🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.5 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.59

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.83 AU - 1.17 AU

Year: 419 Days

Day: 15.3 Hours

Environment

Temp: -39 °C

Axial Tilt: 38.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 85,310,805 km

• M1: 46,226 km (0.095 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.26

Radius: 1.1

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 1.53 AU - 2.03 AU

Year: 995 Days

Day: 47.6 Hours

Environment

Temp: -106 °C

Axial Tilt: 22.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.95 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.03

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 2.43 AU - 3.47 AU

Year: 2123 Days

Day: 32.4 Hours

Environment

Temp: -141 °C

Axial Tilt: 4.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 85,310,805 km

• M1: 174,581 km (0.119 R)
• M2: 283,787 km (0.09 R)

Asteroid Belt

Center: 3.48 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 41.7

Radius: 8.5

Gravity: 0.58 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 3.72 AU - 4.28 AU

Year: 3352 Days

Day: 10.4 Hours

Environment

Temp: -154 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 85,310,805 km

• M1: 106,962 km (0.086 R)
• M2: 392,096 km (0.061 R)
• M3: 1,094,009 km (0.097 R)
• M4: 1,634,806 km (0.09 R)
• M5: 4,455,773 km (0.109 R)
• M6: 5,628,321 km (0.043 R)
• M7: 5,925,871 km (0.064 R)
• M8: 6,617,761 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 417.7

Radius: 11.9

Gravity: 2.95 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 4.29 AU - 4.75 AU

Year: 4026 Days

Day: 14.7 Hours

Environment

Temp: -151 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 85,310,805 km

• M1: 147,952 km (0.116 R)
• M2: 562,338 km (0.117 R)
• M3: 1,308,981 km (0.102 R)
• M4: 1,922,781 km (0.042 R)
• M5: 2,347,191 km (0.08 R)
• M6: 3,172,522 km (0.112 R)
• M7: 3,692,075 km (0.088 R)
• M8: 4,139,672 km (0.1 R)
• M9: 4,669,249 km (0.089 R)
• M10: 5,705,214 km (0.088 R)
• M11: 6,193,801 km (0.079 R)
• M12: 7,379,962 km (0.108 R)
• M13: 10,003,759 km (0.091 R)
• M14: 10,395,406 km (0.102 R)
• M15: 11,002,026 km (0.104 R)
• M16: 12,918,524 km (0.084 R)
• M17: 18,491,344 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 432.7

Radius: 10.4

Gravity: 4 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 4.01 AU - 5.55 AU

Year: 4378 Days

Day: 10.1 Hours

Environment

Temp: -154 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 85,310,805 km

• M1: 129,851 km (0.103 R)
• M2: 455,376 km (0.099 R)
• M3: 831,914 km (0.101 R)
• M4: 1,184,516 km (0.077 R)
• M5: 1,802,954 km (0.035 R)
• M6: 2,737,641 km (0.11 R)
• M7: 3,905,402 km (0.106 R)
• M8: 4,338,189 km (0.065 R)
• M9: 5,047,582 km (0.094 R)
• M10: 5,998,725 km (0.092 R)
• M11: 6,517,231 km (0.1 R)
• M12: 7,002,826 km (0.102 R)
• M13: 7,350,791 km (0.068 R)
• M14: 9,266,691 km (0.116 R)
• M15: 10,360,550 km (0.101 R)
• M16: 11,846,356 km (0.084 R)
• M17: 13,615,052 km (0.115 R)
• M18: 14,664,780 km (0.084 R)
• M19: 16,202,048 km (0.104 R)
• M20: 18,019,961 km (0.093 R)
• M21: 18,435,095 km (0.106 R)
• M22: 19,531,947 km (0.101 R)
• M23: 21,258,007 km (0.082 R)
• M24: 22,124,328 km (0.084 R)
• M25: 23,153,113 km (0.115 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 107.9

Radius: 7.1

Gravity: 2.14 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 9.99 AU - 14.49 AU

Year: 17941 Days

Day: 20.8 Hours

Environment

Temp: -206 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 85,310,805 km

• M1: 99,333 km (0.083 R)
• M2: 325,824 km (0.097 R)
• M3: 1,291,628 km (0.079 R)
• M4: 1,709,305 km (0.089 R)
• M5: 1,957,937 km (0.106 R)
• M6: 2,315,775 km (0.1 R)
• M7: 7,224,979 km (0.07 R)
• M8: 7,683,646 km (0.05 R)
• M9: 8,000,045 km (0.046 R)
• M10: 9,353,756 km (0.116 R)
• M11: 12,026,023 km (0.099 R)
• M12: 12,561,135 km (0.109 R)
• M13: 13,280,551 km (0.056 R)
• M14: 15,291,745 km (0.107 R)
• M15: 16,828,115 km (0.105 R)
• M16: 17,429,947 km (0.071 R)
• M17: 19,249,057 km (0.06 R)
• M18: 19,612,730 km (0.104 R)
• M19: 25,460,211 km (0.113 R)
• M20: 26,880,942 km (0.065 R)
• M21: 27,244,166 km (0.116 R)
• M22: 29,879,482 km (0.098 R)
• M23: 35,107,628 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 908.8

Radius: 8

Gravity: 14.2 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 10.47 AU - 15.73 AU

Year: 19865 Days

Day: 19.4 Hours

Environment

Temp: -206 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 85,310,805 km

• M1: 99,483 km (0.086 R)
• M2: 397,182 km (0.114 R)
• M3: 891,603 km (0.102 R)
• M4: 1,337,106 km (0.112 R)
• M5: 1,828,385 km (0.085 R)
• M6: 2,277,328 km (0.088 R)
• M7: 3,006,319 km (0.097 R)
• M8: 3,454,215 km (0.098 R)
• M9: 3,850,200 km (0.07 R)
• M10: 5,184,015 km (0.068 R)
• M11: 6,942,239 km (0.091 R)
• M12: 7,425,141 km (0.105 R)
• M13: 8,675,480 km (0.108 R)
• M14: 9,760,513 km (0.048 R)
• M15: 10,997,837 km (0.083 R)
• M16: 11,322,764 km (0.111 R)
• M17: 15,253,148 km (0.116 R)
• M18: 15,576,130 km (0.092 R)
• M19: 19,721,039 km (0.106 R)
• M20: 21,586,973 km (0.084 R)
• M21: 25,439,866 km (0.069 R)
• M22: 29,229,030 km (0.074 R)
• M23: 33,243,190 km (0.114 R)
• M24: 35,030,585 km (0.1 R)
• M25: 39,096,356 km (0.118 R)
• M26: 43,789,990 km (0.08 R)
• M27: 47,119,589 km (0.12 R)
• M28: 47,977,533 km (0.037 R)
• M29: 52,424,479 km (0.087 R)
• M30: 55,030,923 km (0.081 R)
• M31: 64,622,391 km (0.072 R)
• M32: 82,237,689 km (0.114 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 774.9

Radius: 3.7

Gravity: 56.6 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 11.46 AU - 16.86 AU

Year: 22324 Days

Day: 15.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 85,310,805 km

• M1: 69,413 km (0.038 R)
• M2: 193,280 km (0.064 R)
• M3: 369,656 km (0.082 R)
• M4: 1,030,281 km (0.098 R)
• M5: 1,561,951 km (0.082 R)
• M6: 8,618,932 km (0.107 R)
• M7: 12,812,010 km (0.1 R)
• M8: 13,772,728 km (0.03 R)
• M9: 23,461,883 km (0.113 R)
• M10: 31,081,950 km (0.095 R)
• M11: 32,808,159 km (0.093 R)
• M12: 33,215,514 km (0.064 R)
• M13: 34,597,350 km (0.098 R)
• M14: 43,701,577 km (0.117 R)
• M15: 51,126,269 km (0.117 R)
• M16: 53,525,969 km (0.042 R)
• M17: 56,971,208 km (0.051 R)
• M18: 57,166,732 km (0.119 R)
• M19: 75,247,280 km (0.107 R)
• M20: 79,074,442 km (0.107 R)
• M21: 84,291,668 km (0.053 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 436 - 16,067 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit