🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.95

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.53 AU - 0.57 AU

Year: 268 Days

Day: 27.2 Hours

Environment

Temp: -113 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,893,583 km

• M1: 54,304 km (0.085 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.83

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.56 AU - 0.78 AU

Year: 360 Days

Day: 25.2 Hours

Environment

Temp: -140 °C

Axial Tilt: 38.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,893,583 km

• M1: 415,732 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 945.2

Radius: 8.4

Gravity: 13.4 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.55 AU - 0.87 AU

Year: 392 Days

Day: 9.6 Hours

Environment

Temp: -130 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 61,893,583 km

• M1: 104,419 km (0.038 R)
• M2: 380,128 km (0.112 R)
• M3: 709,692 km (0.067 R)
• M4: 1,079,797 km (0.082 R)
• M5: 1,527,544 km (0.086 R)
• M6: 2,051,735 km (0.115 R)
• M7: 3,159,956 km (0.114 R)
• M8: 3,556,091 km (0.1 R)
• M9: 4,961,862 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116.8

Radius: 10.5

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.97 AU - 1.31 AU

Year: 798 Days

Day: 10.7 Hours

Environment

Temp: -175 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 61,893,583 km

• M1: 131,048 km (0.094 R)
• M2: 473,477 km (0.108 R)
• M3: 996,023 km (0.085 R)
• M4: 1,659,340 km (0.09 R)
• M5: 2,304,106 km (0.092 R)
• M6: 2,699,344 km (0.109 R)
• M7: 3,046,112 km (0.09 R)
• M8: 3,467,679 km (0.068 R)
• M9: 4,103,021 km (0.094 R)
• M10: 4,688,098 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 679.9

Radius: 12.8

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.96 AU - 1.58 AU

Year: 939 Days

Day: 12.8 Hours

Environment

Temp: -165 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 61,893,583 km

• M1: 159,322 km (0.086 R)
• M2: 579,393 km (0.087 R)
• M3: 1,021,305 km (0.112 R)
• M4: 1,573,470 km (0.083 R)
• M5: 2,144,934 km (0.12 R)
• M6: 2,612,278 km (0.097 R)
• M7: 3,029,955 km (0.056 R)
• M8: 3,608,001 km (0.061 R)
• M9: 4,081,180 km (0.068 R)
• M10: 4,595,647 km (0.079 R)
• M11: 5,419,931 km (0.089 R)
• M12: 6,106,136 km (0.111 R)
• M13: 7,850,447 km (0.116 R)
• M14: 8,570,312 km (0.101 R)
• M15: 9,249,636 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 621.3

Radius: 13.3

Gravity: 3.51 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1.82 AU - 2.7 AU

Year: 2229 Days

Day: 5.1 Hours

Environment

Temp: -184 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 61,893,583 km

• M1: 165,455 km (0.103 R)
• M2: 1,107,024 km (0.117 R)
• M3: 1,643,781 km (0.044 R)
• M4: 2,116,361 km (0.073 R)
• M5: 4,309,017 km (0.114 R)
• M6: 4,761,401 km (0.11 R)
• M7: 5,690,105 km (0.09 R)
• M8: 6,210,855 km (0.096 R)
• M9: 6,763,320 km (0.076 R)
• M10: 8,119,574 km (0.103 R)
• M11: 9,242,007 km (0.054 R)
• M12: 9,788,488 km (0.069 R)
• M13: 11,249,760 km (0.087 R)
• M14: 12,519,995 km (0.094 R)
• M15: 14,969,661 km (0.109 R)
• M16: 16,307,514 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 874.8

Radius: 14.7

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 4.33 AU - 7.21 AU

Year: 9092 Days

Day: 12.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 61,893,583 km

• M1: 187,596 km (0.105 R)
• M2: 830,119 km (0.074 R)
• M3: 1,469,649 km (0.115 R)
• M4: 2,196,994 km (0.066 R)
• M5: 3,294,744 km (0.058 R)
• M6: 5,008,986 km (0.103 R)
• M7: 6,116,159 km (0.116 R)
• M8: 7,059,374 km (0.054 R)
• M9: 9,426,910 km (0.096 R)
• M10: 11,659,658 km (0.041 R)
• M11: 14,289,738 km (0.119 R)
• M12: 19,254,592 km (0.086 R)
• M13: 21,443,808 km (0.107 R)
• M14: 27,486,514 km (0.102 R)
• M15: 31,435,749 km (0.082 R)
• M16: 35,159,838 km (0.113 R)
• M17: 38,170,046 km (0.09 R)
• M18: 38,917,288 km (0.105 R)
• M19: 44,150,969 km (0.081 R)
• M20: 45,112,734 km (0.112 R)
• M21: 47,937,740 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 494.4

Radius: 5.1

Gravity: 19.01 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 7.2 AU - 10.5 AU

Year: 17271 Days

Day: 23.3 Hours

Environment

Temp: -232 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 61,893,583 km

• M1: 63,429 km (0.086 R)
• M2: 400,473 km (0.107 R)
• M3: 686,505 km (0.116 R)
• M4: 1,377,497 km (0.11 R)
• M5: 4,387,556 km (0.065 R)
• M6: 4,979,365 km (0.119 R)
• M7: 6,081,752 km (0.113 R)
• M8: 10,463,025 km (0.09 R)
• M9: 12,891,597 km (0.026 R)
• M10: 18,246,452 km (0.094 R)
• M11: 21,089,859 km (0.087 R)
• M12: 25,526,932 km (0.077 R)
• M13: 34,530,181 km (0.108 R)
• M14: 35,417,146 km (0.064 R)
• M15: 38,168,999 km (0.116 R)
• M16: 40,638,561 km (0.11 R)
• M17: 44,390,475 km (0.048 R)
• M18: 55,798,959 km (0.097 R)
• M19: 57,019,378 km (0.066 R)
• M20: 57,371,232 km (0.06 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 162 - 17,805 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit