🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.98

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.46 AU - 0.72 AU

Year: 297 Days

Day: 19.6 Hours

Environment

Temp: -136 °C

Axial Tilt: 41.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 281.7

Radius: 13.3

Gravity: 1.59 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.84 AU - 0.96 AU

Year: 560 Days

Day: 12.9 Hours

Environment

Temp: -154 °C

Axial Tilt: 92.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 35,829,243 km

• M1: 165,455 km (0.032 R)
• M2: 607,667 km (0.112 R)
• M3: 1,101,190 km (0.079 R)
• M4: 1,685,070 km (0.085 R)
• M5: 2,723,429 km (0.106 R)
• M6: 3,390,486 km (0.114 R)
• M7: 4,269,074 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 872.9

Radius: 12.6

Gravity: 5.5 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.08 AU - 1.2 AU

Year: 798 Days

Day: 11.6 Hours

Environment

Temp: -156 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 35,829,243 km

• M1: 156,779 km (0.087 R)
• M2: 563,086 km (0.114 R)
• M3: 1,116,000 km (0.117 R)
• M4: 1,733,839 km (0.105 R)
• M5: 2,266,258 km (0.09 R)
• M6: 3,739,348 km (0.104 R)
• M7: 5,269,435 km (0.063 R)
• M8: 5,775,226 km (0.086 R)
• M9: 6,907,233 km (0.117 R)
• M10: 7,955,016 km (0.064 R)
• M11: 8,622,372 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 252.7

Radius: 10.7

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 1.15 AU - 1.29 AU

Year: 884 Days

Day: 8 Hours

Environment

Temp: -166 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,829,243 km

• M1: 132,993 km (0.118 R)
• M2: 526,734 km (0.084 R)
• M3: 999,613 km (0.081 R)
• M4: 1,358,797 km (0.066 R)
• M5: 1,961,527 km (0.04 R)
• M6: 2,349,584 km (0.107 R)
• M7: 2,703,234 km (0.114 R)
• M8: 3,104,156 km (0.076 R)
• M9: 3,727,381 km (0.12 R)
• M10: 4,880,331 km (0.117 R)
• M11: 5,375,650 km (0.108 R)
• M12: 6,294,630 km (0.097 R)
• M13: 6,662,640 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 758.3

Radius: 11

Gravity: 6.27 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.42 AU - 2.34 AU

Year: 1691 Days

Day: 14 Hours

Environment

Temp: -194 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 35,829,243 km

• M1: 137,032 km (0.118 R)
• M2: 615,446 km (0.115 R)
• M3: 1,028,186 km (0.116 R)
• M4: 1,373,608 km (0.103 R)
• M5: 1,850,974 km (0.111 R)
• M6: 2,411,966 km (0.11 R)
• M7: 3,191,521 km (0.107 R)
• M8: 3,752,663 km (0.074 R)
• M9: 5,008,836 km (0.099 R)
• M10: 5,469,448 km (0.116 R)
• M11: 5,815,617 km (0.077 R)
• M12: 7,975,362 km (0.083 R)
• M13: 8,604,870 km (0.088 R)
• M14: 9,594,609 km (0.043 R)
• M15: 10,658,399 km (0.056 R)
• M16: 11,054,385 km (0.071 R)
• M17: 12,223,044 km (0.072 R)
• M18: 12,577,441 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 397.7

Radius: 10.3

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 2.14 AU - 2.64 AU

Year: 2424 Days

Day: 14.8 Hours

Environment

Temp: -186 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 35,829,243 km

• M1: 128,205 km (0.107 R)
• M2: 492,476 km (0.081 R)
• M3: 1,063,940 km (0.099 R)
• M4: 1,599,500 km (0.102 R)
• M5: 1,930,860 km (0.075 R)
• M6: 2,569,194 km (0.09 R)
• M7: 2,908,781 km (0.073 R)
• M8: 3,610,245 km (0.116 R)
• M9: 4,188,591 km (0.102 R)
• M10: 4,848,467 km (0.111 R)
• M11: 5,599,448 km (0.117 R)
• M12: 8,412,636 km (0.077 R)
• M13: 9,529,384 km (0.102 R)
• M14: 9,865,830 km (0.116 R)
• M15: 11,292,246 km (0.065 R)
• M16: 13,982,315 km (0.036 R)
• M17: 15,269,155 km (0.073 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 358.4

Radius: 13.8

Gravity: 1.88 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 3.31 AU - 3.77 AU

Year: 4369 Days

Day: 8.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,829,243 km

• M1: 171,589 km (0.07 R)
• M2: 1,046,736 km (0.119 R)
• M3: 1,531,733 km (0.108 R)
• M4: 2,404,786 km (0.108 R)
• M5: 3,081,866 km (0.097 R)
• M6: 3,964,792 km (0.066 R)
• M7: 4,727,143 km (0.116 R)
• M8: 5,355,155 km (0.075 R)
• M9: 10,887,733 km (0.064 R)
• M10: 13,724,408 km (0.085 R)
• M11: 15,468,420 km (0.045 R)
• M12: 17,356,046 km (0.062 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 884.6

Radius: 8.6

Gravity: 11.96 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 3.39 AU - 5.05 AU

Year: 5687 Days

Day: 6.9 Hours

Environment

Temp: -202 °C

Axial Tilt: 49.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 35,829,243 km

• M1: 107,860 km (0.105 R)
• M2: 727,644 km (0.099 R)
• M3: 1,548,488 km (0.1 R)
• M4: 1,931,159 km (0.093 R)
• M5: 4,572,309 km (0.081 R)
• M6: 5,485,604 km (0.075 R)
• M7: 6,346,839 km (0.038 R)
• M8: 7,369,191 km (0.098 R)
• M9: 8,056,743 km (0.073 R)
• M10: 8,620,577 km (0.049 R)
• M11: 9,917,142 km (0.087 R)
• M12: 10,330,331 km (0.086 R)
• M13: 11,944,343 km (0.116 R)
• M14: 12,838,340 km (0.064 R)
• M15: 13,164,313 km (0.108 R)
• M16: 14,348,979 km (0.066 R)
• M17: 18,328,282 km (0.111 R)
• M18: 20,532,457 km (0.093 R)
• M19: 23,227,014 km (0.057 R)
• M20: 23,549,098 km (0.074 R)
• M21: 23,874,324 km (0.099 R)
• M22: 30,734,284 km (0.11 R)
• M23: 33,728,486 km (0.057 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 543 - 16,195 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit