🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.84

Radius: 1.28

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.57 AU - 0.65 AU

Year: 174 Days

Day: 18.9 Hours

Environment

Temp: 150 °C

Axial Tilt: 37.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 84,108,302 km

• M1: 137,780 km (0.09 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.59

Radius: 0.81

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.56 AU - 0.7 AU

Year: 183 Days

Day: 25.8 Hours

Environment

Temp: 151 °C

Axial Tilt: 36.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.41

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.9 AU - 1.11 AU

Year: 365 Days

Day: 35.3 Hours

Environment

Temp: 32 °C

Axial Tilt: 28.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 84,108,302 km

• M1: 123,269 km (0.12 R)
• M2: 534,064 km (0.116 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.69

Radius: 1.49

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 1.16 AU - 1.62 AU

Year: 599 Days

Day: 23.8 Hours

Environment

Temp: -34 °C

Axial Tilt: 6.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 84,108,302 km

• M1: 266,434 km (0.113 R)
• M2: 802,293 km (0.071 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.7

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 2.25 AU - 2.67 AU

Year: 1409 Days

Day: 24.9 Hours

Environment

Temp: -91 °C

Axial Tilt: 3.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.42

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 2.76 AU - 4.02 AU

Year: 2280 Days

Day: 30.1 Hours

Environment

Temp: -113 °C

Axial Tilt: 11.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,108,302 km

• M1: 136,433 km (0.086 R)

Asteroid Belt

Center: 4.5 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 5.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 658.2

Radius: 12.1

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 4.89 AU - 6.31 AU

Year: 4840 Days

Day: 5.1 Hours

Environment

Temp: -139 °C

Axial Tilt: 42.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 84,108,302 km

• M1: 150,495 km (0.09 R)
• M2: 631,453 km (0.087 R)
• M3: 1,503,907 km (0.105 R)
• M4: 1,979,329 km (0.084 R)
• M5: 2,955,605 km (0.088 R)
• M6: 5,665,271 km (0.087 R)
• M7: 6,230,153 km (0.06 R)
• M8: 6,931,019 km (0.086 R)
• M9: 8,414,731 km (0.096 R)
• M10: 9,597,302 km (0.1 R)
• M11: 10,977,791 km (0.101 R)
• M12: 12,934,830 km (0.11 R)
• M13: 14,398,496 km (0.056 R)
• M14: 16,203,394 km (0.117 R)
• M15: 17,652,698 km (0.11 R)
• M16: 18,601,448 km (0.118 R)
• M17: 20,531,709 km (0.09 R)
• M18: 21,794,914 km (0.055 R)
• M19: 22,591,971 km (0.12 R)
• M20: 24,475,857 km (0.098 R)
• M21: 26,462,218 km (0.104 R)
• M22: 28,725,933 km (0.074 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.8

Radius: 13.9

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 5.45 AU - 7.15 AU

Year: 5776 Days

Day: 14.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 84,108,302 km

• M1: 176,226 km (0.05 R)
• M2: 617,091 km (0.064 R)
• M3: 1,081,742 km (0.112 R)
• M4: 1,743,264 km (0.094 R)
• M5: 2,292,438 km (0.03 R)
• M6: 2,834,730 km (0.117 R)
• M7: 3,306,562 km (0.089 R)
• M8: 3,938,463 km (0.12 R)
• M9: 6,482,375 km (0.108 R)
• M10: 8,028,768 km (0.106 R)
• M11: 8,497,159 km (0.105 R)
• M12: 9,768,891 km (0.117 R)
• M13: 10,770,897 km (0.03 R)
• M14: 11,840,223 km (0.053 R)
• M15: 13,225,649 km (0.11 R)
• M16: 14,930,615 km (0.115 R)
• M17: 15,585,555 km (0.119 R)
• M18: 16,202,796 km (0.117 R)
• M19: 18,091,469 km (0.051 R)
• M20: 18,773,336 km (0.103 R)
• M21: 19,280,024 km (0.107 R)
• M22: 20,855,140 km (0.096 R)
• M23: 22,871,121 km (0.082 R)
• M24: 24,260,287 km (0.098 R)
• M25: 25,938,476 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 706.1

Radius: 6.7

Gravity: 15.73 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 11.11 AU - 18.13 AU

Year: 20418 Days

Day: 24.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 84,108,302 km

• M1: 83,326 km (0.076 R)
• M2: 335,698 km (0.094 R)
• M3: 993,928 km (0.084 R)
• M4: 1,374,056 km (0.111 R)
• M5: 2,061,608 km (0.036 R)
• M6: 2,682,290 km (0.104 R)
• M7: 3,307,759 km (0.114 R)
• M8: 3,776,149 km (0.067 R)
• M9: 6,446,920 km (0.103 R)
• M10: 7,859,872 km (0.077 R)
• M11: 10,470,505 km (0.108 R)
• M12: 13,034,911 km (0.045 R)
• M13: 15,588,397 km (0.116 R)
• M14: 16,982,201 km (0.111 R)
• M15: 24,560,530 km (0.04 R)
• M16: 29,748,584 km (0.09 R)
• M17: 32,013,496 km (0.076 R)
• M18: 33,187,988 km (0.088 R)
• M19: 38,318,747 km (0.078 R)
• M20: 62,095,084 km (0.047 R)
• M21: 70,692,474 km (0.116 R)

Planet 10 - Ice Giant

Semi-Major Axis: 15.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 777.6

Radius: 3.7

Gravity: 56.8 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 11.66 AU - 18.9 AU

Year: 21816 Days

Day: 20.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 84,108,302 km

• M1: 46,076 km (0.111 R)
• M2: 170,542 km (0.042 R)
• M3: 359,035 km (0.113 R)
• M4: 847,023 km (0.093 R)
• M5: 1,016,368 km (0.077 R)
• M6: 1,343,838 km (0.109 R)
• M7: 2,138,950 km (0.086 R)
• M8: 2,407,628 km (0.091 R)
• M9: 2,648,481 km (0.097 R)
• M10: 3,379,266 km (0.096 R)
• M11: 4,443,655 km (0.111 R)
• M12: 5,547,987 km (0.112 R)
• M13: 8,552,660 km (0.101 R)
• M14: 15,047,302 km (0.045 R)
• M15: 17,310,568 km (0.065 R)
• M16: 23,345,346 km (0.038 R)
• M17: 25,784,390 km (0.119 R)
• M18: 33,834,550 km (0.075 R)
• M19: 36,656,714 km (0.047 R)
• M20: 37,533,059 km (0.114 R)
• M21: 47,420,131 km (0.11 R)
• M22: 59,908,562 km (0.108 R)
• M23: 64,021,456 km (0.052 R)
• M24: 71,664,710 km (0.102 R)
• M25: 76,057,801 km (0.08 R)
• M26: 79,893,640 km (0.089 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 340 - 18,292 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit