🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.89

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.47 AU - 0.73 AU

Year: 176 Days

Day: 40.1 Hours

Environment

Temp: 198 °C

Axial Tilt: 11.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.69

Radius: 1.69

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.77 AU - 0.85 AU

Year: 276 Days

Day: 41.9 Hours

Environment

Temp: 161 °C

Axial Tilt: 37.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.32

Radius: 1.12

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.98 AU - 1.1 AU

Year: 402 Days

Day: 30 Hours

Environment

Temp: 1 °C

Axial Tilt: 2.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.97

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.16 AU - 1.62 AU

Year: 621 Days

Day: 32.5 Hours

Environment

Temp: -51 °C

Axial Tilt: 81.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 6.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 263.5

Radius: 12.6

Gravity: 1.66 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 5.87 AU - 6.57 AU

Year: 5875 Days

Day: 14.9 Hours

Environment

Temp: -159 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 73,176,125 km

• M1: 156,779 km (0.097 R)
• M2: 603,777 km (0.11 R)
• M3: 1,309,281 km (0.112 R)
• M4: 1,843,644 km (0.086 R)
• M5: 2,312,334 km (0.109 R)
• M6: 2,843,856 km (0.059 R)
• M7: 3,437,011 km (0.068 R)
• M8: 4,090,006 km (0.071 R)
• M9: 5,300,701 km (0.079 R)
• M10: 6,261,120 km (0.076 R)
• M11: 7,302,022 km (0.106 R)
• M12: 8,278,297 km (0.077 R)
• M13: 9,301,397 km (0.109 R)
• M14: 12,045,621 km (0.073 R)
• M15: 13,949,553 km (0.043 R)
• M16: 14,353,168 km (0.115 R)
• M17: 15,936,960 km (0.047 R)
• M18: 22,059,104 km (0.116 R)

Planet 6 - Ice Giant

Semi-Major Axis: 12.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 346.2

Radius: 3.6

Gravity: 26.71 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 11.1 AU - 13.9 AU

Year: 16738 Days

Day: 19.9 Hours

Environment

Temp: -188 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 73,176,125 km

• M1: 44,879 km (0.099 R)
• M2: 157,527 km (0.07 R)
• M3: 390,899 km (0.072 R)
• M4: 665,561 km (0.083 R)
• M5: 947,104 km (0.051 R)
• M6: 1,662,481 km (0.107 R)
• M7: 1,790,537 km (0.05 R)
• M8: 5,628,470 km (0.081 R)
• M9: 6,180,337 km (0.097 R)
• M10: 7,476,602 km (0.104 R)
• M11: 8,992,478 km (0.114 R)
• M12: 11,777,990 km (0.108 R)
• M13: 12,986,741 km (0.114 R)
• M14: 14,011,337 km (0.034 R)
• M15: 14,143,132 km (0.098 R)
• M16: 17,179,969 km (0.045 R)
• M17: 17,943,666 km (0.046 R)
• M18: 24,597,480 km (0.093 R)
• M19: 30,243,454 km (0.086 R)
• M20: 36,073,731 km (0.071 R)
• M21: 40,840,219 km (0.108 R)
• M22: 41,514,905 km (0.109 R)
• M23: 42,886,418 km (0.106 R)
• M24: 45,286,866 km (0.117 R)
• M25: 45,719,503 km (0.056 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 481.9

Radius: 7.8

Gravity: 7.92 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 14.15 AU - 16.29 AU

Year: 22489 Days

Day: 15.4 Hours

Environment

Temp: -200 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 73,176,125 km

• M1: 104,569 km (0.034 R)
• M2: 358,736 km (0.097 R)
• M3: 614,249 km (0.116 R)
• M4: 997,818 km (0.087 R)
• M5: 1,280,408 km (0.118 R)
• M6: 2,253,094 km (0.117 R)
• M7: 2,893,971 km (0.106 R)
• M8: 3,450,026 km (0.1 R)
• M9: 5,060,298 km (0.063 R)
• M10: 6,493,445 km (0.067 R)
• M11: 6,935,507 km (0.072 R)
• M12: 7,635,924 km (0.108 R)
• M13: 8,960,613 km (0.11 R)
• M14: 11,413,570 km (0.073 R)
• M15: 11,926,989 km (0.054 R)
• M16: 12,455,519 km (0.09 R)
• M17: 15,182,389 km (0.097 R)
• M18: 15,803,369 km (0.076 R)
• M19: 21,394,739 km (0.086 R)
• M20: 28,176,909 km (0.088 R)
• M21: 30,927,265 km (0.069 R)
• M22: 46,094,694 km (0.114 R)
• M23: 54,085,165 km (0.052 R)
• M24: 57,561,371 km (0.053 R)
• M25: 58,123,560 km (0.098 R)
• M26: 58,689,339 km (0.062 R)
• M27: 62,951,233 km (0.06 R)
• M28: 65,157,652 km (0.11 R)
• M29: 71,436,274 km (0.094 R)
• M30: 71,868,612 km (0.1 R)
• M31: 72,302,745 km (0.09 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: 403 - 15,571 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit