524 km

• M1: 73,752 km (0.077 R)
• M2: 458,966 km (0.05 R)
• M3: 738,864 km (0.1 R)
• M4: 1,082,490 km (0.049 R)
• M5: 1,493,136 km (0.111 R)
• M6: 1,667,418 km (0.081 R)
• M7: 2,719,240 km (0.087 R)
• M8: 2,962,935 km (0.068 R)
• M9: 3,574,641 km (0.111 R)
• M10: 4,153,435 km (0.086 R)
• M11: 4,477,165 km (0.117 R)
• M12: 5,688,010 km (0.106 R)
• M13: 6,414,009 km (0.036 R)
• M14: 8,478,160 km (0.066 R)
• M15: 13,656,490 km (0.062 R)
• M16: 13,909,161 km (0.043 R)
• M17: 18,203,219 km (0.102 R)
• M18: 19,384,443 km (0.066 R)
• M19: 20,221,294 km (0.102 R)
• M20: 20,417,865 km (0.117 R)
• M21: 21,623,774 km (0.047 R)
• M22: 23,810,895 km (0.075 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 211 - 19,832 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit