🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.47

Radius: 1.44

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.62 AU - 0.7 AU

Year: 346 Days

Day: 23.7 Hours

Environment

Temp: -126 °C

Axial Tilt: 34 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 864.4

Radius: 11.3

Gravity: 6.77 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.73 AU - 0.87 AU

Year: 462 Days

Day: 9.8 Hours

Environment

Temp: -138 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 39,659,975 km

• M1: 140,472 km (0.104 R)
• M2: 692,937 km (0.101 R)
• M3: 1,220,868 km (0.096 R)
• M4: 1,958,386 km (0.103 R)
• M5: 2,537,030 km (0.084 R)
• M6: 3,322,868 km (0.118 R)
• M7: 4,278,649 km (0.07 R)
• M8: 4,774,117 km (0.1 R)
• M9: 5,862,741 km (0.096 R)
• M10: 6,341,903 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 868.7

Radius: 9

Gravity: 10.72 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.91 AU - 1.25 AU

Year: 725 Days

Day: 7.1 Hours

Environment

Temp: -156 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 39,659,975 km

• M1: 114,442 km (0.117 R)
• M2: 411,993 km (0.085 R)
• M3: 1,103,135 km (0.079 R)
• M4: 1,814,024 km (0.056 R)
• M5: 2,133,565 km (0.098 R)
• M6: 2,637,710 km (0.086 R)
• M7: 3,076,031 km (0.047 R)
• M8: 3,779,889 km (0.047 R)
• M9: 4,387,406 km (0.105 R)
• M10: 4,775,463 km (0.092 R)
• M11: 5,409,609 km (0.047 R)
• M12: 6,779,327 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 606.9

Radius: 11.8

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.54 AU - 1.76 AU

Year: 1368 Days

Day: 11.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 39,659,975 km

• M1: 146,756 km (0.094 R)
• M2: 565,181 km (0.048 R)
• M3: 1,120,488 km (0.073 R)
• M4: 1,786,947 km (0.101 R)
• M5: 3,152,626 km (0.084 R)
• M6: 3,635,228 km (0.084 R)
• M7: 4,636,337 km (0.117 R)
• M8: 5,141,230 km (0.091 R)
• M9: 5,661,083 km (0.087 R)
• M10: 7,280,330 km (0.12 R)
• M11: 7,937,214 km (0.066 R)
• M12: 8,576,147 km (0.103 R)
• M13: 10,967,469 km (0.091 R)
• M14: 11,866,851 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 499

Radius: 13.3

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 2.48 AU - 3.44 AU

Year: 3288 Days

Day: 8.5 Hours

Environment

Temp: -194 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 39,659,975 km

• M1: 166,951 km (0.119 R)
• M2: 1,206,208 km (0.078 R)
• M3: 2,123,392 km (0.105 R)
• M4: 3,612,041 km (0.081 R)
• M5: 4,701,113 km (0.026 R)
• M6: 5,213,336 km (0.047 R)
• M7: 5,918,989 km (0.089 R)
• M8: 7,552,897 km (0.111 R)
• M9: 8,126,605 km (0.053 R)
• M10: 9,689,304 km (0.057 R)
• M11: 11,485,377 km (0.1 R)
• M12: 12,770,572 km (0.048 R)
• M13: 13,219,665 km (0.089 R)
• M14: 13,772,429 km (0.09 R)
• M15: 15,322,412 km (0.065 R)
• M16: 16,718,310 km (0.111 R)
• M17: 18,651,863 km (0.06 R)
• M18: 19,289,299 km (0.093 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 112

Radius: 6.2

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 5.95 AU - 6.47 AU

Year: 9992 Days

Day: 23.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 39,659,975 km

• M1: 78,240 km (0.061 R)
• M2: 355,295 km (0.086 R)
• M3: 1,177,934 km (0.09 R)
• M4: 1,602,792 km (0.119 R)
• M5: 2,347,939 km (0.083 R)
• M6: 3,342,016 km (0.095 R)
• M7: 4,639,628 km (0.067 R)
• M8: 5,662,728 km (0.06 R)
• M9: 10,877,261 km (0.092 R)
• M10: 12,615,738 km (0.059 R)
• M11: 13,350,264 km (0.115 R)
• M12: 14,216,734 km (0.103 R)
• M13: 14,531,339 km (0.118 R)
• M14: 15,228,914 km (0.118 R)
• M15: 16,690,485 km (0.119 R)
• M16: 17,336,299 km (0.111 R)
• M17: 18,059,455 km (0.077 R)
• M18: 23,768,409 km (0.069 R)
• M19: 24,510,265 km (0.109 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 288.3

Radius: 4.3

Gravity: 15.59 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 6 AU - 7.72 AU

Year: 11601 Days

Day: 22.2 Hours

Environment

Temp: -232 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 39,659,975 km

• M1: 57,296 km (0.065 R)
• M2: 198,068 km (0.107 R)
• M3: 360,980 km (0.074 R)
• M4: 643,121 km (0.049 R)
• M5: 1,166,265 km (0.099 R)
• M6: 1,327,083 km (0.063 R)
• M7: 1,780,813 km (0.093 R)
• M8: 3,093,834 km (0.109 R)
• M9: 4,191,882 km (0.071 R)
• M10: 4,379,178 km (0.068 R)
• M11: 4,656,383 km (0.109 R)
• M12: 5,124,026 km (0.07 R)
• M13: 5,654,650 km (0.095 R)
• M14: 7,008,959 km (0.089 R)
• M15: 7,426,936 km (0.112 R)
• M16: 7,741,241 km (0.11 R)
• M17: 7,982,692 km (0.11 R)
• M18: 8,354,443 km (0.055 R)
• M19: 9,221,362 km (0.1 R)
• M20: 10,051,631 km (0.099 R)
• M21: 10,980,633 km (0.085 R)
• M22: 12,342,872 km (0.108 R)
• M23: 13,813,867 km (0.074 R)
• M24: 15,908,537 km (0.061 R)
• M25: 25,421,615 km (0.104 R)
• M26: 29,899,827 km (0.113 R)
• M27: 32,324,061 km (0.042 R)
• M28: 35,094,763 km (0.114 R)
• M29: 36,537,634 km (0.068 R)
• M30: 36,876,174 km (0.118 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: 235 - 15,790 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit