🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.87

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 0.59 AU - 0.65 AU

Year: 315 Days

Day: 33.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 24.2 °

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: 3.03

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.5 AU - 0.82 AU

Year: 346 Days

Day: 37.3 Hours

Environment

Temp: -140 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 777.3

Radius: 11.5

Gravity: 5.88 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.9 AU - 0.98 AU

Year: 588 Days

Day: 14.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 60,127,298 km

• M1: 144,063 km (0.11 R)
• M2: 540,647 km (0.072 R)
• M3: 913,445 km (0.076 R)
• M4: 1,279,361 km (0.099 R)
• M5: 2,209,261 km (0.119 R)
• M6: 2,889,782 km (0.099 R)
• M7: 3,899,867 km (0.078 R)
• M8: 4,294,805 km (0.08 R)
• M9: 5,698,332 km (0.098 R)
• M10: 6,445,275 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 30.5

Radius: 10.6

Gravity: 0.27 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 1.4 AU - 1.72 AU

Year: 1258 Days

Day: 9.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 60,127,298 km

• M1: 133,740 km (0.099 R)
• M2: 505,940 km (0.076 R)
• M3: 865,573 km (0.108 R)
• M4: 3,892,836 km (0.032 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 602.6

Radius: 14.1

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 2.92 AU - 4.56 AU

Year: 4670 Days

Day: 7.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 60,127,298 km

• M1: 178,769 km (0.042 R)
• M2: 845,378 km (0.077 R)
• M3: 1,544,299 km (0.118 R)
• M4: 2,082,552 km (0.109 R)
• M5: 3,063,914 km (0.038 R)
• M6: 5,130,010 km (0.076 R)
• M7: 7,109,788 km (0.11 R)
• M8: 7,859,573 km (0.084 R)
• M9: 8,851,108 km (0.11 R)
• M10: 13,111,505 km (0.093 R)
• M11: 18,959,585 km (0.111 R)
• M12: 21,081,631 km (0.096 R)
• M13: 22,342,741 km (0.063 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 227.3

Radius: 6.2

Gravity: 5.91 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 5.15 AU - 8.41 AU

Year: 11399 Days

Day: 16.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 60,127,298 km

• M1: 77,043 km (0.093 R)
• M2: 298,597 km (0.085 R)
• M3: 552,016 km (0.077 R)
• M4: 764,894 km (0.057 R)
• M5: 1,052,720 km (0.075 R)
• M6: 1,250,040 km (0.086 R)
• M7: 2,407,030 km (0.095 R)
• M8: 3,876,679 km (0.116 R)
• M9: 5,958,633 km (0.057 R)
• M10: 6,154,756 km (0.078 R)
• M11: 6,456,943 km (0.098 R)
• M12: 7,536,142 km (0.088 R)
• M13: 7,882,013 km (0.101 R)
• M14: 10,046,245 km (0.114 R)
• M15: 15,139,005 km (0.032 R)
• M16: 16,637,826 km (0.107 R)
• M17: 17,027,529 km (0.061 R)
• M18: 18,096,406 km (0.115 R)
• M19: 20,514,954 km (0.11 R)
• M20: 22,661,833 km (0.102 R)
• M21: 24,118,468 km (0.076 R)
• M22: 35,350,874 km (0.072 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 694.4

Radius: 5.2

Gravity: 25.68 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 7.88 AU - 9.24 AU

Year: 16171 Days

Day: 25 Hours

Environment

Temp: -236 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 60,127,298 km

• M1: 89,460 km (0.104 R)
• M2: 311,463 km (0.12 R)
• M3: 526,435 km (0.109 R)
• M4: 751,281 km (0.08 R)
• M5: 969,394 km (0.108 R)
• M6: 1,216,081 km (0.063 R)
• M7: 1,697,786 km (0.065 R)
• M8: 2,058,168 km (0.091 R)
• M9: 2,360,804 km (0.037 R)
• M10: 3,367,448 km (0.11 R)
• M11: 4,870,159 km (0.092 R)
• M12: 5,748,597 km (0.036 R)
• M13: 6,063,650 km (0.116 R)
• M14: 6,515,436 km (0.045 R)
• M15: 6,989,362 km (0.049 R)
• M16: 9,987,004 km (0.042 R)
• M17: 12,337,935 km (0.053 R)
• M18: 13,264,544 km (0.096 R)
• M19: 14,523,111 km (0.038 R)
• M20: 15,330,341 km (0.11 R)
• M21: 16,478,654 km (0.076 R)
• M22: 17,847,924 km (0.105 R)
• M23: 21,179,917 km (0.1 R)
• M24: 22,216,630 km (0.104 R)
• M25: 22,505,204 km (0.071 R)
• M26: 25,424,308 km (0.094 R)
• M27: 31,393,562 km (0.051 R)
• M28: 33,489,727 km (0.095 R)
• M29: 35,677,447 km (0.116 R)
• M30: 39,908,523 km (0.056 R)
• M31: 40,908,136 km (0.042 R)
• M32: 41,924,354 km (0.104 R)
• M33: 45,381,711 km (0.083 R)
• M34: 50,501,249 km (0.115 R)
• M35: 54,409,793 km (0.079 R)
• M36: 55,638,290 km (0.048 R)
• M37: 57,605,802 km (0.034 R)
• M38: 61,679,202 km (0.103 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 713.3

Radius: 7.3

Gravity: 13.39 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 6.98 AU - 10.68 AU

Year: 16942 Days

Day: 24.8 Hours

Environment

Temp: -235 °C

Axial Tilt: 6.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 60,127,298 km

• M1: 96,341 km (0.034 R)
• M2: 766,539 km (0.1 R)
• M3: 1,220,719 km (0.09 R)
• M4: 1,540,559 km (0.105 R)
• M5: 3,098,172 km (0.094 R)
• M6: 5,236,075 km (0.116 R)
• M7: 6,586,046 km (0.094 R)
• M8: 7,716,557 km (0.047 R)
• M9: 7,957,410 km (0.119 R)
• M10: 9,674,793 km (0.078 R)
• M11: 12,660,019 km (0.043 R)
• M12: 17,087,368 km (0.105 R)
• M13: 24,252,508 km (0.052 R)
• M14: 31,204,021 km (0.106 R)
• M15: 36,061,464 km (0.115 R)
• M16: 36,600,316 km (0.089 R)
• M17: 40,523,819 km (0.067 R)
• M18: 42,139,027 km (0.105 R)
• M19: 43,644,132 km (0.025 R)
• M20: 48,865,396 km (0.093 R)
• M21: 54,487,883 km (0.058 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 229

Radius: 4.3

Gravity: 12.39 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 11.14 AU - 11.32 AU

Year: 24299 Days

Day: 24.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 60,127,298 km

• M1: 56,099 km (0.111 R)
• M2: 359,184 km (0.116 R)
• M3: 1,330,224 km (0.12 R)
• M4: 1,791,734 km (0.029 R)
• M5: 8,946,551 km (0.075 R)
• M6: 9,512,929 km (0.081 R)
• M7: 9,671,502 km (0.099 R)
• M8: 11,120,208 km (0.078 R)
• M9: 12,644,012 km (0.117 R)
• M10: 13,290,724 km (0.105 R)
• M11: 27,159,793 km (0.084 R)
• M12: 28,452,169 km (0.058 R)
• M13: 32,454,510 km (0.111 R)
• M14: 35,027,444 km (0.108 R)
• M15: 50,109,303 km (0.061 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 212 - 10,331 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit