🌌 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: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.23

Radius: 1.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 0.62 AU - 0.68 AU

Year: 344 Days

Day: 40.2 Hours

Environment

Temp: -134 °C

Axial Tilt: 10.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.37

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.59 AU - 0.73 AU

Year: 352 Days

Day: 16 Hours

Environment

Temp: -136 °C

Axial Tilt: 31.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 911.1

Radius: 12.4

Gravity: 5.93 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.66 AU - 1.04 AU

Year: 514 Days

Day: 6 Hours

Environment

Temp: -160 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 68,660,021 km

• M1: 154,235 km (0.101 R)
• M2: 635,193 km (0.086 R)
• M3: 1,062,145 km (0.117 R)
• M4: 1,489,247 km (0.081 R)
• M5: 2,095,268 km (0.103 R)
• M6: 3,104,006 km (0.028 R)
• M7: 3,658,117 km (0.12 R)
• M8: 4,145,507 km (0.114 R)
• M9: 4,597,442 km (0.08 R)
• M10: 5,217,375 km (0.05 R)
• M11: 5,985,560 km (0.039 R)
• M12: 6,387,231 km (0.078 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 138

Radius: 14.7

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 1.09 AU - 1.09 AU

Year: 747 Days

Day: 7 Hours

Environment

Temp: -154 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 68,660,021 km

• M1: 182,809 km (0.099 R)
• M2: 690,693 km (0.053 R)
• M3: 1,488,648 km (0.11 R)
• M4: 2,695,604 km (0.096 R)
• M5: 3,364,905 km (0.113 R)
• M6: 3,883,411 km (0.092 R)
• M7: 4,713,530 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 568.1

Radius: 13.5

Gravity: 3.12 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 2.48 AU - 2.52 AU

Year: 2593 Days

Day: 11.9 Hours

Environment

Temp: -201 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 68,660,021 km

• M1: 170,392 km (0.085 R)
• M2: 596,896 km (0.08 R)
• M3: 1,163,572 km (0.095 R)
• M4: 1,888,374 km (0.049 R)
• M5: 2,808,550 km (0.08 R)
• M6: 3,371,487 km (0.082 R)
• M7: 3,932,479 km (0.118 R)
• M8: 4,619,133 km (0.062 R)
• M9: 5,337,203 km (0.057 R)
• M10: 6,285,504 km (0.115 R)
• M11: 7,168,730 km (0.076 R)
• M12: 8,581,532 km (0.088 R)
• M13: 9,563,044 km (0.05 R)
• M14: 10,468,111 km (0.053 R)
• M15: 11,076,825 km (0.096 R)
• M16: 12,116,380 km (0.03 R)
• M17: 12,830,710 km (0.099 R)
• M18: 15,095,024 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 189.8

Radius: 11.5

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 2.77 AU - 2.95 AU

Year: 3173 Days

Day: 13.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 65.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 68,660,021 km

• M1: 146,456 km (0.108 R)
• M2: 520,152 km (0.055 R)
• M3: 1,003,503 km (0.11 R)
• M4: 1,525,898 km (0.098 R)
• M5: 2,086,292 km (0.104 R)
• M6: 2,966,077 km (0.069 R)
• M7: 4,668,950 km (0.098 R)
• M8: 5,101,287 km (0.103 R)
• M9: 5,858,402 km (0.055 R)
• M10: 6,264,112 km (0.114 R)
• M11: 7,321,021 km (0.044 R)
• M12: 8,432,982 km (0.097 R)
• M13: 9,139,682 km (0.102 R)
• M14: 11,758,243 km (0.049 R)
• M15: 12,136,576 km (0.091 R)
• M16: 12,798,397 km (0.066 R)
• M17: 13,566,433 km (0.096 R)
• M18: 13,982,913 km (0.034 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 256.3

Radius: 12.9

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 5.42 AU - 6.16 AU

Year: 9140 Days

Day: 6.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 68,660,021 km

• M1: 195,824 km (0.08 R)
• M2: 1,922,632 km (0.028 R)
• M3: 2,806,456 km (0.098 R)
• M4: 3,945,345 km (0.079 R)
• M5: 4,790,872 km (0.113 R)
• M6: 5,371,461 km (0.084 R)
• M7: 6,091,924 km (0.104 R)
• M8: 9,256,368 km (0.109 R)
• M9: 16,058,883 km (0.112 R)
• M10: 17,747,543 km (0.104 R)
• M11: 24,956,665 km (0.105 R)
• M12: 31,662,838 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 195.1

Radius: 5.2

Gravity: 7.22 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 5.3 AU - 8.56 AU

Year: 11968 Days

Day: 22.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 68,660,021 km

• M1: 77,342 km (0.116 R)
• M2: 479,760 km (0.098 R)
• M3: 667,057 km (0.077 R)
• M4: 966,402 km (0.117 R)
• M5: 1,216,530 km (0.074 R)
• M6: 1,386,772 km (0.081 R)
• M7: 1,891,366 km (0.119 R)
• M8: 2,185,774 km (0.113 R)
• M9: 2,866,295 km (0.109 R)
• M10: 4,038,245 km (0.042 R)
• M11: 4,939,871 km (0.103 R)
• M12: 5,170,102 km (0.028 R)
• M13: 5,808,885 km (0.1 R)
• M14: 6,464,722 km (0.117 R)
• M15: 7,922,554 km (0.114 R)
• M16: 8,895,239 km (0.104 R)
• M17: 10,219,928 km (0.12 R)
• M18: 11,026,410 km (0.078 R)
• M19: 11,222,084 km (0.068 R)
• M20: 12,604,668 km (0.05 R)
• M21: 14,443,824 km (0.049 R)
• M22: 15,826,707 km (0.091 R)
• M23: 16,582,176 km (0.093 R)
• M24: 16,839,185 km (0.071 R)
• M25: 20,134,976 km (0.079 R)
• M26: 22,243,408 km (0.059 R)
• M27: 29,256,108 km (0.094 R)
• M28: 33,156,573 km (0.057 R)
• M29: 34,704,312 km (0.083 R)
• M30: 35,442,728 km (0.114 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 570.5

Radius: 4.6

Gravity: 26.96 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 7.6 AU - 11.12 AU

Year: 18786 Days

Day: 20.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 68,660,021 km

• M1: 57,894 km (0.083 R)
• M2: 211,382 km (0.041 R)
• M3: 382,522 km (0.118 R)
• M4: 639,680 km (0.05 R)
• M5: 1,053,767 km (0.112 R)
• M6: 1,747,752 km (0.09 R)
• M7: 2,042,161 km (0.09 R)
• M8: 2,801,370 km (0.107 R)
• M9: 4,189,638 km (0.097 R)
• M10: 4,648,305 km (0.094 R)
• M11: 5,626,526 km (0.078 R)
• M12: 6,102,546 km (0.118 R)
• M13: 7,502,782 km (0.066 R)
• M14: 12,430,536 km (0.044 R)
• M15: 15,324,357 km (0.087 R)
• M16: 15,552,344 km (0.093 R)
• M17: 15,782,426 km (0.101 R)
• M18: 17,129,555 km (0.054 R)
• M19: 22,107,424 km (0.063 R)
• M20: 24,714,765 km (0.076 R)
• M21: 30,650,210 km (0.092 R)
• M22: 32,238,640 km (0.094 R)
• M23: 32,989,921 km (0.071 R)
• M24: 36,246,218 km (0.078 R)
• M25: 37,469,031 km (0.114 R)
• M26: 39,000,464 km (0.12 R)
• M27: 42,039,395 km (0.118 R)
• M28: 49,239,690 km (0.106 R)
• M29: 51,584,039 km (0.082 R)
• M30: 52,438,990 km (0.099 R)
• M31: 60,563,052 km (0.116 R)
• M32: 63,057,298 km (0.088 R)
• M33: 64,428,213 km (0.094 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 220 - 12,921 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit