🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.28

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.44 AU - 0.68 AU

Year: 271 Days

Day: 28.2 Hours

Environment

Temp: -133 °C

Axial Tilt: 5.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 140.2

Radius: 9.3

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.94 AU - 0.98 AU

Year: 607 Days

Day: 13.4 Hours

Environment

Temp: -164 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 58,162,035 km

• M1: 115,789 km (0.103 R)
• M2: 432,637 km (0.1 R)
• M3: 726,896 km (0.111 R)
• M4: 1,271,731 km (0.039 R)
• M5: 1,886,728 km (0.095 R)
• M6: 2,562,761 km (0.065 R)
• M7: 3,933,826 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 330

Radius: 10.4

Gravity: 3.05 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 1.25 AU - 1.51 AU

Year: 1047 Days

Day: 11.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 58,162,035 km

• M1: 129,402 km (0.088 R)
• M2: 545,583 km (0.084 R)
• M3: 1,049,429 km (0.114 R)
• M4: 1,401,732 km (0.071 R)
• M5: 1,912,908 km (0.084 R)
• M6: 3,247,471 km (0.063 R)
• M7: 3,609,497 km (0.064 R)
• M8: 5,521,209 km (0.047 R)
• M9: 6,759,580 km (0.071 R)
• M10: 8,077,537 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 81.5

Radius: 12.8

Gravity: 0.5 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 1.53 AU - 2.25 AU

Year: 1678 Days

Day: 7.9 Hours

Environment

Temp: -194 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 58,162,035 km

• M1: 159,172 km (0.054 R)
• M2: 588,069 km (0.072 R)
• M3: 1,492,239 km (0.114 R)
• M4: 1,895,854 km (0.081 R)
• M5: 2,809,298 km (0.089 R)
• M6: 3,616,379 km (0.083 R)
• M7: 4,541,941 km (0.073 R)
• M8: 5,708,954 km (0.053 R)
• M9: 6,718,590 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 663.8

Radius: 8.7

Gravity: 8.77 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 2.76 AU - 3.86 AU

Year: 3888 Days

Day: 13.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 58,162,035 km

• M1: 108,159 km (0.115 R)
• M2: 410,347 km (0.104 R)
• M3: 690,693 km (0.08 R)
• M4: 1,253,032 km (0.115 R)
• M5: 3,645,999 km (0.093 R)
• M6: 4,271,468 km (0.117 R)
• M7: 5,302,048 km (0.111 R)
• M8: 5,679,932 km (0.095 R)
• M9: 6,642,295 km (0.092 R)
• M10: 7,081,963 km (0.096 R)
• M11: 7,641,758 km (0.088 R)
• M12: 9,266,541 km (0.112 R)
• M13: 9,538,510 km (0.114 R)
• M14: 10,596,017 km (0.087 R)
• M15: 12,279,442 km (0.078 R)
• M16: 16,562,579 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 555.5

Radius: 11.7

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 3.82 AU - 5 AU

Year: 5980 Days

Day: 13 Hours

Environment

Temp: -215 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 58,162,035 km

• M1: 146,905 km (0.047 R)
• M2: 604,226 km (0.116 R)
• M3: 1,190,051 km (0.05 R)
• M4: 1,656,048 km (0.104 R)
• M5: 2,518,779 km (0.057 R)
• M6: 3,239,542 km (0.095 R)
• M7: 4,069,361 km (0.11 R)
• M8: 5,573,568 km (0.109 R)
• M9: 8,079,781 km (0.108 R)
• M10: 8,462,901 km (0.048 R)
• M11: 8,979,313 km (0.119 R)
• M12: 10,565,050 km (0.085 R)
• M13: 11,544,318 km (0.105 R)
• M14: 21,013,115 km (0.053 R)
• M15: 21,447,248 km (0.087 R)
• M16: 22,938,141 km (0.1 R)
• M17: 24,417,364 km (0.11 R)
• M18: 26,042,147 km (0.115 R)
• M19: 29,416,028 km (0.086 R)
• M20: 30,602,488 km (0.116 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 514.9

Radius: 7.4

Gravity: 9.4 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 5.35 AU - 8.45 AU

Year: 11703 Days

Day: 22.2 Hours

Environment

Temp: -232 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 58,162,035 km

• M1: 154,535 km (0.041 R)
• M2: 450,290 km (0.113 R)
• M3: 768,185 km (0.078 R)
• M4: 1,152,502 km (0.099 R)
• M5: 1,587,533 km (0.067 R)
• M6: 2,058,467 km (0.103 R)
• M7: 2,345,844 km (0.064 R)
• M8: 4,642,321 km (0.098 R)
• M9: 7,122,205 km (0.095 R)
• M10: 9,862,688 km (0.071 R)
• M11: 12,814,853 km (0.071 R)
• M12: 13,917,090 km (0.069 R)
• M13: 15,014,839 km (0.057 R)
• M14: 22,404,525 km (0.098 R)
• M15: 22,928,118 km (0.092 R)
• M16: 24,456,110 km (0.084 R)
• M17: 27,217,238 km (0.114 R)
• M18: 30,391,256 km (0.054 R)
• M19: 32,012,149 km (0.109 R)
• M20: 33,349,704 km (0.11 R)
• M21: 38,573,362 km (0.039 R)
• M22: 40,729,516 km (0.107 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 175.7

Radius: 5.1

Gravity: 6.76 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 5.47 AU - 8.55 AU

Year: 11984 Days

Day: 22.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 58,162,035 km

• M1: 64,776 km (0.092 R)
• M2: 244,144 km (0.109 R)
• M3: 423,661 km (0.06 R)
• M4: 1,295,966 km (0.043 R)
• M5: 1,717,533 km (0.091 R)
• M6: 2,258,479 km (0.072 R)
• M7: 3,315,388 km (0.039 R)
• M8: 4,402,217 km (0.084 R)
• M9: 4,693,633 km (0.087 R)
• M10: 5,315,362 km (0.086 R)
• M11: 7,848,203 km (0.079 R)
• M12: 8,803,685 km (0.105 R)
• M13: 10,471,253 km (0.083 R)
• M14: 10,799,919 km (0.115 R)
• M15: 11,232,556 km (0.075 R)
• M16: 12,390,593 km (0.052 R)
• M17: 17,361,282 km (0.071 R)
• M18: 22,882,341 km (0.075 R)
• M19: 23,435,703 km (0.063 R)
• M20: 25,149,197 km (0.075 R)
• M21: 27,032,036 km (0.098 R)
• M22: 27,472,602 km (0.109 R)
• M23: 29,283,334 km (0.062 R)
• M24: 31,171,858 km (0.101 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 783.2

Radius: 8

Gravity: 12.24 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 6.39 AU - 8.03 AU

Year: 12500 Days

Day: 16.6 Hours

Environment

Temp: -227 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 58,162,035 km

• M1: 99,632 km (0.092 R)
• M2: 455,376 km (0.099 R)
• M3: 743,352 km (0.118 R)
• M4: 1,429,557 km (0.088 R)
• M5: 2,653,417 km (0.119 R)
• M6: 3,899,717 km (0.112 R)
• M7: 4,370,502 km (0.119 R)
• M8: 4,878,835 km (0.12 R)
• M9: 5,641,186 km (0.089 R)
• M10: 8,030,264 km (0.1 R)
• M11: 9,040,648 km (0.064 R)
• M12: 14,071,774 km (0.08 R)
• M13: 15,320,168 km (0.102 R)
• M14: 18,275,773 km (0.078 R)
• M15: 18,680,286 km (0.107 R)
• M16: 21,861,634 km (0.092 R)
• M17: 28,186,483 km (0.114 R)
• M18: 30,501,360 km (0.054 R)
• M19: 34,883,381 km (0.119 R)
• M20: 37,288,765 km (0.103 R)
• M21: 39,802,458 km (0.072 R)
• M22: 54,081,126 km (0.091 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 327 - 19,690 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit