🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.95

Radius: 1.31

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.51 AU - 0.59 AU

Year: 263 Days

Day: 13.8 Hours

Environment

Temp: -116 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.68

Radius: 0.86

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.53 AU - 0.73 AU

Year: 323 Days

Day: 17 Hours

Environment

Temp: -136 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 384.3

Radius: 14.7

Gravity: 1.78 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.65 AU - 0.79 AU

Year: 394 Days

Day: 8.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 48,507,520 km

• M1: 182,809 km (0.096 R)
• M2: 804,837 km (0.114 R)
• M3: 1,633,908 km (0.099 R)
• M4: 2,246,062 km (0.066 R)
• M5: 3,190,324 km (0.044 R)
• M6: 3,720,649 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 166.2

Radius: 12.4

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 1.52 AU - 2.04 AU

Year: 1533 Days

Day: 9.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 48,507,520 km

• M1: 154,235 km (0.034 R)
• M2: 549,922 km (0.11 R)
• M3: 1,309,729 km (0.067 R)
• M4: 1,711,699 km (0.114 R)
• M5: 2,267,305 km (0.116 R)
• M6: 2,661,197 km (0.092 R)
• M7: 3,603,962 km (0.082 R)
• M8: 5,503,706 km (0.077 R)
• M9: 6,203,973 km (0.097 R)
• M10: 6,746,116 km (0.072 R)
• M11: 7,806,466 km (0.079 R)
• M12: 8,290,116 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 654.8

Radius: 9.8

Gravity: 6.82 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 1.99 AU - 2.43 AU

Year: 2121 Days

Day: 7.9 Hours

Environment

Temp: -188 °C

Axial Tilt: 167.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 48,507,520 km

• M1: 122,371 km (0.11 R)
• M2: 581,038 km (0.095 R)
• M3: 906,264 km (0.097 R)
• M4: 1,809,087 km (0.05 R)
• M5: 2,972,210 km (0.098 R)
• M6: 4,431,388 km (0.102 R)
• M7: 4,807,178 km (0.083 R)
• M8: 5,410,805 km (0.104 R)
• M9: 5,767,447 km (0.097 R)
• M10: 7,557,086 km (0.039 R)
• M11: 8,594,547 km (0.048 R)
• M12: 9,552,273 km (0.106 R)
• M13: 9,968,753 km (0.082 R)
• M14: 11,639,612 km (0.095 R)
• M15: 15,385,991 km (0.114 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 557.9

Radius: 6

Gravity: 15.5 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 6.86 AU - 10.42 AU

Year: 16398 Days

Day: 20 Hours

Environment

Temp: -237 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 48,507,520 km

• M1: 78,090 km (0.033 R)
• M2: 276,158 km (0.11 R)
• M3: 782,846 km (0.117 R)
• M4: 1,638,396 km (0.12 R)
• M5: 2,208,813 km (0.115 R)
• M6: 4,359,581 km (0.037 R)
• M7: 4,582,781 km (0.101 R)
• M8: 5,121,932 km (0.117 R)
• M9: 5,702,372 km (0.077 R)
• M10: 6,570,787 km (0.113 R)
• M11: 12,205,092 km (0.066 R)
• M12: 14,395,653 km (0.098 R)
• M13: 18,523,508 km (0.081 R)
• M14: 24,359,919 km (0.061 R)
• M15: 25,064,375 km (0.109 R)
• M16: 25,782,146 km (0.102 R)
• M17: 27,044,453 km (0.101 R)
• M18: 27,366,387 km (0.084 R)
• M19: 28,902,608 km (0.066 R)
• M20: 34,605,428 km (0.105 R)
• M21: 34,858,099 km (0.102 R)
• M22: 41,582,075 km (0.061 R)
• M23: 45,096,129 km (0.1 R)
• M24: 48,486,914 km (0.096 R)
• M25: 52,043,603 km (0.072 R)
• M26: 56,292,033 km (0.092 R)
• M27: 56,641,643 km (0.11 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 209

Radius: 7.5

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 7.44 AU - 11.24 AU

Year: 18430 Days

Day: 16.5 Hours

Environment

Temp: -229 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 48,507,520 km

• M1: 94,097 km (0.034 R)
• M2: 335,398 km (0.088 R)
• M3: 622,926 km (0.11 R)
• M4: 994,227 km (0.1 R)
• M5: 1,336,208 km (0.116 R)
• M6: 1,577,809 km (0.098 R)
• M7: 2,204,773 km (0.105 R)
• M8: 2,447,571 km (0.095 R)
• M9: 3,077,079 km (0.061 R)
• M10: 3,503,881 km (0.074 R)
• M11: 4,504,990 km (0.12 R)
• M12: 6,900,651 km (0.075 R)
• M13: 9,153,894 km (0.065 R)
• M14: 9,637,544 km (0.092 R)
• M15: 14,075,514 km (0.079 R)
• M16: 15,791,252 km (0.057 R)
• M17: 16,206,087 km (0.072 R)
• M18: 17,421,270 km (0.115 R)
• M19: 17,864,230 km (0.095 R)
• M20: 20,112,237 km (0.077 R)
• M21: 22,716,736 km (0.082 R)
• M22: 24,054,141 km (0.067 R)
• M23: 24,788,517 km (0.104 R)
• M24: 39,921,538 km (0.07 R)
• M25: 41,080,323 km (0.033 R)
• M26: 42,393,942 km (0.059 R)
• M27: 46,785,388 km (0.111 R)
• M28: 48,507,558 km (0.081 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 396 - 16,368 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit