🌌 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 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.5

Radius: 1.44

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.52 AU - 0.56 AU

Year: 252 Days

Day: 15.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 28.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 793

Radius: 12.4

Gravity: 5.16 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.57 AU - 0.91 AU

Year: 405 Days

Day: 14.7 Hours

Environment

Temp: -138 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 63,045,876 km

• M1: 154,235 km (0.102 R)
• M2: 561,291 km (0.063 R)
• M3: 1,511,537 km (0.067 R)
• M4: 2,205,073 km (0.074 R)
• M5: 2,700,990 km (0.115 R)
• M6: 3,363,858 km (0.112 R)
• M7: 4,173,481 km (0.106 R)
• M8: 4,923,416 km (0.051 R)
• M9: 5,593,315 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 969.5

Radius: 8.6

Gravity: 13.11 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.61 AU - 0.89 AU

Year: 413 Days

Day: 10.5 Hours

Environment

Temp: -148 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 63,045,876 km

• M1: 107,262 km (0.107 R)
• M2: 558,898 km (0.109 R)
• M3: 873,801 km (0.09 R)
• M4: 1,199,625 km (0.112 R)
• M5: 1,507,199 km (0.068 R)
• M6: 1,811,481 km (0.11 R)
• M7: 2,294,383 km (0.119 R)
• M8: 3,016,192 km (0.099 R)
• M9: 3,368,645 km (0.114 R)
• M10: 3,644,503 km (0.098 R)
• M11: 4,445,301 km (0.114 R)
• M12: 4,809,123 km (0.116 R)
• M13: 5,426,064 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 927.6

Radius: 12.2

Gravity: 6.23 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.67 AU - 0.99 AU

Year: 481 Days

Day: 14.8 Hours

Environment

Temp: -139 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 63,045,876 km

• M1: 151,842 km (0.05 R)
• M2: 555,457 km (0.119 R)
• M3: 1,202,168 km (0.108 R)
• M4: 1,716,486 km (0.09 R)
• M5: 2,261,471 km (0.058 R)
• M6: 2,733,602 km (0.055 R)
• M7: 3,457,506 km (0.045 R)
• M8: 4,088,360 km (0.109 R)
• M9: 4,715,923 km (0.063 R)
• M10: 5,493,533 km (0.093 R)
• M11: 6,183,179 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 732.9

Radius: 10.1

Gravity: 7.18 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 3.27 AU - 5.11 AU

Year: 5453 Days

Day: 5.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 63,045,876 km

• M1: 130,749 km (0.066 R)
• M2: 454,179 km (0.082 R)
• M3: 864,376 km (0.095 R)
• M4: 2,753,648 km (0.115 R)
• M5: 6,752,549 km (0.097 R)
• M6: 7,561,125 km (0.035 R)
• M7: 10,240,273 km (0.098 R)
• M8: 11,258,736 km (0.049 R)
• M9: 11,694,215 km (0.12 R)
• M10: 12,292,607 km (0.092 R)
• M11: 12,702,654 km (0.092 R)
• M12: 14,548,393 km (0.118 R)
• M13: 15,182,090 km (0.107 R)
• M14: 15,594,830 km (0.12 R)
• M15: 17,067,172 km (0.036 R)
• M16: 17,513,423 km (0.071 R)
• M17: 19,239,932 km (0.074 R)
• M18: 20,215,310 km (0.103 R)
• M19: 20,859,478 km (0.119 R)
• M20: 26,092,711 km (0.119 R)
• M21: 29,601,230 km (0.049 R)
• M22: 31,468,211 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 810.5

Radius: 12.2

Gravity: 5.45 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 4.48 AU - 4.72 AU

Year: 6273 Days

Day: 11.3 Hours

Environment

Temp: -213 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 63,045,876 km

• M1: 152,141 km (0.065 R)
• M2: 863,928 km (0.084 R)
• M3: 2,041,113 km (0.083 R)
• M4: 2,519,677 km (0.106 R)
• M5: 6,341,005 km (0.102 R)
• M6: 7,148,983 km (0.114 R)
• M7: 8,716,021 km (0.097 R)
• M8: 10,644,337 km (0.071 R)
• M9: 11,032,394 km (0.091 R)
• M10: 11,888,393 km (0.1 R)
• M11: 13,450,045 km (0.098 R)
• M12: 14,251,292 km (0.078 R)
• M13: 19,887,391 km (0.103 R)
• M14: 26,059,500 km (0.109 R)
• M15: 28,217,300 km (0.097 R)
• M16: 32,580,172 km (0.109 R)
• M17: 33,919,672 km (0.044 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 369.3

Radius: 12.6

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 3.84 AU - 6.34 AU

Year: 7301 Days

Day: 8.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 63,045,876 km

• M1: 156,928 km (0.107 R)
• M2: 672,442 km (0.12 R)
• M3: 1,372,112 km (0.063 R)
• M4: 1,764,058 km (0.113 R)
• M5: 2,263,117 km (0.088 R)
• M6: 5,280,057 km (0.087 R)
• M7: 5,743,810 km (0.099 R)
• M8: 8,880,878 km (0.046 R)
• M9: 9,708,603 km (0.079 R)
• M10: 11,327,401 km (0.046 R)
• M11: 13,865,179 km (0.119 R)
• M12: 14,526,552 km (0.081 R)
• M13: 15,853,036 km (0.078 R)
• M14: 17,511,628 km (0.118 R)
• M15: 22,271,533 km (0.039 R)
• M16: 24,348,400 km (0.077 R)
• M17: 27,831,038 km (0.116 R)
• M18: 31,256,530 km (0.112 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 36.3

Radius: 13.9

Gravity: 0.19 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 4.96 AU - 6.44 AU

Year: 8653 Days

Day: 13.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 63,045,876 km

• M1: 207,642 km (0.098 R)
• M2: 1,686,566 km (0.093 R)
• M3: 2,998,390 km (0.069 R)
• M4: 4,046,622 km (0.106 R)
• M5: 8,832,857 km (0.105 R)
• M6: 9,354,953 km (0.117 R)
• M7: 12,974,923 km (0.076 R)
• M8: 13,479,666 km (0.106 R)
• M9: 14,217,034 km (0.103 R)
• M10: 14,799,119 km (0.063 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 449.7

Radius: 5.8

Gravity: 13.37 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 7.53 AU - 11.47 AU

Year: 18617 Days

Day: 21.7 Hours

Environment

Temp: -235 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 63,045,876 km

• M1: 72,256 km (0.1 R)
• M2: 761,154 km (0.106 R)
• M3: 1,091,915 km (0.103 R)
• M4: 1,410,558 km (0.089 R)
• M5: 3,340,221 km (0.092 R)
• M6: 4,317,694 km (0.08 R)
• M7: 4,540,595 km (0.103 R)
• M8: 5,436,536 km (0.114 R)
• M9: 7,256,394 km (0.044 R)
• M10: 7,480,941 km (0.091 R)
• M11: 7,943,797 km (0.058 R)
• M12: 8,182,405 km (0.076 R)
• M13: 8,673,834 km (0.094 R)
• M14: 8,926,804 km (0.108 R)
• M15: 15,080,513 km (0.066 R)
• M16: 15,299,524 km (0.087 R)
• M17: 16,425,996 km (0.102 R)
• M18: 18,341,896 km (0.111 R)
• M19: 20,136,322 km (0.076 R)
• M20: 21,212,529 km (0.109 R)
• M21: 25,076,792 km (0.089 R)
• M22: 25,384,215 km (0.093 R)
• M23: 25,590,661 km (0.07 R)
• M24: 27,607,090 km (0.096 R)
• M25: 30,071,566 km (0.097 R)
• M26: 31,953,357 km (0.082 R)
• M27: 34,793,772 km (0.076 R)
• M28: 35,048,537 km (0.108 R)
• M29: 37,932,634 km (0.102 R)
• M30: 38,882,581 km (0.074 R)
• M31: 40,407,133 km (0.036 R)
• M32: 44,168,023 km (0.108 R)
• M33: 47,215,182 km (0.068 R)
• M34: 49,590,348 km (0.057 R)
• M35: 53,216,151 km (0.064 R)
• M36: 60,437,839 km (0.044 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 186 - 12,958 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit