🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.28

Radius: 0.6

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.58 AU - 0.6 AU

Year: 164 Days

Day: 25.3 Hours

Environment

Temp: 245 °C

Axial Tilt: 14.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.23

Radius: 0.56

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 1.38 AU - 1.7 AU

Year: 691 Days

Day: 29.9 Hours

Environment

Temp: -43 °C

Axial Tilt: 24.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.83

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 2 AU - 2.46 AU

Year: 1204 Days

Day: 24 Hours

Environment

Temp: -73 °C

Axial Tilt: 26.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.18

Radius: 0.5

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 2.15 AU - 3.01 AU

Year: 1499 Days

Day: 13.5 Hours

Environment

Temp: -77 °C

Axial Tilt: 42.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,989,288 km

• M1: 404,812 km (0.099 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.12

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 3.39 AU - 3.87 AU

Year: 2501 Days

Day: 33.1 Hours

Environment

Temp: -123 °C

Axial Tilt: 33.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 5.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 248.3

Radius: 8.9

Gravity: 3.13 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 4.1 AU - 6.02 AU

Year: 4116 Days

Day: 7.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 81,989,288 km

• M1: 110,702 km (0.085 R)
• M2: 510,278 km (0.03 R)
• M3: 804,986 km (0.092 R)
• M4: 1,313,918 km (0.12 R)
• M5: 1,595,162 km (0.063 R)
• M6: 2,363,497 km (0.104 R)
• M7: 2,815,731 km (0.11 R)
• M8: 4,011,467 km (0.117 R)
• M9: 4,378,281 km (0.078 R)
• M10: 4,656,982 km (0.061 R)
• M11: 4,970,389 km (0.096 R)
• M12: 6,368,082 km (0.055 R)
• M13: 8,896,436 km (0.098 R)
• M14: 9,451,145 km (0.103 R)
• M15: 11,056,479 km (0.046 R)
• M16: 11,374,225 km (0.107 R)
• M17: 12,448,787 km (0.081 R)
• M18: 14,798,969 km (0.107 R)
• M19: 15,087,843 km (0.085 R)
• M20: 18,687,317 km (0.08 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 731.3

Radius: 6.4

Gravity: 17.85 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 10.78 AU - 17.44 AU

Year: 19168 Days

Day: 18.3 Hours

Environment

Temp: -193 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 81,989,288 km

• M1: 83,476 km (0.059 R)
• M2: 412,741 km (0.066 R)
• M3: 840,590 km (0.113 R)
• M4: 1,361,490 km (0.112 R)
• M5: 1,940,434 km (0.026 R)
• M6: 2,286,005 km (0.066 R)
• M7: 2,768,757 km (0.107 R)
• M8: 3,073,937 km (0.11 R)
• M9: 4,223,297 km (0.075 R)
• M10: 5,714,339 km (0.116 R)
• M11: 6,424,929 km (0.107 R)
• M12: 7,099,466 km (0.112 R)
• M13: 7,574,589 km (0.113 R)
• M14: 7,919,711 km (0.073 R)
• M15: 8,483,246 km (0.105 R)
• M16: 9,632,607 km (0.074 R)
• M17: 10,454,348 km (0.061 R)
• M18: 11,069,345 km (0.086 R)
• M19: 12,303,826 km (0.091 R)
• M20: 12,919,422 km (0.073 R)
• M21: 13,129,158 km (0.028 R)
• M22: 14,813,480 km (0.1 R)
• M23: 15,746,971 km (0.119 R)
• M24: 17,730,788 km (0.099 R)
• M25: 17,989,892 km (0.087 R)
• M26: 22,487,851 km (0.058 R)
• M27: 24,139,412 km (0.047 R)
• M28: 33,754,964 km (0.117 R)
• M29: 35,503,315 km (0.108 R)
• M30: 41,109,644 km (0.107 R)
• M31: 42,328,269 km (0.118 R)
• M32: 42,946,557 km (0.114 R)
• M33: 43,570,829 km (0.112 R)
• M34: 46,455,076 km (0.097 R)
• M35: 54,036,097 km (0.042 R)
• M36: 54,399,022 km (0.117 R)
• M37: 58,499,350 km (0.099 R)
• M38: 59,845,880 km (0.046 R)
• M39: 61,805,313 km (0.08 R)
• M40: 64,212,492 km (0.075 R)
• M41: 74,467,277 km (0.05 R)

Planet 8 - Ice Giant

Semi-Major Axis: 18.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 261.5

Radius: 6.8

Gravity: 5.66 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 18.38 AU - 19.14 AU

Year: 29386 Days

Day: 24.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 81,989,288 km

• M1: 86,318 km (0.059 R)
• M2: 507,137 km (0.09 R)
• M3: 763,548 km (0.097 R)
• M4: 985,850 km (0.113 R)
• M5: 1,238,521 km (0.09 R)
• M6: 3,010,508 km (0.057 R)
• M7: 4,025,380 km (0.114 R)
• M8: 4,576,648 km (0.055 R)
• M9: 5,214,234 km (0.118 R)
• M10: 5,670,956 km (0.096 R)
• M11: 6,405,930 km (0.109 R)
• M12: 6,885,242 km (0.077 R)
• M13: 8,991,281 km (0.08 R)
• M14: 9,480,915 km (0.096 R)
• M15: 13,141,724 km (0.058 R)
• M16: 13,843,637 km (0.059 R)
• M17: 16,178,262 km (0.058 R)
• M18: 16,739,703 km (0.104 R)
• M19: 18,415,199 km (0.088 R)
• M20: 19,743,029 km (0.057 R)
• M21: 20,476,657 km (0.072 R)
• M22: 22,986,760 km (0.117 R)
• M23: 23,798,628 km (0.112 R)
• M24: 25,803,090 km (0.116 R)
• M25: 28,841,273 km (0.114 R)
• M26: 35,751,498 km (0.085 R)
• M27: 41,269,714 km (0.105 R)
• M28: 54,490,127 km (0.031 R)
• M29: 55,027,632 km (0.112 R)
• M30: 57,954,066 km (0.042 R)
• M31: 63,322,086 km (0.108 R)
• M32: 65,923,294 km (0.108 R)
• M33: 67,147,603 km (0.054 R)

Planet 9 - Ice Giant

Semi-Major Axis: 20.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 318

Radius: 5.2

Gravity: 11.76 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 17.49 AU - 22.91 AU

Year: 32834 Days

Day: 17.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 81,989,288 km

• M1: 65,374 km (0.063 R)
• M2: 534,513 km (0.087 R)
• M3: 997,818 km (0.117 R)
• M4: 1,488,050 km (0.118 R)
• M5: 1,843,943 km (0.048 R)
• M6: 2,649,827 km (0.107 R)
• M7: 2,851,036 km (0.111 R)
• M8: 3,228,172 km (0.037 R)
• M9: 5,587,929 km (0.115 R)
• M10: 7,138,960 km (0.072 R)
• M11: 7,935,269 km (0.094 R)
• M12: 8,408,448 km (0.09 R)
• M13: 8,789,324 km (0.065 R)
• M14: 10,868,285 km (0.037 R)
• M15: 12,469,581 km (0.065 R)
• M16: 19,121,001 km (0.109 R)
• M17: 20,452,273 km (0.062 R)
• M18: 25,036,999 km (0.105 R)
• M19: 30,388,713 km (0.104 R)
• M20: 34,626,671 km (0.108 R)
• M21: 35,043,002 km (0.096 R)
• M22: 36,027,655 km (0.106 R)
• M23: 36,886,048 km (0.039 R)
• M24: 42,642,424 km (0.093 R)
• M25: 47,247,496 km (0.083 R)
• M26: 48,275,682 km (0.115 R)
• M27: 48,969,367 km (0.114 R)
• M28: 50,554,356 km (0.089 R)
• M29: 57,236,893 km (0.117 R)
• M30: 57,818,979 km (0.082 R)
• M31: 59,588,871 km (0.09 R)
• M32: 63,236,366 km (0.078 R)
• M33: 65,749,012 km (0.102 R)

Kuiper Belt

Range: 30.3 - 60.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 386 - 12,439 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit