🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.13

Radius: 0.44

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.63 AU - 0.71 AU

Year: 360 Days

Day: 25.1 Hours

Environment

Temp: -131 °C

Axial Tilt: 22.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 78,145,084 km

• M1: 11,519 km (0.073 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 955

Radius: 13.7

Gravity: 5.09 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.88 AU - 1 AU

Year: 598 Days

Day: 9.5 Hours

Environment

Temp: -148 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,145,084 km

• M1: 170,542 km (0.071 R)
• M2: 695,032 km (0.083 R)
• M3: 1,148,612 km (0.07 R)
• M4: 2,026,154 km (0.03 R)
• M5: 2,603,153 km (0.117 R)
• M6: 3,175,215 km (0.112 R)
• M7: 3,816,092 km (0.115 R)
• M8: 4,368,108 km (0.12 R)
• M9: 4,820,941 km (0.111 R)
• M10: 5,596,456 km (0.117 R)
• M11: 6,112,569 km (0.117 R)
• M12: 7,623,807 km (0.078 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 519.9

Radius: 13.6

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 1.17 AU - 1.29 AU

Year: 895 Days

Day: 9.5 Hours

Environment

Temp: -170 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,145,084 km

• M1: 169,195 km (0.109 R)
• M2: 603,627 km (0.062 R)
• M3: 1,184,516 km (0.119 R)
• M4: 1,667,567 km (0.106 R)
• M5: 2,106,787 km (0.047 R)
• M6: 3,239,392 km (0.064 R)
• M7: 3,817,139 km (0.092 R)
• M8: 5,568,631 km (0.04 R)
• M9: 6,035,077 km (0.079 R)
• M10: 6,485,516 km (0.092 R)
• M11: 7,181,147 km (0.08 R)
• M12: 8,342,325 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 694.7

Radius: 11.6

Gravity: 5.16 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 1.43 AU - 1.95 AU

Year: 1441 Days

Day: 6.6 Hours

Environment

Temp: -187 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 78,145,084 km

• M1: 144,512 km (0.066 R)
• M2: 526,884 km (0.092 R)
• M3: 891,454 km (0.04 R)
• M4: 1,282,652 km (0.108 R)
• M5: 1,790,836 km (0.077 R)
• M6: 2,334,624 km (0.041 R)
• M7: 3,175,215 km (0.086 R)
• M8: 4,012,364 km (0.08 R)
• M9: 4,445,750 km (0.113 R)
• M10: 5,668,263 km (0.093 R)
• M11: 6,624,643 km (0.08 R)
• M12: 7,631,137 km (0.074 R)
• M13: 8,016,501 km (0.087 R)
• M14: 8,766,585 km (0.037 R)
• M15: 9,500,063 km (0.071 R)
• M16: 10,507,455 km (0.105 R)
• M17: 11,947,484 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 771.2

Radius: 10.8

Gravity: 6.61 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 2.62 AU - 2.84 AU

Year: 2959 Days

Day: 10.5 Hours

Environment

Temp: -207 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 78,145,084 km

• M1: 136,433 km (0.077 R)
• M2: 633,098 km (0.08 R)
• M3: 1,077,853 km (0.082 R)
• M4: 1,521,859 km (0.034 R)
• M5: 2,787,457 km (0.067 R)
• M6: 4,019,994 km (0.117 R)
• M7: 6,234,342 km (0.098 R)
• M8: 6,783,216 km (0.085 R)
• M9: 11,192,613 km (0.033 R)
• M10: 12,447,440 km (0.119 R)
• M11: 14,477,334 km (0.097 R)
• M12: 16,501,393 km (0.108 R)
• M13: 18,884,637 km (0.069 R)
• M14: 21,618,538 km (0.04 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 887

Radius: 9.8

Gravity: 9.24 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 4.13 AU - 5.57 AU

Year: 7007 Days

Day: 7.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 78,145,084 km

• M1: 123,717 km (0.079 R)
• M2: 465,698 km (0.078 R)
• M3: 1,113,756 km (0.106 R)
• M4: 1,468,453 km (0.105 R)
• M5: 1,809,386 km (0.097 R)
• M6: 2,271,644 km (0.079 R)
• M7: 3,016,641 km (0.081 R)
• M8: 3,916,622 km (0.101 R)
• M9: 6,485,367 km (0.111 R)
• M10: 7,893,382 km (0.062 R)
• M11: 9,680,628 km (0.095 R)
• M12: 11,829,003 km (0.043 R)
• M13: 13,917,090 km (0.065 R)
• M14: 16,239,746 km (0.103 R)
• M15: 17,113,697 km (0.069 R)
• M16: 20,769,720 km (0.116 R)
• M17: 23,196,496 km (0.102 R)
• M18: 23,788,904 km (0.11 R)
• M19: 26,168,557 km (0.088 R)
• M20: 31,498,879 km (0.047 R)
• M21: 33,604,020 km (0.053 R)
• M22: 36,820,674 km (0.08 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 874.3

Radius: 7.5

Gravity: 15.54 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 7.38 AU - 11.1 AU

Year: 18425 Days

Day: 22.1 Hours

Environment

Temp: -228 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 78,145,084 km

• M1: 94,247 km (0.12 R)
• M2: 765,642 km (0.099 R)
• M3: 1,006,195 km (0.06 R)
• M4: 2,036,476 km (0.066 R)
• M5: 2,747,963 km (0.116 R)
• M6: 4,143,711 km (0.082 R)
• M7: 7,205,681 km (0.112 R)
• M8: 11,259,035 km (0.064 R)
• M9: 14,931,663 km (0.076 R)
• M10: 23,885,095 km (0.112 R)
• M11: 24,311,898 km (0.108 R)
• M12: 25,511,673 km (0.093 R)
• M13: 29,469,434 km (0.117 R)
• M14: 31,211,651 km (0.044 R)
• M15: 38,722,212 km (0.066 R)
• M16: 40,205,774 km (0.041 R)
• M17: 45,533,702 km (0.086 R)
• M18: 55,117,391 km (0.084 R)
• M19: 61,867,695 km (0.111 R)
• M20: 73,330,333 km (0.096 R)
• M21: 76,056,605 km (0.118 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 427 - 12,598 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit