🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.48 AU - 0.64 AU

Year: 271 Days

Day: 34.4 Hours

Environment

Temp: -118 °C

Axial Tilt: 25.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 31,240,126 km

• M1: 193,430 km (0.117 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 146.2

Radius: 14.4

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.64 AU - 0.76 AU

Year: 378 Days

Day: 13.2 Hours

Environment

Temp: -145 °C

Axial Tilt: 157.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 31,240,126 km

• M1: 179,218 km (0.045 R)
• M2: 632,949 km (0.094 R)
• M3: 1,083,537 km (0.111 R)
• M4: 1,751,492 km (0.046 R)
• M5: 2,453,405 km (0.1 R)
• M6: 2,978,344 km (0.098 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 649.4

Radius: 11.5

Gravity: 4.91 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 1.63 AU - 1.75 AU

Year: 1419 Days

Day: 11.9 Hours

Environment

Temp: -180 °C

Axial Tilt: 15.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 31,240,126 km

• M1: 143,016 km (0.073 R)
• M2: 645,216 km (0.114 R)
• M3: 1,048,232 km (0.089 R)
• M4: 1,441,226 km (0.101 R)
• M5: 1,842,896 km (0.119 R)
• M6: 2,367,087 km (0.084 R)
• M7: 2,837,722 km (0.106 R)
• M8: 3,324,813 km (0.074 R)
• M9: 4,267,429 km (0.066 R)
• M10: 4,675,831 km (0.068 R)
• M11: 5,049,527 km (0.048 R)
• M12: 5,636,997 km (0.084 R)
• M13: 6,269,348 km (0.076 R)
• M14: 6,676,104 km (0.08 R)
• M15: 7,384,450 km (0.087 R)
• M16: 7,838,629 km (0.053 R)
• M17: 8,396,779 km (0.044 R)
• M18: 9,071,166 km (0.119 R)
• M19: 9,813,172 km (0.115 R)
• M20: 10,796,927 km (0.069 R)
• M21: 11,559,278 km (0.04 R)
• M22: 12,320,133 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 180.5

Radius: 13.8

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 1.33 AU - 2.07 AU

Year: 1431 Days

Day: 10.6 Hours

Environment

Temp: -173 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 31,240,126 km

• M1: 173,833 km (0.086 R)
• M2: 710,739 km (0.112 R)
• M3: 1,140,684 km (0.092 R)
• M4: 1,941,780 km (0.084 R)
• M5: 2,889,034 km (0.081 R)
• M6: 3,336,332 km (0.03 R)
• M7: 4,746,142 km (0.051 R)
• M8: 6,501,823 km (0.106 R)
• M9: 8,042,830 km (0.05 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 582.5

Radius: 12.6

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 2.27 AU - 3.09 AU

Year: 2833 Days

Day: 14.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 31,240,126 km

• M1: 156,779 km (0.109 R)
• M2: 578,645 km (0.098 R)
• M3: 1,086,081 km (0.042 R)
• M4: 1,505,703 km (0.074 R)
• M5: 1,951,055 km (0.05 R)
• M6: 3,065,859 km (0.112 R)
• M7: 3,642,708 km (0.089 R)
• M8: 4,046,772 km (0.116 R)
• M9: 4,567,073 km (0.042 R)
• M10: 5,346,478 km (0.06 R)
• M11: 6,000,819 km (0.108 R)
• M12: 7,229,467 km (0.086 R)
• M13: 7,777,892 km (0.047 R)
• M14: 8,452,878 km (0.029 R)
• M15: 9,271,627 km (0.052 R)
• M16: 9,736,877 km (0.072 R)
• M17: 13,443,463 km (0.049 R)
• M18: 14,369,025 km (0.06 R)
• M19: 15,735,751 km (0.116 R)
• M20: 18,277,419 km (0.077 R)
• M21: 19,355,272 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 719.5

Radius: 9

Gravity: 8.88 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 2.68 AU - 2.72 AU

Year: 2865 Days

Day: 7.8 Hours

Environment

Temp: -198 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 31,240,126 km

• M1: 112,198 km (0.093 R)
• M2: 448,943 km (0.027 R)
• M3: 947,104 km (0.104 R)
• M4: 1,419,833 km (0.062 R)
• M5: 1,751,641 km (0.071 R)
• M6: 2,108,881 km (0.116 R)
• M7: 2,441,138 km (0.118 R)
• M8: 3,229,818 km (0.099 R)
• M9: 3,870,396 km (0.076 R)
• M10: 4,221,203 km (0.107 R)
• M11: 5,378,193 km (0.069 R)
• M12: 6,222,224 km (0.087 R)
• M13: 6,763,469 km (0.067 R)
• M14: 7,091,089 km (0.045 R)
• M15: 8,071,703 km (0.09 R)
• M16: 10,495,936 km (0.064 R)
• M17: 10,814,580 km (0.11 R)
• M18: 13,137,685 km (0.119 R)
• M19: 14,028,690 km (0.111 R)
• M20: 18,112,413 km (0.031 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 299.1

Radius: 13.8

Gravity: 1.57 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 4.01 AU - 4.55 AU

Year: 5717 Days

Day: 12.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 31,240,126 km

• M1: 174,431 km (0.105 R)
• M2: 666,758 km (0.071 R)
• M3: 1,166,714 km (0.091 R)
• M4: 1,848,880 km (0.085 R)
• M5: 2,319,814 km (0.115 R)
• M6: 3,452,270 km (0.119 R)
• M7: 4,045,575 km (0.075 R)
• M8: 5,025,591 km (0.039 R)
• M9: 7,130,583 km (0.096 R)
• M10: 9,226,897 km (0.076 R)
• M11: 12,956,821 km (0.086 R)
• M12: 13,788,286 km (0.113 R)
• M13: 14,864,194 km (0.052 R)
• M14: 15,666,338 km (0.091 R)
• M15: 16,610,151 km (0.119 R)
• M16: 17,532,870 km (0.091 R)
• M17: 18,856,961 km (0.109 R)
• M18: 20,637,475 km (0.088 R)
• M19: 21,099,583 km (0.102 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 516.2

Radius: 10.9

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 3.37 AU - 5.53 AU

Year: 6061 Days

Day: 9.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 165.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 31,240,126 km

• M1: 135,835 km (0.085 R)
• M2: 682,316 km (0.079 R)
• M3: 1,145,321 km (0.039 R)
• M4: 1,538,913 km (0.039 R)
• M5: 3,046,261 km (0.103 R)
• M6: 5,597,952 km (0.086 R)
• M7: 7,230,514 km (0.107 R)
• M8: 11,552,845 km (0.107 R)
• M9: 12,235,759 km (0.113 R)
• M10: 13,952,096 km (0.12 R)
• M11: 16,001,437 km (0.11 R)
• M12: 19,170,369 km (0.079 R)
• M13: 19,576,677 km (0.075 R)
• M14: 22,735,286 km (0.094 R)
• M15: 28,965,140 km (0.037 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 285 - 14,319 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit