🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.84

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.46 AU - 0.58 AU

Year: 242 Days

Day: 15.2 Hours

Environment

Temp: -109 °C

Axial Tilt: 28.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 295.4

Radius: 13.4

Gravity: 1.65 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.64 AU - 0.78 AU

Year: 386 Days

Day: 13.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 62,303,512 km

• M1: 166,652 km (0.105 R)
• M2: 781,649 km (0.106 R)
• M3: 1,448,706 km (0.087 R)
• M4: 1,889,421 km (0.062 R)
• M5: 2,404,786 km (0.087 R)
• M6: 3,120,163 km (0.114 R)
• M7: 3,604,112 km (0.056 R)
• M8: 4,114,390 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 813.2

Radius: 12.2

Gravity: 5.46 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.93 AU - 0.93 AU

Year: 579 Days

Day: 14.2 Hours

Environment

Temp: -162 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 62,303,512 km

• M1: 152,291 km (0.089 R)
• M2: 573,259 km (0.066 R)
• M3: 1,186,461 km (0.072 R)
• M4: 1,657,544 km (0.1 R)
• M5: 2,058,018 km (0.109 R)
• M6: 2,672,716 km (0.119 R)
• M7: 4,627,810 km (0.091 R)
• M8: 5,071,218 km (0.035 R)
• M9: 7,419,456 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 123.2

Radius: 10.9

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.86 AU - 1.04 AU

Year: 598 Days

Day: 7.5 Hours

Environment

Temp: -150 °C

Axial Tilt: 110.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 62,303,512 km

• M1: 136,134 km (0.069 R)
• M2: 483,351 km (0.109 R)
• M3: 1,048,232 km (0.106 R)
• M4: 1,421,629 km (0.078 R)
• M5: 1,770,192 km (0.102 R)
• M6: 2,743,326 km (0.118 R)
• M7: 3,798,739 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 502.5

Radius: 11.6

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.96 AU - 1.18 AU

Year: 715 Days

Day: 8.7 Hours

Environment

Temp: -157 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 62,303,512 km

• M1: 146,606 km (0.046 R)
• M2: 577,298 km (0.075 R)
• M3: 946,655 km (0.083 R)
• M4: 1,433,148 km (0.052 R)
• M5: 1,817,614 km (0.114 R)
• M6: 2,224,072 km (0.101 R)
• M7: 2,595,074 km (0.095 R)
• M8: 3,102,510 km (0.095 R)
• M9: 3,477,103 km (0.117 R)
• M10: 4,707,247 km (0.114 R)
• M11: 5,466,157 km (0.098 R)
• M12: 6,111,522 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 811.3

Radius: 14.8

Gravity: 3.7 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.89 AU - 1.47 AU

Year: 828 Days

Day: 6 Hours

Environment

Temp: -167 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 62,303,512 km

• M1: 185,950 km (0.071 R)
• M2: 658,679 km (0.113 R)
• M3: 1,183,768 km (0.092 R)
• M4: 1,704,967 km (0.113 R)
• M5: 2,338,963 km (0.116 R)
• M6: 3,051,049 km (0.089 R)
• M7: 3,622,812 km (0.088 R)
• M8: 4,201,606 km (0.077 R)
• M9: 4,859,687 km (0.107 R)
• M10: 7,140,306 km (0.068 R)
• M11: 7,783,128 km (0.068 R)
• M12: 8,806,378 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 53.5

Radius: 12

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.49 AU - 1.67 AU

Year: 1282 Days

Day: 7.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 62,303,512 km

• M1: 149,299 km (0.114 R)
• M2: 524,191 km (0.062 R)
• M3: 982,110 km (0.061 R)
• M4: 1,475,933 km (0.083 R)
• M5: 2,030,342 km (0.046 R)
• M6: 3,022,176 km (0.117 R)
• M7: 4,246,336 km (0.036 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 210.4

Radius: 13

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 4.27 AU - 6.93 AU

Year: 8557 Days

Day: 13.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 62,303,512 km

• M1: 161,715 km (0.037 R)
• M2: 846,874 km (0.107 R)
• M3: 1,854,864 km (0.063 R)
• M4: 2,964,731 km (0.051 R)
• M5: 3,387,494 km (0.101 R)
• M6: 3,961,800 km (0.053 R)
• M7: 4,428,546 km (0.108 R)
• M8: 7,103,505 km (0.116 R)
• M9: 8,085,466 km (0.086 R)
• M10: 8,647,655 km (0.093 R)
• M11: 11,907,841 km (0.119 R)
• M12: 12,488,580 km (0.08 R)
• M13: 13,292,220 km (0.111 R)
• M14: 15,002,871 km (0.084 R)
• M15: 16,616,434 km (0.068 R)
• M16: 17,403,767 km (0.119 R)
• M17: 19,183,833 km (0.106 R)
• M18: 20,185,989 km (0.055 R)
• M19: 23,855,475 km (0.093 R)
• M20: 25,171,637 km (0.108 R)
• M21: 27,527,504 km (0.098 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 244.3

Radius: 12.2

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 4.75 AU - 7.03 AU

Year: 9230 Days

Day: 10.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 62,303,512 km

• M1: 151,842 km (0.12 R)
• M2: 646,861 km (0.083 R)
• M3: 1,843,046 km (0.103 R)
• M4: 2,719,540 km (0.117 R)
• M5: 3,460,348 km (0.049 R)
• M6: 4,456,221 km (0.057 R)
• M7: 5,286,490 km (0.071 R)
• M8: 7,324,461 km (0.037 R)
• M9: 9,122,927 km (0.06 R)
• M10: 12,022,882 km (0.082 R)
• M11: 12,576,843 km (0.111 R)
• M12: 13,200,666 km (0.075 R)
• M13: 14,285,998 km (0.085 R)
• M14: 18,225,957 km (0.064 R)
• M15: 18,823,302 km (0.12 R)
• M16: 19,296,779 km (0.081 R)
• M17: 22,382,235 km (0.114 R)
• M18: 23,609,985 km (0.108 R)
• M19: 26,283,000 km (0.11 R)
• M20: 30,429,703 km (0.056 R)

Planet 10 - Ice Giant

Semi-Major Axis: 11.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 259.6

Radius: 6.7

Gravity: 5.78 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 11.16 AU - 11.16 AU

Year: 24072 Days

Day: 19.5 Hours

Environment

Temp: -235 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 62,303,512 km

• M1: 86,468 km (0.089 R)
• M2: 297,550 km (0.085 R)
• M3: 588,518 km (0.104 R)
• M4: 1,478,625 km (0.104 R)
• M5: 1,780,065 km (0.089 R)
• M6: 2,660,598 km (0.119 R)
• M7: 3,184,191 km (0.085 R)
• M8: 3,578,979 km (0.103 R)
• M9: 9,451,743 km (0.1 R)
• M10: 10,491,747 km (0.08 R)
• M11: 13,389,009 km (0.098 R)
• M12: 19,134,016 km (0.09 R)
• M13: 20,082,018 km (0.101 R)
• M14: 24,287,962 km (0.04 R)
• M15: 28,822,274 km (0.11 R)
• M16: 31,701,734 km (0.073 R)
• M17: 34,641,182 km (0.049 R)
• M18: 37,891,196 km (0.071 R)
• M19: 41,197,010 km (0.082 R)
• M20: 43,798,965 km (0.076 R)
• M21: 48,375,613 km (0.072 R)
• M22: 51,597,652 km (0.09 R)
• M23: 56,170,410 km (0.043 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 359 - 14,862 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit