🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.87

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.56 AU - 0.68 AU

Year: 315 Days

Day: 39.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 1.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,483,841 km

• M1: 84,373 km (0.109 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.29

Radius: 1.39

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.62 AU - 0.68 AU

Year: 338 Days

Day: 15.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 41,483,841 km

• M1: 87,515 km (0.054 R)
• M2: 179,817 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139.3

Radius: 14.8

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.78 AU - 0.96 AU

Year: 524 Days

Day: 6 Hours

Environment

Temp: -149 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 41,483,841 km

• M1: 189,690 km (0.052 R)
• M2: 899,382 km (0.092 R)
• M3: 1,480,271 km (0.099 R)
• M4: 2,644,741 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 188.8

Radius: 10.5

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 1.25 AU - 1.61 AU

Year: 1104 Days

Day: 14.2 Hours

Environment

Temp: -169 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 41,483,841 km

• M1: 131,048 km (0.099 R)
• M2: 623,524 km (0.099 R)
• M3: 1,290,581 km (0.115 R)
• M4: 1,818,661 km (0.034 R)
• M5: 2,184,877 km (0.08 R)
• M6: 2,642,796 km (0.092 R)
• M7: 4,234,218 km (0.106 R)
• M8: 4,934,037 km (0.113 R)
• M9: 5,929,312 km (0.102 R)
• M10: 6,949,270 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 916.7

Radius: 11.9

Gravity: 6.47 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 2.08 AU - 2.26 AU

Year: 2064 Days

Day: 12.5 Hours

Environment

Temp: -184 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 41,483,841 km

• M1: 148,401 km (0.03 R)
• M2: 793,766 km (0.112 R)
• M3: 1,552,826 km (0.108 R)
• M4: 2,096,913 km (0.061 R)
• M5: 2,795,984 km (0.085 R)
• M6: 3,448,680 km (0.081 R)
• M7: 4,061,433 km (0.065 R)
• M8: 5,035,764 km (0.034 R)
• M9: 5,651,957 km (0.092 R)
• M10: 8,865,768 km (0.07 R)
• M11: 9,308,279 km (0.091 R)
• M12: 10,687,571 km (0.061 R)
• M13: 11,869,245 km (0.099 R)
• M14: 12,618,880 km (0.05 R)
• M15: 14,678,543 km (0.073 R)
• M16: 15,299,225 km (0.069 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 908

Radius: 10.2

Gravity: 8.73 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 3.15 AU - 4.55 AU

Year: 4878 Days

Day: 12.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 41,483,841 km

• M1: 127,009 km (0.087 R)
• M2: 672,143 km (0.11 R)
• M3: 1,095,056 km (0.091 R)
• M4: 1,473,090 km (0.071 R)
• M5: 1,882,091 km (0.11 R)
• M6: 2,933,165 km (0.081 R)
• M7: 3,950,431 km (0.083 R)
• M8: 4,965,303 km (0.101 R)
• M9: 5,682,774 km (0.103 R)
• M10: 6,082,350 km (0.119 R)
• M11: 6,566,748 km (0.098 R)
• M12: 8,061,380 km (0.029 R)
• M13: 9,385,621 km (0.12 R)
• M14: 10,481,575 km (0.09 R)
• M15: 13,619,390 km (0.112 R)
• M16: 14,848,636 km (0.085 R)
• M17: 17,591,064 km (0.117 R)
• M18: 18,243,460 km (0.063 R)
• M19: 19,320,715 km (0.089 R)
• M20: 19,945,136 km (0.107 R)
• M21: 20,368,797 km (0.082 R)
• M22: 20,798,442 km (0.065 R)
• M23: 21,454,130 km (0.09 R)
• M24: 22,730,499 km (0.031 R)
• M25: 23,898,110 km (0.109 R)
• M26: 25,848,717 km (0.103 R)
• M27: 27,727,965 km (0.099 R)
• M28: 29,880,230 km (0.079 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 943.2

Radius: 13.4

Gravity: 5.25 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 3.41 AU - 5.57 AU

Year: 6143 Days

Day: 6.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 41,483,841 km

• M1: 168,746 km (0.11 R)
• M2: 872,604 km (0.09 R)
• M3: 1,533,079 km (0.041 R)
• M4: 1,956,740 km (0.106 R)
• M5: 2,585,650 km (0.1 R)
• M6: 3,029,656 km (0.12 R)
• M7: 4,409,996 km (0.054 R)
• M8: 5,687,113 km (0.059 R)
• M9: 8,371,646 km (0.096 R)
• M10: 9,355,402 km (0.102 R)
• M11: 11,197,550 km (0.089 R)
• M12: 12,019,441 km (0.111 R)
• M13: 12,771,170 km (0.114 R)
• M14: 13,214,728 km (0.087 R)
• M15: 13,783,499 km (0.116 R)
• M16: 14,368,726 km (0.073 R)
• M17: 15,588,846 km (0.097 R)
• M18: 16,031,955 km (0.116 R)
• M19: 18,304,795 km (0.111 R)
• M20: 21,789,827 km (0.09 R)
• M21: 22,908,072 km (0.081 R)
• M22: 23,896,614 km (0.042 R)
• M23: 29,946,651 km (0.096 R)
• M24: 33,795,655 km (0.098 R)
• M25: 36,946,485 km (0.051 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 639.3

Radius: 15

Gravity: 2.84 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 4.33 AU - 4.81 AU

Year: 6308 Days

Day: 12 Hours

Environment

Temp: -206 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 41,483,841 km

• M1: 186,549 km (0.073 R)
• M2: 709,244 km (0.096 R)
• M3: 1,474,885 km (0.065 R)
• M4: 2,446,075 km (0.119 R)
• M5: 3,226,527 km (0.105 R)
• M6: 4,242,745 km (0.028 R)
• M7: 5,145,120 km (0.109 R)
• M8: 9,043,640 km (0.073 R)
• M9: 11,200,542 km (0.075 R)
• M10: 12,764,588 km (0.093 R)
• M11: 21,830,368 km (0.073 R)
• M12: 23,938,651 km (0.062 R)
• M13: 28,016,839 km (0.08 R)
• M14: 33,941,962 km (0.104 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 847

Radius: 13.6

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 4.13 AU - 5.89 AU

Year: 7241 Days

Day: 7.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 41,483,841 km

• M1: 169,195 km (0.102 R)
• M2: 1,262,456 km (0.083 R)
• M3: 1,940,434 km (0.1 R)
• M4: 2,508,457 km (0.075 R)
• M5: 3,251,959 km (0.115 R)
• M6: 4,941,068 km (0.116 R)
• M7: 6,319,912 km (0.049 R)
• M8: 9,318,003 km (0.056 R)
• M9: 10,063,299 km (0.112 R)
• M10: 11,203,833 km (0.047 R)
• M11: 11,993,112 km (0.075 R)
• M12: 14,769,499 km (0.12 R)
• M13: 15,270,801 km (0.109 R)
• M14: 17,252,524 km (0.098 R)
• M15: 19,474,950 km (0.068 R)
• M16: 21,963,211 km (0.101 R)
• M17: 23,452,458 km (0.103 R)
• M18: 25,273,812 km (0.065 R)
• M19: 27,187,767 km (0.032 R)
• M20: 27,941,741 km (0.032 R)
• M21: 29,491,575 km (0.111 R)
• M22: 32,026,660 km (0.1 R)
• M23: 32,550,701 km (0.11 R)
• M24: 33,831,558 km (0.101 R)
• M25: 35,034,924 km (0.049 R)
• M26: 35,479,529 km (0.106 R)
• M27: 39,292,778 km (0.075 R)
• M28: 40,867,146 km (0.12 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 486 - 17,133 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit