🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.16

Radius: 1.06

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.47 AU - 0.67 AU

Year: 282 Days

Day: 22.4 Hours

Environment

Temp: -131 °C

Axial Tilt: 16.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 619.1

Radius: 12.8

Gravity: 3.78 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.74 AU - 0.84 AU

Year: 461 Days

Day: 14.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 39,547,887 km

• M1: 159,172 km (0.033 R)
• M2: 588,518 km (0.108 R)
• M3: 1,012,329 km (0.093 R)
• M4: 1,411,157 km (0.094 R)
• M5: 1,825,543 km (0.096 R)
• M6: 2,242,322 km (0.055 R)
• M7: 2,753,947 km (0.119 R)
• M8: 3,296,838 km (0.098 R)
• M9: 4,055,299 km (0.086 R)
• M10: 4,791,171 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 73.1

Radius: 8.4

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.77 AU - 1.27 AU

Year: 676 Days

Day: 9.2 Hours

Environment

Temp: -157 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 39,547,887 km

• M1: 104,419 km (0.12 R)
• M2: 374,294 km (0.062 R)
• M3: 669,301 km (0.064 R)
• M4: 957,576 km (0.036 R)
• M5: 2,186,373 km (0.076 R)
• M6: 3,524,825 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 472.7

Radius: 9.6

Gravity: 5.13 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.89 AU - 1.39 AU

Year: 798 Days

Day: 13 Hours

Environment

Temp: -172 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 39,547,887 km

• M1: 119,379 km (0.057 R)
• M2: 756,068 km (0.068 R)
• M3: 1,589,926 km (0.095 R)
• M4: 2,044,255 km (0.062 R)
• M5: 2,363,497 km (0.086 R)
• M6: 2,806,755 km (0.074 R)
• M7: 3,153,224 km (0.047 R)
• M8: 3,461,545 km (0.03 R)
• M9: 3,846,760 km (0.065 R)
• M10: 4,431,239 km (0.113 R)
• M11: 4,769,779 km (0.082 R)
• M12: 5,230,390 km (0.111 R)
• M13: 5,553,971 km (0.114 R)
• M14: 6,064,249 km (0.11 R)
• M15: 6,401,442 km (0.093 R)
• M16: 6,709,315 km (0.116 R)
• M17: 7,332,839 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 961.7

Radius: 8

Gravity: 15.03 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 1.05 AU - 1.43 AU

Year: 906 Days

Day: 5.1 Hours

Environment

Temp: -162 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 39,547,887 km

• M1: 99,483 km (0.045 R)
• M2: 397,930 km (0.108 R)
• M3: 735,722 km (0.045 R)
• M4: 1,038,359 km (0.03 R)
• M5: 1,361,341 km (0.086 R)
• M6: 1,903,483 km (0.063 R)
• M7: 2,203,128 km (0.099 R)
• M8: 2,498,284 km (0.108 R)
• M9: 2,781,473 km (0.096 R)
• M10: 3,311,050 km (0.083 R)
• M11: 3,577,334 km (0.108 R)
• M12: 3,857,830 km (0.057 R)
• M13: 4,393,241 km (0.096 R)
• M14: 5,072,864 km (0.084 R)
• M15: 5,347,675 km (0.083 R)
• M16: 5,778,667 km (0.066 R)
• M17: 6,570,937 km (0.11 R)
• M18: 7,089,742 km (0.097 R)
• M19: 8,049,712 km (0.032 R)
• M20: 8,838,691 km (0.107 R)
• M21: 9,529,983 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 998.1

Radius: 14

Gravity: 5.09 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 3.48 AU - 3.8 AU

Year: 4556 Days

Day: 5.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 39,547,887 km

• M1: 174,132 km (0.111 R)
• M2: 622,028 km (0.119 R)
• M3: 1,091,017 km (0.091 R)
• M4: 1,557,912 km (0.069 R)
• M5: 2,086,890 km (0.12 R)
• M6: 2,683,038 km (0.114 R)
• M7: 3,433,271 km (0.104 R)
• M8: 4,494,219 km (0.118 R)
• M9: 5,074,210 km (0.094 R)
• M10: 5,976,285 km (0.089 R)
• M11: 6,417,599 km (0.086 R)
• M12: 8,251,968 km (0.026 R)
• M13: 11,009,506 km (0.104 R)
• M14: 11,724,135 km (0.087 R)
• M15: 12,622,470 km (0.077 R)
• M16: 13,088,617 km (0.119 R)
• M17: 15,185,081 km (0.106 R)
• M18: 15,653,472 km (0.06 R)
• M19: 16,742,994 km (0.115 R)
• M20: 19,005,362 km (0.116 R)
• M21: 20,812,953 km (0.045 R)
• M22: 21,832,612 km (0.074 R)
• M23: 22,581,200 km (0.05 R)
• M24: 23,735,946 km (0.106 R)
• M25: 24,687,837 km (0.044 R)
• M26: 26,583,242 km (0.069 R)
• M27: 27,783,466 km (0.115 R)
• M28: 28,485,379 km (0.074 R)
• M29: 29,289,169 km (0.079 R)
• M30: 30,199,921 km (0.083 R)
• M31: 31,411,962 km (0.059 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 614.6

Radius: 11

Gravity: 5.08 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 4.33 AU - 5.43 AU

Year: 7072 Days

Day: 12 Hours

Environment

Temp: -212 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 39,547,887 km

• M1: 136,882 km (0.044 R)
• M2: 505,192 km (0.1 R)
• M3: 1,664,276 km (0.116 R)
• M4: 2,034,082 km (0.12 R)
• M5: 3,166,987 km (0.092 R)
• M6: 5,427,112 km (0.054 R)
• M7: 6,626,288 km (0.06 R)
• M8: 7,569,353 km (0.088 R)
• M9: 8,073,348 km (0.095 R)
• M10: 9,062,489 km (0.112 R)
• M11: 10,270,043 km (0.085 R)
• M12: 10,791,542 km (0.094 R)
• M13: 11,281,026 km (0.066 R)
• M14: 13,896,745 km (0.064 R)
• M15: 14,594,319 km (0.106 R)
• M16: 17,889,811 km (0.107 R)
• M17: 18,996,237 km (0.114 R)
• M18: 24,797,343 km (0.09 R)
• M19: 31,383,389 km (0.03 R)
• M20: 32,482,634 km (0.06 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 662.2

Radius: 11

Gravity: 5.47 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 4.24 AU - 6.02 AU

Year: 7622 Days

Day: 13.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 39,547,887 km

• M1: 137,032 km (0.118 R)
• M2: 974,481 km (0.104 R)
• M3: 1,428,211 km (0.037 R)
• M4: 1,900,043 km (0.096 R)
• M5: 2,892,924 km (0.042 R)
• M6: 4,150,743 km (0.102 R)
• M7: 4,550,019 km (0.06 R)
• M8: 5,182,369 km (0.116 R)
• M9: 6,516,633 km (0.114 R)
• M10: 7,058,028 km (0.083 R)
• M11: 7,435,463 km (0.117 R)
• M12: 13,887,918 km (0.065 R)
• M13: 17,369,061 km (0.077 R)
• M14: 19,201,335 km (0.107 R)
• M15: 21,003,990 km (0.111 R)
• M16: 21,866,870 km (0.114 R)
• M17: 23,915,464 km (0.074 R)
• M18: 25,204,399 km (0.092 R)
• M19: 29,059,386 km (0.118 R)
• M20: 31,430,064 km (0.044 R)
• M21: 39,311,927 km (0.095 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 429 - 15,687 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit