🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.96

Radius: 0.98

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.54 AU - 0.72 AU

Year: 318 Days

Day: 28.1 Hours

Environment

Temp: -126 °C

Axial Tilt: 47.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,308,735 km

• M1: 24,085 km (0.11 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 123.9

Radius: 11.6

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.59 AU - 0.95 AU

Year: 430 Days

Day: 13.4 Hours

Environment

Temp: -150 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 66,308,735 km

• M1: 144,212 km (0.075 R)
• M2: 541,843 km (0.062 R)
• M3: 1,096,702 km (0.11 R)
• M4: 1,535,024 km (0.108 R)
• M5: 1,904,530 km (0.075 R)
• M6: 2,455,350 km (0.078 R)
• M7: 3,011,555 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 595.9

Radius: 9.5

Gravity: 6.6 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.29 AU - 1.43 AU

Year: 1008 Days

Day: 6.4 Hours

Environment

Temp: -167 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 66,308,735 km

• M1: 118,182 km (0.067 R)
• M2: 473,328 km (0.058 R)
• M3: 778,507 km (0.096 R)
• M4: 1,249,441 km (0.079 R)
• M5: 1,560,007 km (0.092 R)
• M6: 2,099,307 km (0.078 R)
• M7: 2,590,886 km (0.084 R)
• M8: 2,934,213 km (0.111 R)
• M9: 3,420,705 km (0.049 R)
• M10: 4,300,340 km (0.065 R)
• M11: 4,624,968 km (0.064 R)
• M12: 5,171,000 km (0.065 R)
• M13: 5,638,344 km (0.11 R)
• M14: 6,070,233 km (0.108 R)
• M15: 7,116,969 km (0.029 R)
• M16: 7,820,378 km (0.11 R)
• M17: 8,384,362 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 254.5

Radius: 13

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 4.68 AU - 6.5 AU

Year: 8403 Days

Day: 9.7 Hours

Environment

Temp: -228 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 66,308,735 km

• M1: 161,715 km (0.095 R)
• M2: 860,786 km (0.089 R)
• M3: 1,415,046 km (0.085 R)
• M4: 3,113,431 km (0.077 R)
• M5: 3,863,814 km (0.076 R)
• M6: 4,654,738 km (0.074 R)
• M7: 7,158,408 km (0.092 R)
• M8: 7,613,784 km (0.072 R)
• M9: 9,383,227 km (0.119 R)
• M10: 9,886,923 km (0.098 R)
• M11: 11,987,277 km (0.104 R)
• M12: 14,758,578 km (0.069 R)
• M13: 17,614,850 km (0.113 R)
• M14: 19,374,121 km (0.097 R)
• M15: 21,247,685 km (0.083 R)
• M16: 23,391,721 km (0.066 R)
• M17: 23,930,274 km (0.105 R)
• M18: 25,920,973 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 908.9

Radius: 8.9

Gravity: 11.47 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 5.7 AU - 5.94 AU

Year: 8927 Days

Day: 10.5 Hours

Environment

Temp: -216 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 66,308,735 km

• M1: 110,702 km (0.095 R)
• M2: 394,789 km (0.119 R)
• M3: 1,191,697 km (0.077 R)
• M4: 1,604,736 km (0.098 R)
• M5: 2,441,288 km (0.051 R)
• M6: 2,978,643 km (0.097 R)
• M7: 4,610,008 km (0.072 R)
• M8: 5,465,409 km (0.066 R)
• M9: 5,948,909 km (0.093 R)
• M10: 7,782,829 km (0.085 R)
• M11: 9,470,443 km (0.086 R)
• M12: 12,704,450 km (0.079 R)
• M13: 23,054,977 km (0.114 R)
• M14: 29,507,881 km (0.12 R)
• M15: 30,457,229 km (0.074 R)
• M16: 33,997,911 km (0.065 R)
• M17: 35,867,137 km (0.095 R)
• M18: 40,321,563 km (0.101 R)
• M19: 45,270,111 km (0.086 R)
• M20: 48,833,831 km (0.117 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 49.7

Radius: 6.8

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 6.3 AU - 9 AU

Year: 13453 Days

Day: 23.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 66,308,735 km

• M1: 84,972 km (0.083 R)
• M2: 910,303 km (0.065 R)
• M3: 1,406,370 km (0.078 R)
• M4: 1,650,065 km (0.078 R)
• M5: 2,096,913 km (0.076 R)
• M6: 2,573,233 km (0.118 R)
• M7: 5,514,477 km (0.112 R)
• M8: 5,731,992 km (0.079 R)
• M9: 6,660,247 km (0.093 R)
• M10: 6,907,233 km (0.113 R)
• M11: 9,568,280 km (0.042 R)
• M12: 12,608,857 km (0.112 R)
• M13: 14,629,475 km (0.095 R)
• M14: 15,798,283 km (0.05 R)
• M15: 17,142,869 km (0.108 R)
• M16: 18,320,204 km (0.027 R)
• M17: 18,622,691 km (0.096 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 554.1

Radius: 3.7

Gravity: 40.47 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 7.04 AU - 11.6 AU

Year: 18091 Days

Day: 16 Hours

Environment

Temp: -223 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 66,308,735 km

• M1: 46,525 km (0.061 R)
• M2: 302,487 km (0.041 R)
• M3: 452,085 km (0.111 R)
• M4: 895,044 km (0.1 R)
• M5: 1,081,443 km (0.052 R)
• M6: 2,237,685 km (0.082 R)
• M7: 2,362,898 km (0.104 R)
• M8: 2,862,705 km (0.086 R)
• M9: 4,646,360 km (0.115 R)
• M10: 4,816,303 km (0.115 R)
• M11: 6,794,735 km (0.046 R)
• M12: 7,192,516 km (0.09 R)
• M13: 7,374,128 km (0.035 R)
• M14: 10,772,543 km (0.095 R)
• M15: 11,070,542 km (0.076 R)
• M16: 11,870,890 km (0.092 R)
• M17: 12,382,066 km (0.074 R)
• M18: 12,709,087 km (0.107 R)
• M19: 14,938,993 km (0.116 R)
• M20: 15,991,564 km (0.052 R)
• M21: 19,009,850 km (0.09 R)
• M22: 19,444,731 km (0.049 R)
• M23: 21,719,367 km (0.072 R)
• M24: 22,579,854 km (0.104 R)
• M25: 29,019,145 km (0.089 R)
• M26: 31,370,374 km (0.096 R)
• M27: 31,733,598 km (0.091 R)
• M28: 33,340,429 km (0.108 R)
• M29: 46,132,094 km (0.083 R)
• M30: 47,710,351 km (0.113 R)
• M31: 52,319,911 km (0.088 R)
• M32: 53,516,993 km (0.089 R)
• M33: 59,406,960 km (0.046 R)
• M34: 60,148,965 km (0.119 R)
• M35: 65,123,095 km (0.089 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 485 - 15,727 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit