🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.68

Radius: 1.23

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.51 AU - 0.65 AU

Year: 285 Days

Day: 26.5 Hours

Environment

Temp: -116 °C

Axial Tilt: 36 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.53 AU - 0.73 AU

Year: 323 Days

Day: 12.9 Hours

Environment

Temp: -137 °C

Axial Tilt: 36.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 56.8

Radius: 13.6

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 0.66 AU - 0.7 AU

Year: 362 Days

Day: 10.3 Hours

Environment

Temp: -132 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 23,502,662 km

• M1: 170,990 km (0.11 R)
• M2: 617,690 km (0.092 R)
• M3: 1,140,085 km (0.114 R)
• M4: 1,682,826 km (0.068 R)
• M5: 2,268,502 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.9

Radius: 10.9

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.64 AU - 0.86 AU

Year: 419 Days

Day: 7.3 Hours

Environment

Temp: -147 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 23,502,662 km

• M1: 136,134 km (0.107 R)
• M2: 520,152 km (0.099 R)
• M3: 1,203,365 km (0.077 R)
• M4: 1,616,405 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 756.1

Radius: 8.6

Gravity: 10.22 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.93 AU - 0.99 AU

Year: 607 Days

Day: 10 Hours

Environment

Temp: -161 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 23,502,662 km

• M1: 108,309 km (0.106 R)
• M2: 430,543 km (0.067 R)
• M3: 728,093 km (0.052 R)
• M4: 1,022,352 km (0.048 R)
• M5: 1,564,195 km (0.098 R)
• M6: 1,862,344 km (0.084 R)
• M7: 2,286,454 km (0.107 R)
• M8: 2,662,393 km (0.053 R)
• M9: 3,512,259 km (0.11 R)
• M10: 3,856,184 km (0.042 R)
• M11: 4,298,545 km (0.115 R)
• M12: 4,774,416 km (0.113 R)
• M13: 5,700,876 km (0.09 R)
• M14: 6,315,424 km (0.102 R)
• M15: 6,783,964 km (0.108 R)
• M16: 7,058,925 km (0.099 R)
• M17: 7,496,499 km (0.068 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 521.3

Radius: 14.2

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 2.84 AU - 3.92 AU

Year: 4012 Days

Day: 11.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 23,502,662 km

• M1: 176,525 km (0.043 R)
• M2: 646,861 km (0.093 R)
• M3: 1,172,399 km (0.098 R)
• M4: 1,746,256 km (0.106 R)
• M5: 2,287,052 km (0.113 R)
• M6: 3,311,050 km (0.107 R)
• M7: 3,856,184 km (0.115 R)
• M8: 4,715,923 km (0.088 R)
• M9: 5,435,339 km (0.112 R)
• M10: 6,029,093 km (0.032 R)
• M11: 7,063,114 km (0.075 R)
• M12: 8,527,228 km (0.12 R)
• M13: 10,026,199 km (0.099 R)
• M14: 10,508,652 km (0.082 R)
• M15: 12,411,687 km (0.077 R)
• M16: 13,541,749 km (0.079 R)
• M17: 16,891,096 km (0.111 R)
• M18: 19,491,555 km (0.064 R)
• M19: 22,758,922 km (0.087 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 772.3

Radius: 3.5

Gravity: 63.04 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 7.4 AU - 9.2 AU

Year: 15439 Days

Day: 20.4 Hours

Environment

Temp: -233 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 23,502,662 km

• M1: 57,146 km (0.101 R)
• M2: 2,502,772 km (0.102 R)
• M3: 2,754,695 km (0.117 R)
• M4: 3,814,596 km (0.056 R)
• M5: 4,055,149 km (0.076 R)
• M6: 5,833,569 km (0.097 R)
• M7: 9,140,430 km (0.099 R)
• M8: 9,958,581 km (0.061 R)
• M9: 12,119,372 km (0.058 R)
• M10: 13,105,222 km (0.084 R)
• M11: 13,652,152 km (0.074 R)
• M12: 15,762,828 km (0.113 R)
• M13: 18,587,835 km (0.035 R)
• M14: 27,031,138 km (0.117 R)
• M15: 37,712,726 km (0.108 R)
• M16: 45,120,363 km (0.117 R)
• M17: 47,311,224 km (0.104 R)
• M18: 53,959,503 km (0.105 R)
• M19: 58,232,916 km (0.114 R)
• M20: 64,273,977 km (0.105 R)
• M21: 64,664,727 km (0.056 R)
• M22: 66,443,296 km (0.09 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 15.9

Radius: 3.7

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 8.02 AU - 13.34 AU

Year: 22536 Days

Day: 16.6 Hours

Environment

Temp: -235 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 23,502,662 km

• M1: 54,005 km (0.119 R)
• M2: 180,565 km (0.109 R)
• M3: 435,031 km (0.095 R)
• M4: 888,911 km (0.112 R)
• M5: 2,329,239 km (0.111 R)
• M6: 5,475,581 km (0.097 R)
• M7: 8,126,156 km (0.099 R)
• M8: 9,823,494 km (0.091 R)
• M9: 13,998,621 km (0.12 R)
• M10: 21,921,025 km (0.076 R)
• M11: 23,013,538 km (0.101 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 212 - 13,256 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit