🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.45 AU - 0.57 AU

Year: 232 Days

Day: 33 Hours

Environment

Temp: -119 °C

Axial Tilt: 4.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 68,481,870 km

• M1: 49,966 km (0.11 R)
• M2: 121,773 km (0.051 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.22

Radius: 1.38

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.55 AU - 0.55 AU

Year: 259 Days

Day: 33.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 42.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.48 AU - 0.64 AU

Year: 266 Days

Day: 12.3 Hours

Environment

Temp: -123 °C

Axial Tilt: 15.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 68,481,870 km

• M1: 29,620 km (0.038 R)
• M2: 218,114 km (0.059 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.5

Radius: 12.2

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.74 AU - 1.12 AU

Year: 570 Days

Day: 7.2 Hours

Environment

Temp: -149 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 68,481,870 km

• M1: 151,692 km (0.051 R)
• M2: 585,526 km (0.091 R)
• M3: 1,190,949 km (0.084 R)
• M4: 1,881,193 km (0.082 R)
• M5: 2,382,795 km (0.098 R)
• M6: 2,793,441 km (0.098 R)
• M7: 3,205,882 km (0.088 R)
• M8: 3,646,747 km (0.081 R)
• M9: 4,505,738 km (0.1 R)
• M10: 5,014,521 km (0.116 R)
• M11: 5,798,114 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 488.4

Radius: 11.2

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.98 AU - 1.58 AU

Year: 921 Days

Day: 10.6 Hours

Environment

Temp: -170 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 68,481,870 km

• M1: 140,772 km (0.118 R)
• M2: 526,884 km (0.071 R)
• M3: 881,281 km (0.03 R)
• M4: 1,747,303 km (0.062 R)
• M5: 2,423,486 km (0.11 R)
• M6: 3,764,182 km (0.116 R)
• M7: 5,681,129 km (0.097 R)
• M8: 7,321,619 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 52.7

Radius: 10

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.17 AU - 1.75 AU

Year: 1122 Days

Day: 8.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 68,481,870 km

• M1: 124,316 km (0.051 R)
• M2: 522,994 km (0.08 R)
• M3: 926,609 km (0.029 R)
• M4: 1,701,227 km (0.069 R)
• M5: 2,025,854 km (0.085 R)
• M6: 2,392,220 km (0.113 R)
• M7: 3,707,933 km (0.085 R)
• M8: 4,209,235 km (0.062 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 734.6

Radius: 12.8

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 3.09 AU - 4.03 AU

Year: 4271 Days

Day: 11.6 Hours

Environment

Temp: -206 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 68,481,870 km

• M1: 159,322 km (0.037 R)
• M2: 668,254 km (0.099 R)
• M3: 1,153,400 km (0.078 R)
• M4: 1,890,169 km (0.055 R)
• M5: 3,453,916 km (0.093 R)
• M6: 4,026,726 km (0.102 R)
• M7: 4,443,206 km (0.118 R)
• M8: 5,446,110 km (0.095 R)
• M9: 5,986,757 km (0.05 R)
• M10: 7,411,527 km (0.091 R)
• M11: 8,040,736 km (0.051 R)
• M12: 9,729,846 km (0.111 R)
• M13: 10,399,296 km (0.094 R)
• M14: 11,369,737 km (0.027 R)
• M15: 12,399,719 km (0.067 R)
• M16: 13,136,937 km (0.105 R)
• M17: 15,750,262 km (0.107 R)
• M18: 16,732,821 km (0.084 R)
• M19: 17,450,741 km (0.091 R)
• M20: 21,913,246 km (0.086 R)
• M21: 24,330,897 km (0.105 R)
• M22: 26,517,569 km (0.107 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.9

Radius: 15

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 3.68 AU - 4.6 AU

Year: 5356 Days

Day: 9.6 Hours

Environment

Temp: -208 °C

Axial Tilt: 126.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 68,481,870 km

• M1: 186,698 km (0.032 R)
• M2: 1,361,939 km (0.119 R)
• M3: 2,697,549 km (0.105 R)
• M4: 3,198,402 km (0.035 R)
• M5: 3,971,973 km (0.07 R)
• M6: 5,034,417 km (0.086 R)
• M7: 5,648,217 km (0.117 R)
• M8: 7,386,395 km (0.083 R)
• M9: 9,633,205 km (0.094 R)
• M10: 10,536,627 km (0.042 R)
• M11: 11,744,480 km (0.094 R)
• M12: 15,078,418 km (0.097 R)
• M13: 21,156,280 km (0.096 R)
• M14: 22,917,646 km (0.117 R)
• M15: 26,297,510 km (0.062 R)
• M16: 34,132,250 km (0.111 R)

Planet 9 - Gas Giant

Semi-Major Axis: 6.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 963.1

Radius: 9.8

Gravity: 10.03 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 5.34 AU - 6.8 AU

Year: 9509 Days

Day: 7.6 Hours

Environment

Temp: -222 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 68,481,870 km

• M1: 121,922 km (0.087 R)
• M2: 500,106 km (0.058 R)
• M3: 2,305,004 km (0.077 R)
• M4: 2,745,869 km (0.064 R)
• M5: 3,218,449 km (0.115 R)
• M6: 4,240,501 km (0.107 R)
• M7: 5,230,241 km (0.055 R)
• M8: 6,105,089 km (0.091 R)
• M9: 10,761,024 km (0.1 R)
• M10: 14,947,221 km (0.098 R)
• M11: 17,738,268 km (0.108 R)
• M12: 18,273,679 km (0.103 R)
• M13: 19,056,974 km (0.088 R)
• M14: 24,516,249 km (0.048 R)
• M15: 30,388,863 km (0.068 R)
• M16: 31,488,108 km (0.036 R)
• M17: 35,063,946 km (0.099 R)
• M18: 37,885,960 km (0.098 R)
• M19: 39,158,739 km (0.118 R)
• M20: 43,148,215 km (0.105 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 671.1

Radius: 7

Gravity: 13.7 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 7 AU - 11.06 AU

Year: 17253 Days

Day: 16.9 Hours

Environment

Temp: -233 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 68,481,870 km

• M1: 87,664 km (0.073 R)
• M2: 356,791 km (0.084 R)
• M3: 1,044,343 km (0.057 R)
• M4: 1,359,845 km (0.098 R)
• M5: 1,789,939 km (0.065 R)
• M6: 2,124,589 km (0.096 R)
• M7: 4,302,285 km (0.073 R)
• M8: 5,154,245 km (0.083 R)
• M9: 5,487,100 km (0.099 R)
• M10: 7,603,761 km (0.117 R)
• M11: 9,593,412 km (0.06 R)
• M12: 14,421,534 km (0.081 R)
• M13: 15,841,517 km (0.1 R)
• M14: 22,849,728 km (0.099 R)
• M15: 25,615,344 km (0.102 R)
• M16: 31,555,427 km (0.089 R)
• M17: 38,631,705 km (0.085 R)
• M18: 47,979,029 km (0.085 R)
• M19: 52,653,663 km (0.048 R)
• M20: 53,171,870 km (0.043 R)
• M21: 54,042,979 km (0.076 R)
• M22: 58,542,135 km (0.11 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: 164 - 14,303 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit