🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.59

Radius: 0.81

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.58 AU - 0.72 AU

Year: 333 Days

Day: 37.5 Hours

Environment

Temp: -136 °C

Axial Tilt: 8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504.1

Radius: 9.9

Gravity: 5.14 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.94 AU - 1.02 AU

Year: 617 Days

Day: 11.6 Hours

Environment

Temp: -166 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 28,641,045 km

• M1: 123,119 km (0.088 R)
• M2: 487,091 km (0.049 R)
• M3: 912,996 km (0.108 R)
• M4: 1,269,338 km (0.071 R)
• M5: 1,789,490 km (0.103 R)
• M6: 2,181,287 km (0.109 R)
• M7: 2,609,136 km (0.113 R)
• M8: 2,966,376 km (0.066 R)
• M9: 3,443,294 km (0.057 R)
• M10: 3,766,874 km (0.059 R)
• M11: 4,460,859 km (0.116 R)
• M12: 4,894,244 km (0.075 R)
• M13: 5,220,966 km (0.115 R)
• M14: 5,792,130 km (0.107 R)
• M15: 6,251,994 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 337

Radius: 12.4

Gravity: 2.19 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 2.28 AU - 2.54 AU

Year: 2379 Days

Day: 14.3 Hours

Environment

Temp: -192 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 28,641,045 km

• M1: 154,385 km (0.099 R)
• M2: 566,078 km (0.104 R)
• M3: 961,765 km (0.1 R)
• M4: 1,446,611 km (0.055 R)
• M5: 2,072,080 km (0.11 R)
• M6: 2,480,931 km (0.113 R)
• M7: 3,002,280 km (0.086 R)
• M8: 3,731,120 km (0.095 R)
• M9: 4,119,626 km (0.087 R)
• M10: 5,021,103 km (0.112 R)
• M11: 5,907,919 km (0.113 R)
• M12: 7,160,352 km (0.049 R)
• M13: 7,568,605 km (0.116 R)
• M14: 8,342,924 km (0.116 R)
• M15: 8,857,092 km (0.114 R)
• M16: 9,586,381 km (0.043 R)
• M17: 10,184,623 km (0.043 R)
• M18: 11,940,603 km (0.083 R)
• M19: 13,272,173 km (0.094 R)
• M20: 13,932,050 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 495.6

Radius: 15

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 2.55 AU - 2.81 AU

Year: 2790 Days

Day: 11 Hours

Environment

Temp: -197 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 28,641,045 km

• M1: 187,596 km (0.091 R)
• M2: 728,242 km (0.114 R)
• M3: 1,200,224 km (0.098 R)
• M4: 1,899,444 km (0.105 R)
• M5: 3,698,059 km (0.108 R)
• M6: 4,626,165 km (0.107 R)
• M7: 5,438,331 km (0.104 R)
• M8: 6,504,366 km (0.062 R)
• M9: 8,043,728 km (0.109 R)
• M10: 9,708,154 km (0.109 R)
• M11: 10,286,499 km (0.114 R)
• M12: 10,773,291 km (0.09 R)
• M13: 11,632,431 km (0.091 R)
• M14: 13,935,191 km (0.109 R)
• M15: 14,813,480 km (0.092 R)
• M16: 16,680,761 km (0.097 R)
• M17: 18,045,842 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 394.1

Radius: 11.6

Gravity: 2.93 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 2.07 AU - 3.45 AU

Year: 2915 Days

Day: 12.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 46.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 28,641,045 km

• M1: 144,212 km (0.095 R)
• M2: 542,442 km (0.114 R)
• M3: 1,441,375 km (0.089 R)
• M4: 3,213,512 km (0.118 R)
• M5: 3,678,312 km (0.113 R)
• M6: 4,327,567 km (0.069 R)
• M7: 4,787,281 km (0.101 R)
• M8: 6,687,025 km (0.119 R)
• M9: 7,131,630 km (0.107 R)
• M10: 7,655,521 km (0.12 R)
• M11: 8,049,712 km (0.105 R)
• M12: 8,682,660 km (0.084 R)
• M13: 9,870,168 km (0.075 R)
• M14: 10,933,660 km (0.052 R)
• M15: 11,356,423 km (0.028 R)
• M16: 13,287,582 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 636.3

Radius: 14.7

Gravity: 2.94 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 4.72 AU - 5.56 AU

Year: 7409 Days

Day: 12.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 28,641,045 km

• M1: 182,809 km (0.117 R)
• M2: 729,738 km (0.111 R)
• M3: 1,264,102 km (0.072 R)
• M4: 2,005,808 km (0.087 R)
• M5: 2,809,598 km (0.073 R)
• M6: 4,666,706 km (0.061 R)
• M7: 5,388,665 km (0.113 R)
• M8: 6,593,227 km (0.105 R)
• M9: 7,657,466 km (0.114 R)
• M10: 8,130,345 km (0.111 R)
• M11: 8,961,810 km (0.082 R)
• M12: 9,532,227 km (0.106 R)
• M13: 10,362,196 km (0.099 R)
• M14: 13,199,319 km (0.108 R)
• M15: 14,348,979 km (0.086 R)
• M16: 17,650,155 km (0.101 R)
• M17: 20,512,262 km (0.108 R)
• M18: 22,530,935 km (0.101 R)
• M19: 29,188,041 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 43.3

Radius: 13.9

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 4.36 AU - 5.92 AU

Year: 7409 Days

Day: 7.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 28,641,045 km

• M1: 173,683 km (0.083 R)
• M2: 1,007,990 km (0.109 R)
• M3: 1,697,487 km (0.045 R)
• M4: 3,647,944 km (0.056 R)
• M5: 5,800,807 km (0.09 R)
• M6: 6,489,256 km (0.099 R)
• M7: 7,094,978 km (0.106 R)
• M8: 7,767,121 km (0.089 R)
• M9: 8,208,585 km (0.11 R)
• M10: 9,369,763 km (0.068 R)
• M11: 10,007,350 km (0.099 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 90.3

Radius: 4.8

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 5.96 AU - 8.78 AU

Year: 12721 Days

Day: 15.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 28,641,045 km

• M1: 59,690 km (0.089 R)
• M2: 313,258 km (0.07 R)
• M3: 480,060 km (0.05 R)
• M4: 862,731 km (0.09 R)
• M5: 6,141,142 km (0.081 R)
• M6: 6,388,876 km (0.08 R)
• M7: 8,967,495 km (0.057 R)
• M8: 10,203,024 km (0.088 R)
• M9: 12,262,687 km (0.098 R)
• M10: 17,612,157 km (0.119 R)
• M11: 19,870,936 km (0.111 R)
• M12: 22,534,077 km (0.086 R)
• M13: 27,624,444 km (0.066 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 279 - 10,596 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit