🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.49 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.98 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.12

Radius: 0.43

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.93 AU - 1.03 AU

Year: 367 Days

Day: 39.5 Hours

Environment

Temp: 8 °C

Axial Tilt: 34.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.82

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 1.07 AU - 1.55 AU

Year: 568 Days

Day: 39.9 Hours

Environment

Temp: -34 °C

Axial Tilt: 16 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.99

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 3.66 AU - 4.22 AU

Year: 2962 Days

Day: 37.8 Hours

Environment

Temp: -142 °C

Axial Tilt: 33 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 3.53 AU - 4.47 AU

Year: 3030 Days

Day: 47.7 Hours

Environment

Temp: -135 °C

Axial Tilt: 8.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.29 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 4.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 640.7

Radius: 11.3

Gravity: 5.02 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 3.65 AU - 5.51 AU

Year: 3712 Days

Day: 10.3 Hours

Environment

Temp: -151 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 74,521,275 km

• M1: 140,772 km (0.109 R)
• M2: 494,571 km (0.107 R)
• M3: 850,763 km (0.107 R)
• M4: 1,254,378 km (0.027 R)
• M5: 1,787,545 km (0.116 R)
• M6: 2,852,981 km (0.059 R)
• M7: 3,371,487 km (0.105 R)
• M8: 3,806,219 km (0.103 R)
• M9: 5,009,584 km (0.091 R)
• M10: 5,418,584 km (0.033 R)
• M11: 5,905,526 km (0.077 R)
• M12: 6,510,350 km (0.071 R)
• M13: 7,316,084 km (0.088 R)
• M14: 8,397,527 km (0.111 R)
• M15: 10,336,914 km (0.106 R)
• M16: 11,433,017 km (0.089 R)
• M17: 14,768,152 km (0.034 R)
• M18: 15,559,226 km (0.104 R)
• M19: 17,689,499 km (0.026 R)
• M20: 21,438,572 km (0.105 R)
• M21: 21,840,392 km (0.057 R)
• M22: 23,427,475 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 742.2

Radius: 12.9

Gravity: 4.46 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 5.05 AU - 6.09 AU

Year: 4979 Days

Day: 8 Hours

Environment

Temp: -161 °C

Axial Tilt: 46.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 74,521,275 km

• M1: 160,519 km (0.079 R)
• M2: 647,011 km (0.1 R)
• M3: 1,187,657 km (0.084 R)
• M4: 2,296,477 km (0.09 R)
• M5: 4,075,794 km (0.117 R)
• M6: 5,195,833 km (0.1 R)
• M7: 7,492,909 km (0.075 R)
• M8: 8,301,485 km (0.091 R)
• M9: 11,691,672 km (0.062 R)
• M10: 12,376,531 km (0.112 R)
• M11: 12,779,847 km (0.065 R)
• M12: 13,296,259 km (0.099 R)
• M13: 17,000,003 km (0.096 R)
• M14: 17,625,172 km (0.053 R)
• M15: 20,350,247 km (0.114 R)
• M16: 22,738,727 km (0.099 R)
• M17: 23,729,214 km (0.104 R)
• M18: 27,721,981 km (0.091 R)
• M19: 30,834,365 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243.7

Radius: 9.3

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 7.77 AU - 9.45 AU

Year: 9569 Days

Day: 9.8 Hours

Environment

Temp: -171 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 74,521,275 km

• M1: 115,789 km (0.104 R)
• M2: 456,124 km (0.091 R)
• M3: 860,487 km (0.11 R)
• M4: 1,488,798 km (0.104 R)
• M5: 2,533,141 km (0.088 R)
• M6: 5,148,261 km (0.03 R)
• M7: 5,887,275 km (0.115 R)
• M8: 7,575,337 km (0.117 R)
• M9: 9,308,877 km (0.078 R)
• M10: 10,540,816 km (0.091 R)
• M11: 17,841,491 km (0.11 R)
• M12: 18,170,008 km (0.055 R)
• M13: 19,664,491 km (0.112 R)
• M14: 20,441,651 km (0.08 R)
• M15: 21,019,548 km (0.088 R)
• M16: 22,818,911 km (0.118 R)
• M17: 28,920,709 km (0.061 R)
• M18: 30,764,653 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 12.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 899.2

Radius: 4.6

Gravity: 42.5 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 12.45 AU - 12.73 AU

Year: 16919 Days

Day: 15.2 Hours

Environment

Temp: -192 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 74,521,275 km

• M1: 57,446 km (0.091 R)
• M2: 410,347 km (0.096 R)
• M3: 2,047,696 km (0.113 R)
• M4: 3,921,559 km (0.092 R)
• M5: 4,577,096 km (0.078 R)
• M6: 5,417,986 km (0.079 R)
• M7: 7,788,215 km (0.104 R)
• M8: 8,979,762 km (0.079 R)
• M9: 9,143,571 km (0.107 R)
• M10: 12,177,865 km (0.103 R)
• M11: 15,272,895 km (0.116 R)
• M12: 18,236,878 km (0.037 R)
• M13: 18,412,057 km (0.033 R)
• M14: 32,487,721 km (0.085 R)
• M15: 34,318,051 km (0.074 R)
• M16: 45,144,897 km (0.049 R)
• M17: 48,754,694 km (0.084 R)
• M18: 50,802,390 km (0.108 R)
• M19: 58,041,431 km (0.111 R)
• M20: 59,183,311 km (0.077 R)
• M21: 68,651,061 km (0.085 R)
• M22: 71,654,837 km (0.086 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 255 - 10,600 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit