🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.23

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.47 AU - 0.61 AU

Year: 256 Days

Day: 47 Hours

Environment

Temp: -123 °C

Axial Tilt: 102.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 20,412,898 km

• M1: 25,432 km (0.098 R)
• M2: 52,210 km (0.067 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 330.5

Radius: 12.9

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.72 AU - 0.94 AU

Year: 488 Days

Day: 13.5 Hours

Environment

Temp: -139 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 20,412,898 km

• M1: 160,668 km (0.112 R)
• M2: 600,486 km (0.089 R)
• M3: 1,060,799 km (0.103 R)
• M4: 1,520,363 km (0.096 R)
• M5: 2,261,022 km (0.066 R)
• M6: 2,687,077 km (0.101 R)
• M7: 4,224,195 km (0.108 R)
• M8: 4,792,368 km (0.059 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 953.1

Radius: 14.7

Gravity: 4.41 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.01 AU - 1.07 AU

Year: 685 Days

Day: 9.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 20,412,898 km

• M1: 187,596 km (0.09 R)
• M2: 880,383 km (0.069 R)
• M3: 1,346,680 km (0.07 R)
• M4: 1,903,633 km (0.096 R)
• M5: 2,408,227 km (0.038 R)
• M6: 3,257,344 km (0.104 R)
• M7: 4,862,978 km (0.084 R)
• M8: 5,420,529 km (0.069 R)
• M9: 6,264,560 km (0.072 R)
• M10: 7,015,093 km (0.103 R)
• M11: 8,290,265 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 564.2

Radius: 11.8

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 2.24 AU - 2.84 AU

Year: 2614 Days

Day: 7.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 20,412,898 km

• M1: 147,952 km (0.067 R)
• M2: 529,876 km (0.086 R)
• M3: 975,827 km (0.117 R)
• M4: 1,966,913 km (0.058 R)
• M5: 2,798,527 km (0.091 R)
• M6: 3,295,491 km (0.036 R)
• M7: 3,683,548 km (0.075 R)
• M8: 4,201,755 km (0.113 R)
• M9: 4,834,255 km (0.069 R)
• M10: 5,800,508 km (0.094 R)
• M11: 6,289,992 km (0.11 R)
• M12: 8,272,313 km (0.097 R)
• M13: 9,028,531 km (0.038 R)
• M14: 10,490,251 km (0.114 R)
• M15: 10,946,525 km (0.103 R)
• M16: 12,228,280 km (0.111 R)
• M17: 13,209,791 km (0.073 R)
• M18: 13,697,331 km (0.1 R)
• M19: 15,572,540 km (0.082 R)
• M20: 16,116,927 km (0.073 R)
• M21: 16,571,704 km (0.075 R)
• M22: 17,139,278 km (0.049 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 572.1

Radius: 12.6

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 2.48 AU - 2.86 AU

Year: 2817 Days

Day: 7.1 Hours

Environment

Temp: -207 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 20,412,898 km

• M1: 156,629 km (0.072 R)
• M2: 676,182 km (0.109 R)
• M3: 1,633,758 km (0.098 R)
• M4: 2,167,075 km (0.073 R)
• M5: 2,694,108 km (0.119 R)
• M6: 3,086,503 km (0.107 R)
• M7: 3,572,098 km (0.106 R)
• M8: 3,989,027 km (0.063 R)
• M9: 6,074,122 km (0.116 R)
• M10: 7,338,374 km (0.112 R)
• M11: 8,016,950 km (0.099 R)
• M12: 8,437,470 km (0.095 R)
• M13: 9,861,043 km (0.094 R)
• M14: 10,420,090 km (0.083 R)
• M15: 11,398,759 km (0.111 R)
• M16: 13,538,906 km (0.106 R)
• M17: 14,848,187 km (0.074 R)
• M18: 16,549,414 km (0.096 R)
• M19: 17,555,011 km (0.091 R)
• M20: 18,377,201 km (0.084 R)
• M21: 19,053,383 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 72.1

Radius: 9.7

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.84 AU - 3.94 AU

Year: 4030 Days

Day: 11.2 Hours

Environment

Temp: -207 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 20,412,898 km

• M1: 125,064 km (0.079 R)
• M2: 428,149 km (0.041 R)
• M3: 791,522 km (0.092 R)
• M4: 2,543,463 km (0.11 R)
• M5: 3,371,188 km (0.047 R)
• M6: 3,914,527 km (0.115 R)
• M7: 5,967,908 km (0.084 R)
• M8: 6,715,448 km (0.113 R)
• M9: 7,112,032 km (0.111 R)
• M10: 7,524,175 km (0.088 R)
• M11: 8,682,511 km (0.111 R)
• M12: 11,314,685 km (0.063 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 449.9

Radius: 8.3

Gravity: 6.53 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 4.03 AU - 4.51 AU

Year: 5697 Days

Day: 6.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 20,412,898 km

• M1: 104,419 km (0.05 R)
• M2: 394,789 km (0.115 R)
• M3: 671,096 km (0.071 R)
• M4: 1,619,846 km (0.075 R)
• M5: 2,113,070 km (0.111 R)
• M6: 2,403,439 km (0.055 R)
• M7: 2,826,353 km (0.12 R)
• M8: 3,648,243 km (0.078 R)
• M9: 6,327,691 km (0.077 R)
• M10: 9,273,572 km (0.103 R)
• M11: 11,617,771 km (0.08 R)
• M12: 12,187,739 km (0.072 R)
• M13: 14,384,733 km (0.073 R)
• M14: 15,321,814 km (0.099 R)
• M15: 17,256,114 km (0.104 R)
• M16: 19,282,118 km (0.078 R)
• M17: 22,757,277 km (0.076 R)
• M18: 24,874,984 km (0.088 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.2

Radius: 10.7

Gravity: 0.76 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 4.2 AU - 6.32 AU

Year: 7789 Days

Day: 12.9 Hours

Environment

Temp: -228 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 20,412,898 km

• M1: 133,142 km (0.105 R)
• M2: 930,200 km (0.08 R)
• M3: 1,281,306 km (0.078 R)
• M4: 2,714,005 km (0.104 R)
• M5: 3,238,495 km (0.118 R)
• M6: 4,781,597 km (0.03 R)
• M7: 5,884,283 km (0.084 R)
• M8: 9,831,123 km (0.114 R)
• M9: 18,075,312 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: 394 - 13,788 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit