🌌 Stone's Star System Generator

Asteroid Belt

Center: 1.21 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.52

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 2.12 AU - 2.7 AU

Year: 1645 Days

Day: 38.5 Hours

Environment

Temp: -129 °C

Axial Tilt: 33.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 37,493,533 km

• M1: 80,334 km (0.077 R)

Planet 2 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 486

Radius: 10.4

Gravity: 4.49 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 2.55 AU - 2.71 AU

Year: 1875 Days

Day: 14.6 Hours

Environment

Temp: -130 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 37,493,533 km

• M1: 129,402 km (0.049 R)
• M2: 471,383 km (0.114 R)
• M3: 804,238 km (0.088 R)
• M4: 1,225,057 km (0.06 R)
• M5: 1,607,280 km (0.112 R)
• M6: 2,207,167 km (0.115 R)
• M7: 2,632,324 km (0.113 R)
• M8: 3,217,701 km (0.099 R)
• M9: 3,750,269 km (0.114 R)
• M10: 4,082,975 km (0.079 R)
• M11: 4,788,179 km (0.119 R)
• M12: 5,266,144 km (0.117 R)
• M13: 6,221,327 km (0.091 R)
• M14: 6,740,431 km (0.079 R)
• M15: 7,102,309 km (0.093 R)
• M16: 7,950,229 km (0.03 R)
• M17: 8,443,154 km (0.089 R)
• M18: 9,490,190 km (0.081 R)
• M19: 10,587,191 km (0.039 R)
• M20: 11,077,423 km (0.116 R)
• M21: 11,729,670 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 956.3

Radius: 13

Gravity: 5.66 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 2.31 AU - 3.49 AU

Year: 2172 Days

Day: 13.4 Hours

Environment

Temp: -141 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 37,493,533 km

• M1: 161,715 km (0.105 R)
• M2: 592,108 km (0.104 R)
• M3: 1,110,315 km (0.083 R)
• M4: 1,830,180 km (0.047 R)
• M5: 2,284,210 km (0.085 R)
• M6: 2,737,641 km (0.11 R)
• M7: 3,217,551 km (0.076 R)
• M8: 3,678,761 km (0.037 R)
• M9: 4,626,015 km (0.104 R)
• M10: 5,959,979 km (0.099 R)
• M11: 6,439,291 km (0.116 R)
• M12: 7,059,972 km (0.061 R)
• M13: 8,787,828 km (0.111 R)
• M14: 9,805,243 km (0.078 R)
• M15: 10,705,224 km (0.052 R)
• M16: 11,215,203 km (0.087 R)
• M17: 12,713,126 km (0.061 R)
• M18: 13,646,318 km (0.053 R)
• M19: 15,009,454 km (0.069 R)
• M20: 15,950,574 km (0.089 R)
• M21: 17,678,280 km (0.078 R)
• M22: 19,182,037 km (0.071 R)

Planet 4 - Gas Giant

Semi-Major Axis: 7.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439.6

Radius: 9.4

Gravity: 4.98 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 5.44 AU - 9.04 AU

Year: 8566 Days

Day: 13.4 Hours

Environment

Temp: -188 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 37,493,533 km

• M1: 117,434 km (0.099 R)
• M2: 677,080 km (0.074 R)
• M3: 1,924,577 km (0.118 R)
• M4: 2,271,494 km (0.11 R)
• M5: 2,678,999 km (0.045 R)
• M6: 3,011,106 km (0.114 R)
• M7: 4,253,815 km (0.084 R)
• M8: 4,571,262 km (0.109 R)
• M9: 5,651,209 km (0.085 R)
• M10: 6,540,868 km (0.119 R)
• M11: 8,389,897 km (0.096 R)
• M12: 9,367,968 km (0.034 R)
• M13: 9,725,507 km (0.116 R)
• M14: 11,148,033 km (0.077 R)
• M15: 12,488,879 km (0.117 R)
• M16: 15,241,929 km (0.091 R)
• M17: 16,052,001 km (0.071 R)
• M18: 17,690,247 km (0.039 R)
• M19: 18,306,291 km (0.094 R)
• M20: 18,865,937 km (0.111 R)
• M21: 19,293,189 km (0.1 R)
• M22: 20,019,486 km (0.114 R)
• M23: 20,839,283 km (0.101 R)
• M24: 22,625,631 km (0.118 R)
• M25: 23,433,310 km (0.107 R)
• M26: 25,797,106 km (0.076 R)
• M27: 26,147,314 km (0.067 R)
• M28: 28,038,082 km (0.11 R)
• M29: 29,729,734 km (0.109 R)
• M30: 30,114,799 km (0.059 R)
• M31: 30,600,693 km (0.066 R)

Planet 5 - Gas Giant

Semi-Major Axis: 7.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 377.1

Radius: 11.5

Gravity: 2.85 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 6.64 AU - 7.88 AU

Year: 8601 Days

Day: 14.9 Hours

Environment

Temp: -186 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 37,493,533 km

• M1: 147,653 km (0.116 R)
• M2: 540,796 km (0.057 R)
• M3: 1,023,997 km (0.057 R)
• M4: 2,635,914 km (0.085 R)
• M5: 4,032,261 km (0.113 R)
• M6: 5,622,935 km (0.095 R)
• M7: 10,270,642 km (0.112 R)
• M8: 12,862,275 km (0.09 R)
• M9: 13,684,316 km (0.081 R)
• M10: 14,309,186 km (0.104 R)
• M11: 15,555,037 km (0.077 R)
• M12: 18,534,578 km (0.111 R)
• M13: 20,523,781 km (0.098 R)
• M14: 22,416,792 km (0.071 R)
• M15: 23,606,993 km (0.072 R)
• M16: 24,672,130 km (0.118 R)
• M17: 27,519,576 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 357.5

Radius: 9.2

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 7.19 AU - 8.01 AU

Year: 9213 Days

Day: 9.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 37,493,533 km

• M1: 117,584 km (0.087 R)
• M2: 636,988 km (0.086 R)
• M3: 2,258,479 km (0.078 R)
• M4: 2,871,232 km (0.049 R)
• M5: 3,729,625 km (0.098 R)
• M6: 4,167,946 km (0.097 R)
• M7: 4,722,356 km (0.104 R)
• M8: 5,629,817 km (0.109 R)
• M9: 12,184,447 km (0.102 R)
• M10: 16,230,322 km (0.075 R)
• M11: 24,936,469 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 161.2

Radius: 6.3

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 8.91 AU - 11.43 AU

Year: 14261 Days

Day: 24.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 37,493,533 km

• M1: 78,688 km (0.071 R)
• M2: 405,410 km (0.108 R)
• M3: 798,553 km (0.105 R)
• M4: 1,459,926 km (0.07 R)
• M5: 1,766,452 km (0.12 R)
• M6: 2,115,164 km (0.113 R)
• M7: 3,073,937 km (0.073 R)
• M8: 3,353,236 km (0.083 R)
• M9: 4,190,386 km (0.056 R)
• M10: 7,191,319 km (0.083 R)
• M11: 7,684,693 km (0.108 R)
• M12: 9,038,703 km (0.097 R)
• M13: 9,568,130 km (0.038 R)
• M14: 11,031,796 km (0.104 R)
• M15: 14,454,745 km (0.072 R)
• M16: 14,934,655 km (0.09 R)
• M17: 15,301,469 km (0.088 R)
• M18: 15,611,735 km (0.065 R)
• M19: 16,437,964 km (0.103 R)
• M20: 18,525,452 km (0.089 R)
• M21: 19,020,172 km (0.076 R)
• M22: 19,523,719 km (0.074 R)
• M23: 20,482,342 km (0.12 R)
• M24: 22,254,478 km (0.092 R)
• M25: 23,545,957 km (0.104 R)
• M26: 24,801,382 km (0.075 R)
• M27: 25,143,662 km (0.085 R)
• M28: 28,087,898 km (0.064 R)
• M29: 30,465,756 km (0.065 R)
• M30: 30,759,716 km (0.099 R)
• M31: 32,157,259 km (0.107 R)
• M32: 32,666,341 km (0.028 R)
• M33: 33,700,810 km (0.106 R)
• M34: 34,863,784 km (0.056 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 520 - 11,778 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit