🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.55

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.43 AU - 0.69 AU

Year: 271 Days

Day: 12.7 Hours

Environment

Temp: -126 °C

Axial Tilt: 32.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,599,246 km

• M1: 782,546 km (0.113 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.37

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.46 AU - 0.7 AU

Year: 285 Days

Day: 18.6 Hours

Environment

Temp: -135 °C

Axial Tilt: 7.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 981.2

Radius: 14.6

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.69 AU - 0.91 AU

Year: 462 Days

Day: 7.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 53,599,246 km

• M1: 181,911 km (0.055 R)
• M2: 799,002 km (0.045 R)
• M3: 1,449,603 km (0.091 R)
• M4: 2,016,579 km (0.089 R)
• M5: 2,721,036 km (0.058 R)
• M6: 3,768,969 km (0.079 R)
• M7: 5,287,387 km (0.104 R)
• M8: 5,755,479 km (0.086 R)
• M9: 6,735,943 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 542.2

Radius: 11

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 1.14 AU - 1.42 AU

Year: 935 Days

Day: 6.4 Hours

Environment

Temp: -180 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 53,599,246 km

• M1: 136,882 km (0.079 R)
• M2: 842,236 km (0.104 R)
• M3: 1,201,869 km (0.115 R)
• M4: 1,892,263 km (0.064 R)
• M5: 2,517,583 km (0.101 R)
• M6: 3,092,637 km (0.096 R)
• M7: 3,453,317 km (0.067 R)
• M8: 4,244,540 km (0.1 R)
• M9: 4,900,826 km (0.118 R)
• M10: 5,899,691 km (0.119 R)
• M11: 6,247,506 km (0.12 R)
• M12: 6,984,425 km (0.104 R)
• M13: 8,920,072 km (0.054 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 557

Radius: 13.6

Gravity: 3.01 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.44 AU - 2.22 AU

Year: 1598 Days

Day: 5.7 Hours

Environment

Temp: -183 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 53,599,246 km

• M1: 169,195 km (0.087 R)
• M2: 751,131 km (0.099 R)
• M3: 1,262,157 km (0.086 R)
• M4: 1,804,898 km (0.11 R)
• M5: 2,240,228 km (0.093 R)
• M6: 2,720,288 km (0.049 R)
• M7: 4,134,137 km (0.078 R)
• M8: 5,044,590 km (0.104 R)
• M9: 5,547,837 km (0.054 R)
• M10: 6,084,594 km (0.084 R)
• M11: 6,754,493 km (0.075 R)
• M12: 7,210,917 km (0.117 R)
• M13: 8,529,771 km (0.081 R)
• M14: 9,432,295 km (0.093 R)
• M15: 11,858,474 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 980.4

Radius: 14.3

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 2.13 AU - 2.27 AU

Year: 2107 Days

Day: 12.2 Hours

Environment

Temp: -193 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 53,599,246 km

• M1: 180,116 km (0.117 R)
• M2: 877,541 km (0.088 R)
• M3: 2,034,232 km (0.115 R)
• M4: 2,518,181 km (0.102 R)
• M5: 3,541,281 km (0.1 R)
• M6: 4,189,488 km (0.115 R)
• M7: 4,759,755 km (0.074 R)
• M8: 5,262,404 km (0.098 R)
• M9: 6,511,547 km (0.118 R)
• M10: 7,133,126 km (0.107 R)
• M11: 7,763,381 km (0.099 R)
• M12: 9,274,170 km (0.092 R)
• M13: 10,025,900 km (0.101 R)
• M14: 11,814,791 km (0.089 R)
• M15: 13,536,064 km (0.114 R)
• M16: 15,077,820 km (0.05 R)
• M17: 18,843,797 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 340.3

Radius: 10.4

Gravity: 3.15 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 3.32 AU - 3.96 AU

Year: 4484 Days

Day: 9 Hours

Environment

Temp: -205 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 53,599,246 km

• M1: 129,402 km (0.076 R)
• M2: 491,728 km (0.103 R)
• M3: 1,143,825 km (0.111 R)
• M4: 1,631,066 km (0.107 R)
• M5: 2,090,929 km (0.041 R)
• M6: 2,778,780 km (0.104 R)
• M7: 3,149,484 km (0.097 R)
• M8: 3,515,101 km (0.057 R)
• M9: 4,421,066 km (0.082 R)
• M10: 5,980,025 km (0.116 R)
• M11: 7,811,253 km (0.096 R)
• M12: 8,416,526 km (0.118 R)
• M13: 9,016,712 km (0.116 R)
• M14: 9,759,017 km (0.087 R)
• M15: 10,302,506 km (0.087 R)
• M16: 13,422,519 km (0.085 R)
• M17: 13,756,123 km (0.05 R)
• M18: 16,301,830 km (0.098 R)
• M19: 17,628,912 km (0.092 R)
• M20: 19,387,435 km (0.061 R)
• M21: 21,518,307 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 531.6

Radius: 4.9

Gravity: 22.14 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 6.93 AU - 7.81 AU

Year: 12919 Days

Day: 24.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 53,599,246 km

• M1: 61,036 km (0.055 R)
• M2: 308,321 km (0.112 R)
• M3: 755,619 km (0.089 R)
• M4: 1,122,732 km (0.102 R)
• M5: 1,661,284 km (0.102 R)
• M6: 2,725,972 km (0.119 R)
• M7: 3,132,879 km (0.107 R)
• M8: 4,181,410 km (0.084 R)
• M9: 4,659,824 km (0.101 R)
• M10: 5,274,372 km (0.084 R)
• M11: 6,352,374 km (0.104 R)
• M12: 7,483,933 km (0.118 R)
• M13: 9,374,102 km (0.058 R)
• M14: 9,982,367 km (0.069 R)
• M15: 10,724,821 km (0.08 R)
• M16: 16,039,884 km (0.12 R)
• M17: 16,470,426 km (0.066 R)
• M18: 16,761,693 km (0.105 R)
• M19: 21,294,509 km (0.05 R)
• M20: 24,447,733 km (0.095 R)
• M21: 28,312,444 km (0.098 R)
• M22: 29,365,164 km (0.083 R)
• M23: 50,698,718 km (0.105 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 276.6

Radius: 4.5

Gravity: 13.66 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 7.29 AU - 11.51 AU

Year: 18608 Days

Day: 17.9 Hours

Environment

Temp: -220 °C

Axial Tilt: 135 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 53,599,246 km

• M1: 60,886 km (0.043 R)
• M2: 209,287 km (0.117 R)
• M3: 423,212 km (0.072 R)
• M4: 1,193,941 km (0.041 R)
• M5: 1,545,496 km (0.079 R)
• M6: 2,471,656 km (0.049 R)
• M7: 4,432,884 km (0.075 R)
• M8: 4,585,923 km (0.039 R)
• M9: 4,870,308 km (0.075 R)
• M10: 5,301,749 km (0.114 R)
• M11: 6,316,770 km (0.038 R)
• M12: 6,829,442 km (0.084 R)
• M13: 9,012,973 km (0.036 R)
• M14: 10,502,967 km (0.046 R)
• M15: 11,108,689 km (0.064 R)
• M16: 13,636,444 km (0.074 R)
• M17: 14,091,970 km (0.074 R)
• M18: 17,416,932 km (0.107 R)
• M19: 20,714,518 km (0.084 R)
• M20: 21,841,140 km (0.118 R)
• M21: 29,794,510 km (0.099 R)
• M22: 36,918,660 km (0.108 R)
• M23: 38,829,324 km (0.091 R)
• M24: 48,171,711 km (0.119 R)
• M25: 50,450,536 km (0.086 R)
• M26: 52,641,247 km (0.074 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 486 - 19,241 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit