🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 164.4

Radius: 13.5

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.42 AU - 0.66 AU

Year: 269 Days

Day: 5.6 Hours

Environment

Temp: -141 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 57,623,073 km

• M1: 169,494 km (0.077 R)
• M2: 589,565 km (0.119 R)
• M3: 1,131,259 km (0.12 R)
• M4: 1,570,628 km (0.107 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 459.6

Radius: 13.4

Gravity: 2.56 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 0.56 AU - 0.62 AU

Year: 307 Days

Day: 7.6 Hours

Environment

Temp: -143 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 57,623,073 km

• M1: 166,652 km (0.073 R)
• M2: 823,985 km (0.101 R)
• M3: 1,516,025 km (0.06 R)
• M4: 2,220,032 km (0.104 R)
• M5: 3,500,889 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 679.3

Radius: 10.9

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.65 AU - 2.43 AU

Year: 1976 Days

Day: 14.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 57,623,073 km

• M1: 135,536 km (0.086 R)
• M2: 596,297 km (0.118 R)
• M3: 943,514 km (0.09 R)
• M4: 1,524,253 km (0.086 R)
• M5: 1,947,615 km (0.069 R)
• M6: 3,051,497 km (0.096 R)
• M7: 3,661,557 km (0.101 R)
• M8: 4,061,732 km (0.117 R)
• M9: 4,551,964 km (0.092 R)
• M10: 5,304,591 km (0.109 R)
• M11: 8,216,065 km (0.102 R)
• M12: 10,983,176 km (0.101 R)
• M13: 11,549,404 km (0.101 R)
• M14: 12,699,214 km (0.051 R)
• M15: 13,707,204 km (0.117 R)
• M16: 14,497,530 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 14.1

Radius: 13.6

Gravity: 0.08 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 2.33 AU - 2.77 AU

Year: 2762 Days

Day: 9.1 Hours

Environment

Temp: -210 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 57,623,073 km

• M1: 172,486 km (0.057 R)
• M2: 785,389 km (0.093 R)
• M3: 1,632,262 km (0.094 R)
• M4: 2,110,676 km (0.111 R)
• M5: 2,987,170 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 280.5

Radius: 11.3

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 3.68 AU - 4.22 AU

Year: 5325 Days

Day: 10.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 57,623,073 km

• M1: 142,866 km (0.066 R)
• M2: 597,943 km (0.069 R)
• M3: 1,154,297 km (0.11 R)
• M4: 1,551,330 km (0.091 R)
• M5: 2,507,709 km (0.084 R)
• M6: 3,484,583 km (0.106 R)
• M7: 3,965,540 km (0.049 R)
• M8: 6,035,676 km (0.082 R)
• M9: 6,701,985 km (0.108 R)
• M10: 8,078,734 km (0.094 R)
• M11: 8,888,357 km (0.1 R)
• M12: 9,520,857 km (0.069 R)
• M13: 10,183,277 km (0.107 R)
• M14: 10,587,041 km (0.088 R)
• M15: 11,255,445 km (0.098 R)
• M16: 11,996,253 km (0.106 R)
• M17: 15,079,465 km (0.086 R)
• M18: 16,747,930 km (0.04 R)
• M19: 17,311,466 km (0.096 R)
• M20: 20,257,646 km (0.097 R)
• M21: 22,967,462 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 264.2

Radius: 14.4

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 3.47 AU - 5.29 AU

Year: 6217 Days

Day: 13.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 57,623,073 km

• M1: 204,351 km (0.119 R)
• M2: 1,145,022 km (0.042 R)
• M3: 3,314,939 km (0.052 R)
• M4: 4,540,295 km (0.073 R)
• M5: 5,712,544 km (0.108 R)
• M6: 6,399,947 km (0.057 R)
• M7: 7,600,918 km (0.102 R)
• M8: 10,282,011 km (0.091 R)
• M9: 11,790,855 km (0.117 R)
• M10: 13,492,232 km (0.114 R)
• M11: 19,072,083 km (0.11 R)
• M12: 19,767,115 km (0.111 R)
• M13: 20,348,302 km (0.098 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 660.2

Radius: 6.2

Gravity: 17.17 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 6.24 AU - 8.8 AU

Year: 13987 Days

Day: 17.1 Hours

Environment

Temp: -235 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 57,623,073 km

• M1: 77,342 km (0.107 R)
• M2: 333,154 km (0.103 R)
• M3: 550,221 km (0.094 R)
• M4: 925,712 km (0.093 R)
• M5: 1,254,079 km (0.116 R)
• M6: 2,163,933 km (0.089 R)
• M7: 2,678,400 km (0.097 R)
• M8: 2,976,549 km (0.092 R)
• M9: 4,811,965 km (0.106 R)
• M10: 5,114,751 km (0.058 R)
• M11: 6,823,907 km (0.059 R)
• M12: 8,249,425 km (0.044 R)
• M13: 9,337,749 km (0.119 R)
• M14: 9,756,175 km (0.108 R)
• M15: 12,597,337 km (0.073 R)
• M16: 13,500,609 km (0.114 R)
• M17: 14,103,489 km (0.06 R)
• M18: 14,515,332 km (0.098 R)
• M19: 16,020,137 km (0.103 R)
• M20: 17,079,290 km (0.088 R)
• M21: 18,265,152 km (0.111 R)
• M22: 20,536,197 km (0.068 R)
• M23: 21,243,646 km (0.108 R)
• M24: 22,150,658 km (0.103 R)
• M25: 26,553,472 km (0.092 R)
• M26: 27,392,866 km (0.026 R)
• M27: 30,242,855 km (0.098 R)
• M28: 32,327,950 km (0.102 R)
• M29: 34,754,877 km (0.105 R)
• M30: 35,129,021 km (0.117 R)
• M31: 36,911,031 km (0.063 R)
• M32: 45,678,962 km (0.116 R)
• M33: 50,621,526 km (0.098 R)
• M34: 58,158,117 km (0.092 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 270.7

Radius: 5.2

Gravity: 10.01 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 7.95 AU - 11.75 AU

Year: 20967 Days

Day: 22.4 Hours

Environment

Temp: -238 °C

Axial Tilt: 152 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 57,623,073 km

• M1: 64,776 km (0.086 R)
• M2: 304,880 km (0.1 R)
• M3: 1,369,269 km (0.117 R)
• M4: 1,557,463 km (0.094 R)
• M5: 1,950,756 km (0.063 R)
• M6: 2,511,449 km (0.077 R)
• M7: 2,795,087 km (0.089 R)
• M8: 4,609,110 km (0.06 R)
• M9: 5,034,866 km (0.11 R)
• M10: 6,117,207 km (0.067 R)
• M11: 7,045,761 km (0.107 R)
• M12: 7,302,770 km (0.12 R)
• M13: 8,111,197 km (0.111 R)
• M14: 11,064,259 km (0.041 R)
• M15: 13,323,037 km (0.106 R)
• M16: 13,915,594 km (0.071 R)
• M17: 17,531,524 km (0.057 R)
• M18: 18,162,827 km (0.102 R)
• M19: 18,727,559 km (0.103 R)
• M20: 20,405,449 km (0.108 R)
• M21: 21,637,836 km (0.11 R)
• M22: 25,833,458 km (0.068 R)
• M23: 26,341,941 km (0.12 R)
• M24: 26,650,262 km (0.036 R)
• M25: 29,978,815 km (0.105 R)
• M26: 31,338,360 km (0.096 R)
• M27: 31,568,891 km (0.065 R)
• M28: 32,033,242 km (0.05 R)
• M29: 34,179,822 km (0.092 R)
• M30: 36,674,965 km (0.038 R)
• M31: 37,059,432 km (0.073 R)
• M32: 40,641,553 km (0.052 R)
• M33: 41,885,010 km (0.115 R)
• M34: 43,439,033 km (0.09 R)
• M35: 47,264,101 km (0.119 R)
• M36: 47,719,327 km (0.105 R)
• M37: 48,484,670 km (0.056 R)
• M38: 52,922,341 km (0.114 R)
• M39: 57,106,594 km (0.097 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: 397 - 16,695 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit